./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.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 883ae562acbdc0ddaf57b9acda91c94407da87efc745325e9971c16b2e3730c3 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 01:23:16,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 01:23:16,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 01:23:16,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 01:23:16,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 01:23:16,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 01:23:16,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 01:23:16,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 01:23:16,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 01:23:16,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 01:23:16,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 01:23:16,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 01:23:16,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 01:23:16,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 01:23:16,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 01:23:16,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 01:23:16,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 01:23:16,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 01:23:16,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 01:23:16,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 01:23:16,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 01:23:16,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 01:23:16,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 01:23:16,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 01:23:16,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 01:23:16,281 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 01:23:16,281 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 01:23:16,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 01:23:16,283 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 01:23:16,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 01:23:16,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 01:23:16,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 01:23:16,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 01:23:16,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 01:23:16,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 01:23:16,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 01:23:16,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 01:23:16,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 01:23:16,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 01:23:16,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 01:23:16,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 01:23:16,290 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 01:23:16,315 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 01:23:16,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 01:23:16,317 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 01:23:16,317 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 01:23:16,317 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 01:23:16,318 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 01:23:16,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 01:23:16,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 01:23:16,319 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 01:23:16,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 01:23:16,320 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 01:23:16,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 01:23:16,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 01:23:16,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 01:23:16,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 01:23:16,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 01:23:16,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 01:23:16,321 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 01:23:16,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 01:23:16,321 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 01:23:16,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 01:23:16,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 01:23:16,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 01:23:16,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 01:23:16,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:23:16,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 01:23:16,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 01:23:16,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 01:23:16,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 01:23:16,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 01:23:16,323 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 01:23:16,323 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 01:23:16,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 01:23:16,324 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 883ae562acbdc0ddaf57b9acda91c94407da87efc745325e9971c16b2e3730c3 [2021-12-28 01:23:16,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 01:23:16,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 01:23:16,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 01:23:16,616 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 01:23:16,616 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 01:23:16,617 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2021-12-28 01:23:16,667 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7bff2392/5eb4c4c554c84b778cbf0463705aba01/FLAGe10639545 [2021-12-28 01:23:17,052 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 01:23:17,055 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2021-12-28 01:23:17,067 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7bff2392/5eb4c4c554c84b778cbf0463705aba01/FLAGe10639545 [2021-12-28 01:23:17,446 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7bff2392/5eb4c4c554c84b778cbf0463705aba01 [2021-12-28 01:23:17,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 01:23:17,451 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 01:23:17,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 01:23:17,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 01:23:17,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 01:23:17,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:23:17" (1/1) ... [2021-12-28 01:23:17,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1adfeb8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:23:17, skipping insertion in model container [2021-12-28 01:23:17,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:23:17" (1/1) ... [2021-12-28 01:23:17,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 01:23:17,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 01:23:17,734 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7165,7178] [2021-12-28 01:23:17,777 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:23:17,788 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 01:23:17,834 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7165,7178] [2021-12-28 01:23:17,859 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:23:17,879 INFO L208 MainTranslator]: Completed translation [2021-12-28 01:23:17,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:23:17 WrapperNode [2021-12-28 01:23:17,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 01:23:17,881 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 01:23:17,881 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 01:23:17,881 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 01:23:17,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:23:17" (1/1) ... [2021-12-28 01:23:17,905 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:23:17" (1/1) ... [2021-12-28 01:23:17,940 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 556 [2021-12-28 01:23:17,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 01:23:17,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 01:23:17,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 01:23:17,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 01:23:17,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:23:17" (1/1) ... [2021-12-28 01:23:17,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:23:17" (1/1) ... [2021-12-28 01:23:17,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:23:17" (1/1) ... [2021-12-28 01:23:17,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:23:17" (1/1) ... [2021-12-28 01:23:17,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:23:17" (1/1) ... [2021-12-28 01:23:17,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:23:17" (1/1) ... [2021-12-28 01:23:17,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:23:17" (1/1) ... [2021-12-28 01:23:17,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 01:23:17,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 01:23:17,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 01:23:17,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 01:23:17,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:23:17" (1/1) ... [2021-12-28 01:23:17,999 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:23:18,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:23:18,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 01:23:18,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 01:23:18,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 01:23:18,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 01:23:18,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 01:23:18,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 01:23:18,211 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 01:23:18,213 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 01:23:18,631 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 01:23:18,637 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 01:23:18,638 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 01:23:18,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:23:18 BoogieIcfgContainer [2021-12-28 01:23:18,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 01:23:18,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 01:23:18,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 01:23:18,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 01:23:18,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 01:23:17" (1/3) ... [2021-12-28 01:23:18,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cdb8212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:23:18, skipping insertion in model container [2021-12-28 01:23:18,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:23:17" (2/3) ... [2021-12-28 01:23:18,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cdb8212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:23:18, skipping insertion in model container [2021-12-28 01:23:18,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:23:18" (3/3) ... [2021-12-28 01:23:18,645 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2021-12-28 01:23:18,650 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 01:23:18,651 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 01:23:18,687 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 01:23:18,692 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 01:23:18,692 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 01:23:18,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 145 states have (on average 1.710344827586207) internal successors, (248), 146 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:18,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-28 01:23:18,713 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:18,714 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] [2021-12-28 01:23:18,715 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:23:18,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:18,724 INFO L85 PathProgramCache]: Analyzing trace with hash -235222256, now seen corresponding path program 1 times [2021-12-28 01:23:18,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:18,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120548626] [2021-12-28 01:23:18,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:18,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:19,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:19,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:19,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120548626] [2021-12-28 01:23:19,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120548626] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:19,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:19,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 01:23:19,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457490760] [2021-12-28 01:23:19,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:19,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:23:19,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:19,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:23:19,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:23:19,072 INFO L87 Difference]: Start difference. First operand has 147 states, 145 states have (on average 1.710344827586207) internal successors, (248), 146 states have internal predecessors, (248), 0 states have call successors, (0), 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 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:19,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:19,236 INFO L93 Difference]: Finished difference Result 467 states and 755 transitions. [2021-12-28 01:23:19,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 01:23:19,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-12-28 01:23:19,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:19,251 INFO L225 Difference]: With dead ends: 467 [2021-12-28 01:23:19,255 INFO L226 Difference]: Without dead ends: 393 [2021-12-28 01:23:19,258 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 [2021-12-28 01:23:19,260 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 824 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 01:23:19,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 865 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 01:23:19,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-12-28 01:23:19,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 231. [2021-12-28 01:23:19,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.508695652173913) internal successors, (347), 230 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:19,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 347 transitions. [2021-12-28 01:23:19,310 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 347 transitions. Word has length 48 [2021-12-28 01:23:19,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:19,310 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 347 transitions. [2021-12-28 01:23:19,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:19,311 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 347 transitions. [2021-12-28 01:23:19,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-28 01:23:19,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:19,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:23:19,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 01:23:19,313 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:23:19,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:19,313 INFO L85 PathProgramCache]: Analyzing trace with hash 407331856, now seen corresponding path program 1 times [2021-12-28 01:23:19,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:19,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573829523] [2021-12-28 01:23:19,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:19,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:19,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:19,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:19,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573829523] [2021-12-28 01:23:19,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573829523] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:19,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:19,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:23:19,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405541759] [2021-12-28 01:23:19,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:19,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:23:19,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:19,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:23:19,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:23:19,383 INFO L87 Difference]: Start difference. First operand 231 states and 347 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:19,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:19,428 INFO L93 Difference]: Finished difference Result 569 states and 875 transitions. [2021-12-28 01:23:19,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:23:19,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-12-28 01:23:19,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:19,431 INFO L225 Difference]: With dead ends: 569 [2021-12-28 01:23:19,434 INFO L226 Difference]: Without dead ends: 401 [2021-12-28 01:23:19,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:23:19,436 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 143 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 392 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 [2021-12-28 01:23:19,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 392 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:23:19,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-12-28 01:23:19,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 399. [2021-12-28 01:23:19,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 1.5125628140703518) internal successors, (602), 398 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:19,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 602 transitions. [2021-12-28 01:23:19,481 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 602 transitions. Word has length 51 [2021-12-28 01:23:19,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:19,481 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 602 transitions. [2021-12-28 01:23:19,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:19,482 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 602 transitions. [2021-12-28 01:23:19,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-28 01:23:19,483 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:19,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:23:19,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 01:23:19,484 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:23:19,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:19,484 INFO L85 PathProgramCache]: Analyzing trace with hash 738781713, now seen corresponding path program 1 times [2021-12-28 01:23:19,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:19,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375689356] [2021-12-28 01:23:19,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:19,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:19,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:19,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:19,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375689356] [2021-12-28 01:23:19,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375689356] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:19,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:19,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:23:19,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8012806] [2021-12-28 01:23:19,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:19,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:23:19,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:19,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:23:19,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:23:19,558 INFO L87 Difference]: Start difference. First operand 399 states and 602 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:19,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:19,603 INFO L93 Difference]: Finished difference Result 979 states and 1498 transitions. [2021-12-28 01:23:19,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:23:19,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-12-28 01:23:19,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:19,609 INFO L225 Difference]: With dead ends: 979 [2021-12-28 01:23:19,610 INFO L226 Difference]: Without dead ends: 691 [2021-12-28 01:23:19,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:23:19,617 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 130 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 392 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 [2021-12-28 01:23:19,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 392 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:23:19,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2021-12-28 01:23:19,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 689. [2021-12-28 01:23:19,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 688 states have (on average 1.502906976744186) internal successors, (1034), 688 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:19,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1034 transitions. [2021-12-28 01:23:19,676 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1034 transitions. Word has length 51 [2021-12-28 01:23:19,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:19,677 INFO L470 AbstractCegarLoop]: Abstraction has 689 states and 1034 transitions. [2021-12-28 01:23:19,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:19,677 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1034 transitions. [2021-12-28 01:23:19,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-28 01:23:19,683 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:19,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:23:19,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 01:23:19,684 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:23:19,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:19,685 INFO L85 PathProgramCache]: Analyzing trace with hash -865520847, now seen corresponding path program 1 times [2021-12-28 01:23:19,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:19,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638348195] [2021-12-28 01:23:19,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:19,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:19,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:19,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:19,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638348195] [2021-12-28 01:23:19,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638348195] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:19,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:19,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:23:19,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972460401] [2021-12-28 01:23:19,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:19,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:23:19,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:19,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:23:19,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:23:19,752 INFO L87 Difference]: Start difference. First operand 689 states and 1034 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:19,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:19,839 INFO L93 Difference]: Finished difference Result 1811 states and 2729 transitions. [2021-12-28 01:23:19,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:23:19,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-12-28 01:23:19,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:19,843 INFO L225 Difference]: With dead ends: 1811 [2021-12-28 01:23:19,843 INFO L226 Difference]: Without dead ends: 1209 [2021-12-28 01:23:19,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:23:19,852 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 139 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 400 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 [2021-12-28 01:23:19,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 400 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:23:19,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2021-12-28 01:23:19,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1207. [2021-12-28 01:23:19,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 1206 states have (on average 1.466832504145937) internal successors, (1769), 1206 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:19,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1769 transitions. [2021-12-28 01:23:19,899 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1769 transitions. Word has length 51 [2021-12-28 01:23:19,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:19,900 INFO L470 AbstractCegarLoop]: Abstraction has 1207 states and 1769 transitions. [2021-12-28 01:23:19,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:19,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1769 transitions. [2021-12-28 01:23:19,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-28 01:23:19,901 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:19,901 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] [2021-12-28 01:23:19,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 01:23:19,901 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:23:19,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:19,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1376619607, now seen corresponding path program 1 times [2021-12-28 01:23:19,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:19,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143145754] [2021-12-28 01:23:19,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:19,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:19,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:19,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:19,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143145754] [2021-12-28 01:23:19,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143145754] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:19,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:19,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 01:23:19,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192292616] [2021-12-28 01:23:19,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:19,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:23:20,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:20,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:23:20,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:23:20,001 INFO L87 Difference]: Start difference. First operand 1207 states and 1769 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 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) [2021-12-28 01:23:20,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:20,140 INFO L93 Difference]: Finished difference Result 2347 states and 3506 transitions. [2021-12-28 01:23:20,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 01:23:20,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 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 [2021-12-28 01:23:20,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:20,148 INFO L225 Difference]: With dead ends: 2347 [2021-12-28 01:23:20,148 INFO L226 Difference]: Without dead ends: 2001 [2021-12-28 01:23:20,149 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 [2021-12-28 01:23:20,150 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 563 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:23:20,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [563 Valid, 894 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:23:20,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2001 states. [2021-12-28 01:23:20,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2001 to 1611. [2021-12-28 01:23:20,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1611 states, 1610 states have (on average 1.4745341614906833) internal successors, (2374), 1610 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:20,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 2374 transitions. [2021-12-28 01:23:20,224 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 2374 transitions. Word has length 52 [2021-12-28 01:23:20,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:20,224 INFO L470 AbstractCegarLoop]: Abstraction has 1611 states and 2374 transitions. [2021-12-28 01:23:20,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 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) [2021-12-28 01:23:20,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 2374 transitions. [2021-12-28 01:23:20,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-28 01:23:20,225 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:20,226 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] [2021-12-28 01:23:20,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 01:23:20,226 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:23:20,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:20,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1542318405, now seen corresponding path program 1 times [2021-12-28 01:23:20,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:20,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301170336] [2021-12-28 01:23:20,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:20,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:20,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:20,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:20,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301170336] [2021-12-28 01:23:20,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301170336] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:20,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:20,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 01:23:20,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939746386] [2021-12-28 01:23:20,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:20,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:23:20,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:20,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:23:20,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:23:20,268 INFO L87 Difference]: Start difference. First operand 1611 states and 2374 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 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) [2021-12-28 01:23:20,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:20,411 INFO L93 Difference]: Finished difference Result 2721 states and 4066 transitions. [2021-12-28 01:23:20,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 01:23:20,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 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 [2021-12-28 01:23:20,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:20,419 INFO L225 Difference]: With dead ends: 2721 [2021-12-28 01:23:20,420 INFO L226 Difference]: Without dead ends: 2375 [2021-12-28 01:23:20,421 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 [2021-12-28 01:23:20,421 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 567 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:23:20,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 928 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:23:20,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2021-12-28 01:23:20,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 1921. [2021-12-28 01:23:20,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1921 states, 1920 states have (on average 1.4802083333333333) internal successors, (2842), 1920 states have internal predecessors, (2842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:20,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 2842 transitions. [2021-12-28 01:23:20,508 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 2842 transitions. Word has length 52 [2021-12-28 01:23:20,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:20,509 INFO L470 AbstractCegarLoop]: Abstraction has 1921 states and 2842 transitions. [2021-12-28 01:23:20,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 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) [2021-12-28 01:23:20,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 2842 transitions. [2021-12-28 01:23:20,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-28 01:23:20,510 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:20,511 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] [2021-12-28 01:23:20,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 01:23:20,511 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:23:20,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:20,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1268142435, now seen corresponding path program 1 times [2021-12-28 01:23:20,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:20,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210209381] [2021-12-28 01:23:20,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:20,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:20,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:20,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:20,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210209381] [2021-12-28 01:23:20,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210209381] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:20,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:20,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 01:23:20,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19477752] [2021-12-28 01:23:20,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:20,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:23:20,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:20,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:23:20,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:23:20,563 INFO L87 Difference]: Start difference. First operand 1921 states and 2842 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) [2021-12-28 01:23:20,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:20,747 INFO L93 Difference]: Finished difference Result 3135 states and 4687 transitions. [2021-12-28 01:23:20,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 01:23:20,748 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 [2021-12-28 01:23:20,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:20,757 INFO L225 Difference]: With dead ends: 3135 [2021-12-28 01:23:20,757 INFO L226 Difference]: Without dead ends: 2789 [2021-12-28 01:23:20,759 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 [2021-12-28 01:23:20,759 INFO L933 BasicCegarLoop]: 395 mSDtfsCounter, 571 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:23:20,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [571 Valid, 1003 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:23:20,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2021-12-28 01:23:20,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2216. [2021-12-28 01:23:20,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 2215 states have (on average 1.4853273137697518) internal successors, (3290), 2215 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:20,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 3290 transitions. [2021-12-28 01:23:20,885 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 3290 transitions. Word has length 53 [2021-12-28 01:23:20,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:20,886 INFO L470 AbstractCegarLoop]: Abstraction has 2216 states and 3290 transitions. [2021-12-28 01:23:20,886 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) [2021-12-28 01:23:20,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 3290 transitions. [2021-12-28 01:23:20,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-28 01:23:20,887 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:20,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:23:20,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 01:23:20,888 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:23:20,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:20,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1868949312, now seen corresponding path program 1 times [2021-12-28 01:23:20,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:20,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981575479] [2021-12-28 01:23:20,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:20,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:20,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:20,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:20,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981575479] [2021-12-28 01:23:20,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981575479] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:20,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:20,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 01:23:20,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71283113] [2021-12-28 01:23:20,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:20,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:23:20,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:20,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:23:20,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:23:20,943 INFO L87 Difference]: Start difference. First operand 2216 states and 3290 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:21,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:21,195 INFO L93 Difference]: Finished difference Result 5194 states and 7716 transitions. [2021-12-28 01:23:21,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 01:23:21,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-12-28 01:23:21,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:21,203 INFO L225 Difference]: With dead ends: 5194 [2021-12-28 01:23:21,203 INFO L226 Difference]: Without dead ends: 3055 [2021-12-28 01:23:21,204 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 [2021-12-28 01:23:21,205 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 770 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 01:23:21,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [770 Valid, 213 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 01:23:21,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3055 states. [2021-12-28 01:23:21,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3055 to 3037. [2021-12-28 01:23:21,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3037 states, 3036 states have (on average 1.4720026350461133) internal successors, (4469), 3036 states have internal predecessors, (4469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:21,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 4469 transitions. [2021-12-28 01:23:21,364 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 4469 transitions. Word has length 56 [2021-12-28 01:23:21,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:21,364 INFO L470 AbstractCegarLoop]: Abstraction has 3037 states and 4469 transitions. [2021-12-28 01:23:21,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:21,365 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 4469 transitions. [2021-12-28 01:23:21,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-28 01:23:21,366 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:21,366 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] [2021-12-28 01:23:21,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 01:23:21,367 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:23:21,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:21,367 INFO L85 PathProgramCache]: Analyzing trace with hash -281542782, now seen corresponding path program 1 times [2021-12-28 01:23:21,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:21,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225632824] [2021-12-28 01:23:21,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:21,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:21,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:21,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:21,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225632824] [2021-12-28 01:23:21,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225632824] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:21,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:21,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 01:23:21,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098223609] [2021-12-28 01:23:21,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:21,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:23:21,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:21,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:23:21,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:23:21,402 INFO L87 Difference]: Start difference. First operand 3037 states and 4469 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) [2021-12-28 01:23:21,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:21,779 INFO L93 Difference]: Finished difference Result 7096 states and 10425 transitions. [2021-12-28 01:23:21,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 01:23:21,779 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 [2021-12-28 01:23:21,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:21,791 INFO L225 Difference]: With dead ends: 7096 [2021-12-28 01:23:21,791 INFO L226 Difference]: Without dead ends: 4145 [2021-12-28 01:23:21,794 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 [2021-12-28 01:23:21,795 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 800 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 01:23:21,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [800 Valid, 201 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 01:23:21,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4145 states. [2021-12-28 01:23:21,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4145 to 3037. [2021-12-28 01:23:21,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3037 states, 3036 states have (on average 1.4555335968379446) internal successors, (4419), 3036 states have internal predecessors, (4419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:21,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 4419 transitions. [2021-12-28 01:23:21,975 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 4419 transitions. Word has length 57 [2021-12-28 01:23:21,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:21,975 INFO L470 AbstractCegarLoop]: Abstraction has 3037 states and 4419 transitions. [2021-12-28 01:23:21,975 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) [2021-12-28 01:23:21,975 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 4419 transitions. [2021-12-28 01:23:21,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-28 01:23:21,977 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:21,977 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] [2021-12-28 01:23:21,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 01:23:21,977 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:23:21,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:21,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1520651092, now seen corresponding path program 1 times [2021-12-28 01:23:21,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:21,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274136808] [2021-12-28 01:23:21,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:21,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:22,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:22,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:22,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274136808] [2021-12-28 01:23:22,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274136808] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:22,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:22,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 01:23:22,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856359365] [2021-12-28 01:23:22,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:22,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:23:22,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:22,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:23:22,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:23:22,015 INFO L87 Difference]: Start difference. First operand 3037 states and 4419 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) [2021-12-28 01:23:22,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:22,376 INFO L93 Difference]: Finished difference Result 7242 states and 10532 transitions. [2021-12-28 01:23:22,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 01:23:22,377 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 [2021-12-28 01:23:22,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:22,387 INFO L225 Difference]: With dead ends: 7242 [2021-12-28 01:23:22,388 INFO L226 Difference]: Without dead ends: 4246 [2021-12-28 01:23:22,391 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 [2021-12-28 01:23:22,392 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 779 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 01:23:22,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [779 Valid, 211 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 01:23:22,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4246 states. [2021-12-28 01:23:22,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4246 to 4221. [2021-12-28 01:23:22,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4221 states, 4220 states have (on average 1.4417061611374407) internal successors, (6084), 4220 states have internal predecessors, (6084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:22,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4221 states to 4221 states and 6084 transitions. [2021-12-28 01:23:22,682 INFO L78 Accepts]: Start accepts. Automaton has 4221 states and 6084 transitions. Word has length 57 [2021-12-28 01:23:22,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:22,682 INFO L470 AbstractCegarLoop]: Abstraction has 4221 states and 6084 transitions. [2021-12-28 01:23:22,682 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) [2021-12-28 01:23:22,682 INFO L276 IsEmpty]: Start isEmpty. Operand 4221 states and 6084 transitions. [2021-12-28 01:23:22,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-28 01:23:22,684 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:22,684 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] [2021-12-28 01:23:22,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 01:23:22,685 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:23:22,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:22,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1438328999, now seen corresponding path program 1 times [2021-12-28 01:23:22,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:22,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990858254] [2021-12-28 01:23:22,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:22,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:22,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:22,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:22,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990858254] [2021-12-28 01:23:22,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990858254] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:22,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:22,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 01:23:22,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840580048] [2021-12-28 01:23:22,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:22,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:23:22,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:22,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:23:22,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:23:22,735 INFO L87 Difference]: Start difference. First operand 4221 states and 6084 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 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) [2021-12-28 01:23:24,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:24,122 INFO L93 Difference]: Finished difference Result 17865 states and 25675 transitions. [2021-12-28 01:23:24,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 01:23:24,123 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 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 [2021-12-28 01:23:24,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:24,171 INFO L225 Difference]: With dead ends: 17865 [2021-12-28 01:23:24,171 INFO L226 Difference]: Without dead ends: 16495 [2021-12-28 01:23:24,181 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 [2021-12-28 01:23:24,182 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 2505 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2505 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 01:23:24,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2505 Valid, 391 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 01:23:24,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16495 states. [2021-12-28 01:23:24,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16495 to 4233. [2021-12-28 01:23:24,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4233 states, 4232 states have (on average 1.4413988657844992) internal successors, (6100), 4232 states have internal predecessors, (6100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:24,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4233 states to 4233 states and 6100 transitions. [2021-12-28 01:23:24,644 INFO L78 Accepts]: Start accepts. Automaton has 4233 states and 6100 transitions. Word has length 58 [2021-12-28 01:23:24,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:24,644 INFO L470 AbstractCegarLoop]: Abstraction has 4233 states and 6100 transitions. [2021-12-28 01:23:24,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 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) [2021-12-28 01:23:24,645 INFO L276 IsEmpty]: Start isEmpty. Operand 4233 states and 6100 transitions. [2021-12-28 01:23:24,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-28 01:23:24,650 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:24,650 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] [2021-12-28 01:23:24,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 01:23:24,651 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:23:24,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:24,651 INFO L85 PathProgramCache]: Analyzing trace with hash -497478917, now seen corresponding path program 1 times [2021-12-28 01:23:24,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:24,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179710443] [2021-12-28 01:23:24,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:24,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:24,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:24,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:24,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179710443] [2021-12-28 01:23:24,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179710443] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:24,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:24,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 01:23:24,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396093306] [2021-12-28 01:23:24,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:24,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:23:24,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:24,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:23:24,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:23:24,719 INFO L87 Difference]: Start difference. First operand 4233 states and 6100 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) [2021-12-28 01:23:26,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:26,481 INFO L93 Difference]: Finished difference Result 16288 states and 23327 transitions. [2021-12-28 01:23:26,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 01:23:26,482 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 [2021-12-28 01:23:26,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:26,507 INFO L225 Difference]: With dead ends: 16288 [2021-12-28 01:23:26,507 INFO L226 Difference]: Without dead ends: 14074 [2021-12-28 01:23:26,512 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 [2021-12-28 01:23:26,513 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 1867 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1867 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 01:23:26,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1867 Valid, 333 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 01:23:26,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14074 states. [2021-12-28 01:23:26,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14074 to 4253. [2021-12-28 01:23:27,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4253 states, 4252 states have (on average 1.440263405456256) internal successors, (6124), 4252 states have internal predecessors, (6124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:27,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4253 states to 4253 states and 6124 transitions. [2021-12-28 01:23:27,011 INFO L78 Accepts]: Start accepts. Automaton has 4253 states and 6124 transitions. Word has length 59 [2021-12-28 01:23:27,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:27,011 INFO L470 AbstractCegarLoop]: Abstraction has 4253 states and 6124 transitions. [2021-12-28 01:23:27,011 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) [2021-12-28 01:23:27,012 INFO L276 IsEmpty]: Start isEmpty. Operand 4253 states and 6124 transitions. [2021-12-28 01:23:27,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-28 01:23:27,013 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:27,013 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] [2021-12-28 01:23:27,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-28 01:23:27,014 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:23:27,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:27,014 INFO L85 PathProgramCache]: Analyzing trace with hash -2094347044, now seen corresponding path program 1 times [2021-12-28 01:23:27,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:27,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507076620] [2021-12-28 01:23:27,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:27,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:27,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:27,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:27,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507076620] [2021-12-28 01:23:27,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507076620] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:27,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:27,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 01:23:27,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067358087] [2021-12-28 01:23:27,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:27,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:23:27,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:27,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:23:27,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:23:27,068 INFO L87 Difference]: Start difference. First operand 4253 states and 6124 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) [2021-12-28 01:23:29,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:29,354 INFO L93 Difference]: Finished difference Result 19117 states and 27394 transitions. [2021-12-28 01:23:29,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 01:23:29,354 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 [2021-12-28 01:23:29,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:29,385 INFO L225 Difference]: With dead ends: 19117 [2021-12-28 01:23:29,385 INFO L226 Difference]: Without dead ends: 17075 [2021-12-28 01:23:29,392 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 [2021-12-28 01:23:29,393 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 2105 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2105 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 01:23:29,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2105 Valid, 373 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 01:23:29,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17075 states. [2021-12-28 01:23:29,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17075 to 4331. [2021-12-28 01:23:29,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4331 states, 4330 states have (on average 1.4374133949191685) internal successors, (6224), 4330 states have internal predecessors, (6224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:29,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4331 states to 4331 states and 6224 transitions. [2021-12-28 01:23:29,993 INFO L78 Accepts]: Start accepts. Automaton has 4331 states and 6224 transitions. Word has length 59 [2021-12-28 01:23:29,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:29,993 INFO L470 AbstractCegarLoop]: Abstraction has 4331 states and 6224 transitions. [2021-12-28 01:23:29,994 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) [2021-12-28 01:23:29,994 INFO L276 IsEmpty]: Start isEmpty. Operand 4331 states and 6224 transitions. [2021-12-28 01:23:29,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-28 01:23:29,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:29,998 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] [2021-12-28 01:23:29,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-28 01:23:29,999 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:23:29,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:29,999 INFO L85 PathProgramCache]: Analyzing trace with hash 740296785, now seen corresponding path program 1 times [2021-12-28 01:23:29,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:30,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330205685] [2021-12-28 01:23:30,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:30,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:30,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:30,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:30,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330205685] [2021-12-28 01:23:30,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330205685] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:30,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:30,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 01:23:30,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799824336] [2021-12-28 01:23:30,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:30,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 01:23:30,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:30,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 01:23:30,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 01:23:30,178 INFO L87 Difference]: Start difference. First operand 4331 states and 6224 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) [2021-12-28 01:23:32,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:32,475 INFO L93 Difference]: Finished difference Result 14786 states and 21200 transitions. [2021-12-28 01:23:32,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-28 01:23:32,476 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 [2021-12-28 01:23:32,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:32,491 INFO L225 Difference]: With dead ends: 14786 [2021-12-28 01:23:32,491 INFO L226 Difference]: Without dead ends: 11209 [2021-12-28 01:23:32,498 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 [2021-12-28 01:23:32,498 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 2075 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2075 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:23:32,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2075 Valid, 1116 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 01:23:32,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11209 states. [2021-12-28 01:23:33,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11209 to 4331. [2021-12-28 01:23:33,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4331 states, 4330 states have (on average 1.4360277136258661) internal successors, (6218), 4330 states have internal predecessors, (6218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:33,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4331 states to 4331 states and 6218 transitions. [2021-12-28 01:23:33,219 INFO L78 Accepts]: Start accepts. Automaton has 4331 states and 6218 transitions. Word has length 61 [2021-12-28 01:23:33,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:33,219 INFO L470 AbstractCegarLoop]: Abstraction has 4331 states and 6218 transitions. [2021-12-28 01:23:33,219 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) [2021-12-28 01:23:33,219 INFO L276 IsEmpty]: Start isEmpty. Operand 4331 states and 6218 transitions. [2021-12-28 01:23:33,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-28 01:23:33,223 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:33,223 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] [2021-12-28 01:23:33,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-28 01:23:33,224 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:23:33,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:33,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1120228239, now seen corresponding path program 1 times [2021-12-28 01:23:33,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:33,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143053536] [2021-12-28 01:23:33,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:33,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:33,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:33,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:33,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143053536] [2021-12-28 01:23:33,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143053536] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:33,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:33,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 01:23:33,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419287086] [2021-12-28 01:23:33,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:33,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 01:23:33,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:33,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 01:23:33,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 01:23:33,351 INFO L87 Difference]: Start difference. First operand 4331 states and 6218 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) [2021-12-28 01:23:35,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:35,930 INFO L93 Difference]: Finished difference Result 14337 states and 20585 transitions. [2021-12-28 01:23:35,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-28 01:23:35,930 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 [2021-12-28 01:23:35,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:35,944 INFO L225 Difference]: With dead ends: 14337 [2021-12-28 01:23:35,945 INFO L226 Difference]: Without dead ends: 10893 [2021-12-28 01:23:35,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=218, Invalid=594, Unknown=0, NotChecked=0, Total=812 [2021-12-28 01:23:35,951 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 2160 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2160 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:23:35,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2160 Valid, 1095 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 01:23:35,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10893 states. [2021-12-28 01:23:36,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10893 to 4249. [2021-12-28 01:23:36,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4249 states, 4248 states have (on average 1.4324387947269304) internal successors, (6085), 4248 states have internal predecessors, (6085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:36,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4249 states to 4249 states and 6085 transitions. [2021-12-28 01:23:36,661 INFO L78 Accepts]: Start accepts. Automaton has 4249 states and 6085 transitions. Word has length 61 [2021-12-28 01:23:36,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:36,662 INFO L470 AbstractCegarLoop]: Abstraction has 4249 states and 6085 transitions. [2021-12-28 01:23:36,662 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) [2021-12-28 01:23:36,662 INFO L276 IsEmpty]: Start isEmpty. Operand 4249 states and 6085 transitions. [2021-12-28 01:23:36,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-28 01:23:36,664 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:36,664 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] [2021-12-28 01:23:36,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-28 01:23:36,665 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:23:36,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:36,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1451678096, now seen corresponding path program 1 times [2021-12-28 01:23:36,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:36,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700762249] [2021-12-28 01:23:36,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:36,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:36,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:36,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:36,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700762249] [2021-12-28 01:23:36,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700762249] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:36,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:36,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 01:23:36,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930643643] [2021-12-28 01:23:36,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:36,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 01:23:36,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:36,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 01:23:36,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 01:23:36,809 INFO L87 Difference]: Start difference. First operand 4249 states and 6085 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) [2021-12-28 01:23:39,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:39,507 INFO L93 Difference]: Finished difference Result 14864 states and 21312 transitions. [2021-12-28 01:23:39,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-28 01:23:39,508 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 [2021-12-28 01:23:39,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:39,522 INFO L225 Difference]: With dead ends: 14864 [2021-12-28 01:23:39,522 INFO L226 Difference]: Without dead ends: 11292 [2021-12-28 01:23:39,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2021-12-28 01:23:39,529 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 1570 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1570 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 01:23:39,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1570 Valid, 1587 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 01:23:39,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11292 states. [2021-12-28 01:23:40,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11292 to 4074. [2021-12-28 01:23:40,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4074 states, 4073 states have (on average 1.4286766511171127) internal successors, (5819), 4073 states have internal predecessors, (5819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:40,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4074 states to 4074 states and 5819 transitions. [2021-12-28 01:23:40,273 INFO L78 Accepts]: Start accepts. Automaton has 4074 states and 5819 transitions. Word has length 61 [2021-12-28 01:23:40,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:40,274 INFO L470 AbstractCegarLoop]: Abstraction has 4074 states and 5819 transitions. [2021-12-28 01:23:40,274 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) [2021-12-28 01:23:40,274 INFO L276 IsEmpty]: Start isEmpty. Operand 4074 states and 5819 transitions. [2021-12-28 01:23:40,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-28 01:23:40,275 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:40,275 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] [2021-12-28 01:23:40,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-28 01:23:40,276 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:23:40,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:40,276 INFO L85 PathProgramCache]: Analyzing trace with hash 218587336, now seen corresponding path program 1 times [2021-12-28 01:23:40,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:40,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29247557] [2021-12-28 01:23:40,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:40,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:40,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:40,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:40,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29247557] [2021-12-28 01:23:40,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29247557] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:40,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:40,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:23:40,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665343672] [2021-12-28 01:23:40,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:40,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:23:40,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:40,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:23:40,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:23:40,300 INFO L87 Difference]: Start difference. First operand 4074 states and 5819 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) [2021-12-28 01:23:41,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:41,054 INFO L93 Difference]: Finished difference Result 6080 states and 8710 transitions. [2021-12-28 01:23:41,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:23:41,054 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 [2021-12-28 01:23:41,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:41,058 INFO L225 Difference]: With dead ends: 6080 [2021-12-28 01:23:41,059 INFO L226 Difference]: Without dead ends: 3967 [2021-12-28 01:23:41,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:23:41,061 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 132 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 476 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 [2021-12-28 01:23:41,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 476 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:23:41,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3967 states. [2021-12-28 01:23:41,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3967 to 3965. [2021-12-28 01:23:41,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3965 states, 3964 states have (on average 1.4129667003027244) internal successors, (5601), 3964 states have internal predecessors, (5601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:41,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3965 states to 3965 states and 5601 transitions. [2021-12-28 01:23:41,828 INFO L78 Accepts]: Start accepts. Automaton has 3965 states and 5601 transitions. Word has length 62 [2021-12-28 01:23:41,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:41,829 INFO L470 AbstractCegarLoop]: Abstraction has 3965 states and 5601 transitions. [2021-12-28 01:23:41,829 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) [2021-12-28 01:23:41,829 INFO L276 IsEmpty]: Start isEmpty. Operand 3965 states and 5601 transitions. [2021-12-28 01:23:41,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-28 01:23:41,830 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:41,831 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] [2021-12-28 01:23:41,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-28 01:23:41,831 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:23:41,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:41,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1004137309, now seen corresponding path program 1 times [2021-12-28 01:23:41,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:41,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487823455] [2021-12-28 01:23:41,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:41,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:41,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:41,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:41,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487823455] [2021-12-28 01:23:41,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487823455] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:41,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:41,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:23:41,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741503460] [2021-12-28 01:23:41,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:41,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:23:41,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:41,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:23:41,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:23:41,855 INFO L87 Difference]: Start difference. First operand 3965 states and 5601 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) [2021-12-28 01:23:42,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:42,453 INFO L93 Difference]: Finished difference Result 5467 states and 7722 transitions. [2021-12-28 01:23:42,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:23:42,454 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 [2021-12-28 01:23:42,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:42,458 INFO L225 Difference]: With dead ends: 5467 [2021-12-28 01:23:42,458 INFO L226 Difference]: Without dead ends: 3372 [2021-12-28 01:23:42,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:23:42,460 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 120 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 465 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 [2021-12-28 01:23:42,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 465 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:23:42,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3372 states. [2021-12-28 01:23:43,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3372 to 3370. [2021-12-28 01:23:43,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3370 states, 3369 states have (on average 1.3864648263579697) internal successors, (4671), 3369 states have internal predecessors, (4671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:43,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3370 states to 3370 states and 4671 transitions. [2021-12-28 01:23:43,022 INFO L78 Accepts]: Start accepts. Automaton has 3370 states and 4671 transitions. Word has length 62 [2021-12-28 01:23:43,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:43,022 INFO L470 AbstractCegarLoop]: Abstraction has 3370 states and 4671 transitions. [2021-12-28 01:23:43,022 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) [2021-12-28 01:23:43,023 INFO L276 IsEmpty]: Start isEmpty. Operand 3370 states and 4671 transitions. [2021-12-28 01:23:43,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-28 01:23:43,025 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:43,025 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] [2021-12-28 01:23:43,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-28 01:23:43,025 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:23:43,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:43,026 INFO L85 PathProgramCache]: Analyzing trace with hash -17959571, now seen corresponding path program 1 times [2021-12-28 01:23:43,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:43,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479744009] [2021-12-28 01:23:43,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:43,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:43,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:43,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:43,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479744009] [2021-12-28 01:23:43,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479744009] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:43,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:43,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:23:43,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311336287] [2021-12-28 01:23:43,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:43,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:23:43,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:43,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:23:43,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:23:43,049 INFO L87 Difference]: Start difference. First operand 3370 states and 4671 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) [2021-12-28 01:23:43,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:43,526 INFO L93 Difference]: Finished difference Result 4119 states and 5686 transitions. [2021-12-28 01:23:43,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:23:43,527 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 [2021-12-28 01:23:43,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:43,530 INFO L225 Difference]: With dead ends: 4119 [2021-12-28 01:23:43,530 INFO L226 Difference]: Without dead ends: 2782 [2021-12-28 01:23:43,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:23:43,532 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 150 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 481 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 [2021-12-28 01:23:43,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 481 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:23:43,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2021-12-28 01:23:44,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 2780. [2021-12-28 01:23:44,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2780 states, 2779 states have (on average 1.3537243612810363) internal successors, (3762), 2779 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:44,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 3762 transitions. [2021-12-28 01:23:44,024 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 3762 transitions. Word has length 62 [2021-12-28 01:23:44,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:44,024 INFO L470 AbstractCegarLoop]: Abstraction has 2780 states and 3762 transitions. [2021-12-28 01:23:44,024 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) [2021-12-28 01:23:44,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 3762 transitions. [2021-12-28 01:23:44,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-28 01:23:44,029 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:44,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:23:44,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-28 01:23:44,030 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:23:44,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:44,030 INFO L85 PathProgramCache]: Analyzing trace with hash -467159905, now seen corresponding path program 1 times [2021-12-28 01:23:44,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:44,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267329204] [2021-12-28 01:23:44,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:44,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:44,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:44,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:44,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267329204] [2021-12-28 01:23:44,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267329204] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:44,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:44,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-28 01:23:44,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039390490] [2021-12-28 01:23:44,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:44,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-28 01:23:44,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:44,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-28 01:23:44,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-28 01:23:44,307 INFO L87 Difference]: Start difference. First operand 2780 states and 3762 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) [2021-12-28 01:23:47,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:47,276 INFO L93 Difference]: Finished difference Result 8466 states and 11629 transitions. [2021-12-28 01:23:47,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-28 01:23:47,276 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 [2021-12-28 01:23:47,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:47,286 INFO L225 Difference]: With dead ends: 8466 [2021-12-28 01:23:47,286 INFO L226 Difference]: Without dead ends: 8078 [2021-12-28 01:23:47,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=238, Invalid=632, Unknown=0, NotChecked=0, Total=870 [2021-12-28 01:23:47,289 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 3122 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3122 SdHoareTripleChecker+Valid, 2385 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:23:47,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3122 Valid, 2385 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 01:23:47,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8078 states. [2021-12-28 01:23:47,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8078 to 2691. [2021-12-28 01:23:47,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2691 states, 2690 states have (on average 1.3535315985130112) internal successors, (3641), 2690 states have internal predecessors, (3641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:47,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2691 states to 2691 states and 3641 transitions. [2021-12-28 01:23:47,947 INFO L78 Accepts]: Start accepts. Automaton has 2691 states and 3641 transitions. Word has length 63 [2021-12-28 01:23:47,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:47,947 INFO L470 AbstractCegarLoop]: Abstraction has 2691 states and 3641 transitions. [2021-12-28 01:23:47,947 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) [2021-12-28 01:23:47,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2691 states and 3641 transitions. [2021-12-28 01:23:47,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-28 01:23:47,949 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:47,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:23:47,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-28 01:23:47,949 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:23:47,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:47,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1791049563, now seen corresponding path program 1 times [2021-12-28 01:23:47,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:47,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42897875] [2021-12-28 01:23:47,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:47,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:48,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:48,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:48,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42897875] [2021-12-28 01:23:48,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42897875] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:48,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:48,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-28 01:23:48,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066452150] [2021-12-28 01:23:48,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:48,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-28 01:23:48,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:48,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-28 01:23:48,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-28 01:23:48,228 INFO L87 Difference]: Start difference. First operand 2691 states and 3641 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) [2021-12-28 01:23:50,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:50,849 INFO L93 Difference]: Finished difference Result 6769 states and 9275 transitions. [2021-12-28 01:23:50,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-28 01:23:50,850 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 [2021-12-28 01:23:50,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:50,858 INFO L225 Difference]: With dead ends: 6769 [2021-12-28 01:23:50,858 INFO L226 Difference]: Without dead ends: 6405 [2021-12-28 01:23:50,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=178, Invalid=524, Unknown=0, NotChecked=0, Total=702 [2021-12-28 01:23:50,860 INFO L933 BasicCegarLoop]: 432 mSDtfsCounter, 1803 mSDsluCounter, 2662 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1803 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 01:23:50,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1803 Valid, 3094 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 01:23:50,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6405 states. [2021-12-28 01:23:51,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6405 to 2606. [2021-12-28 01:23:51,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2606 states, 2605 states have (on average 1.3531669865642995) internal successors, (3525), 2605 states have internal predecessors, (3525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:51,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2606 states to 2606 states and 3525 transitions. [2021-12-28 01:23:51,555 INFO L78 Accepts]: Start accepts. Automaton has 2606 states and 3525 transitions. Word has length 63 [2021-12-28 01:23:51,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:51,555 INFO L470 AbstractCegarLoop]: Abstraction has 2606 states and 3525 transitions. [2021-12-28 01:23:51,555 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) [2021-12-28 01:23:51,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2606 states and 3525 transitions. [2021-12-28 01:23:51,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-28 01:23:51,556 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:51,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:23:51,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-28 01:23:51,557 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:23:51,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:51,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1695928295, now seen corresponding path program 1 times [2021-12-28 01:23:51,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:51,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806796480] [2021-12-28 01:23:51,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:51,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:51,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:51,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:51,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806796480] [2021-12-28 01:23:51,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806796480] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:51,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:51,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 01:23:51,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074536149] [2021-12-28 01:23:51,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:51,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:23:51,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:51,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:23:51,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:23:51,590 INFO L87 Difference]: Start difference. First operand 2606 states and 3525 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:52,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:52,332 INFO L93 Difference]: Finished difference Result 2612 states and 3528 transitions. [2021-12-28 01:23:52,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 01:23:52,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-28 01:23:52,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:52,336 INFO L225 Difference]: With dead ends: 2612 [2021-12-28 01:23:52,336 INFO L226 Difference]: Without dead ends: 2386 [2021-12-28 01:23:52,337 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 [2021-12-28 01:23:52,337 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 566 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:23:52,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [566 Valid, 628 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:23:52,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2021-12-28 01:23:53,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 2382. [2021-12-28 01:23:53,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 2381 states have (on average 1.3548929021419571) internal successors, (3226), 2381 states have internal predecessors, (3226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:53,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3226 transitions. [2021-12-28 01:23:53,008 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 3226 transitions. Word has length 65 [2021-12-28 01:23:53,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:53,008 INFO L470 AbstractCegarLoop]: Abstraction has 2382 states and 3226 transitions. [2021-12-28 01:23:53,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:53,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 3226 transitions. [2021-12-28 01:23:53,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-28 01:23:53,010 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:53,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:23:53,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-28 01:23:53,010 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:23:53,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:53,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1507814999, now seen corresponding path program 1 times [2021-12-28 01:23:53,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:53,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030819357] [2021-12-28 01:23:53,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:53,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:53,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:53,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:53,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030819357] [2021-12-28 01:23:53,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030819357] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:53,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:53,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:23:53,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542015989] [2021-12-28 01:23:53,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:53,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:23:53,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:53,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:23:53,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:23:53,051 INFO L87 Difference]: Start difference. First operand 2382 states and 3226 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:54,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:54,301 INFO L93 Difference]: Finished difference Result 5821 states and 8010 transitions. [2021-12-28 01:23:54,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:23:54,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-28 01:23:54,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:54,306 INFO L225 Difference]: With dead ends: 5821 [2021-12-28 01:23:54,306 INFO L226 Difference]: Without dead ends: 4024 [2021-12-28 01:23:54,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:23:54,308 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 103 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 413 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 [2021-12-28 01:23:54,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 413 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:23:54,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2021-12-28 01:23:55,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3756. [2021-12-28 01:23:55,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3756 states, 3755 states have (on average 1.363515312916112) internal successors, (5120), 3755 states have internal predecessors, (5120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:55,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3756 states to 3756 states and 5120 transitions. [2021-12-28 01:23:55,448 INFO L78 Accepts]: Start accepts. Automaton has 3756 states and 5120 transitions. Word has length 68 [2021-12-28 01:23:55,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:55,448 INFO L470 AbstractCegarLoop]: Abstraction has 3756 states and 5120 transitions. [2021-12-28 01:23:55,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:55,449 INFO L276 IsEmpty]: Start isEmpty. Operand 3756 states and 5120 transitions. [2021-12-28 01:23:55,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-28 01:23:55,450 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:55,450 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:23:55,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-28 01:23:55,450 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:23:55,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:55,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1724760844, now seen corresponding path program 1 times [2021-12-28 01:23:55,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:55,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661226336] [2021-12-28 01:23:55,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:55,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:55,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:55,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:55,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661226336] [2021-12-28 01:23:55,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661226336] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:55,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:55,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:23:55,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29489513] [2021-12-28 01:23:55,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:55,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:23:55,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:55,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:23:55,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:23:55,478 INFO L87 Difference]: Start difference. First operand 3756 states and 5120 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:57,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:57,536 INFO L93 Difference]: Finished difference Result 9788 states and 13454 transitions. [2021-12-28 01:23:57,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:23:57,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-28 01:23:57,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:57,544 INFO L225 Difference]: With dead ends: 9788 [2021-12-28 01:23:57,544 INFO L226 Difference]: Without dead ends: 6617 [2021-12-28 01:23:57,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:23:57,548 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 92 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 405 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 [2021-12-28 01:23:57,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 405 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:23:57,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6617 states. [2021-12-28 01:23:59,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6617 to 6083. [2021-12-28 01:23:59,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6083 states, 6082 states have (on average 1.3633673133837554) internal successors, (8292), 6082 states have internal predecessors, (8292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:59,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6083 states to 6083 states and 8292 transitions. [2021-12-28 01:23:59,445 INFO L78 Accepts]: Start accepts. Automaton has 6083 states and 8292 transitions. Word has length 69 [2021-12-28 01:23:59,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:59,446 INFO L470 AbstractCegarLoop]: Abstraction has 6083 states and 8292 transitions. [2021-12-28 01:23:59,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:59,446 INFO L276 IsEmpty]: Start isEmpty. Operand 6083 states and 8292 transitions. [2021-12-28 01:23:59,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-28 01:23:59,447 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:59,447 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] [2021-12-28 01:23:59,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-28 01:23:59,448 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:23:59,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:59,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1274692746, now seen corresponding path program 1 times [2021-12-28 01:23:59,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:59,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068538529] [2021-12-28 01:23:59,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:59,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:59,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:59,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:59,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068538529] [2021-12-28 01:23:59,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068538529] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:59,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:59,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 01:23:59,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170983958] [2021-12-28 01:23:59,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:59,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 01:23:59,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:59,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 01:23:59,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 01:23:59,489 INFO L87 Difference]: Start difference. First operand 6083 states and 8292 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:04,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:24:04,044 INFO L93 Difference]: Finished difference Result 12863 states and 17294 transitions. [2021-12-28 01:24:04,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 01:24:04,044 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2021-12-28 01:24:04,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:24:04,058 INFO L225 Difference]: With dead ends: 12863 [2021-12-28 01:24:04,058 INFO L226 Difference]: Without dead ends: 12861 [2021-12-28 01:24:04,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-28 01:24:04,060 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 310 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:24:04,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 999 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:24:04,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12861 states. [2021-12-28 01:24:06,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12861 to 6575. [2021-12-28 01:24:06,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6575 states, 6574 states have (on average 1.3361728019470642) internal successors, (8784), 6574 states have internal predecessors, (8784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:06,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6575 states to 6575 states and 8784 transitions. [2021-12-28 01:24:06,304 INFO L78 Accepts]: Start accepts. Automaton has 6575 states and 8784 transitions. Word has length 72 [2021-12-28 01:24:06,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:24:06,305 INFO L470 AbstractCegarLoop]: Abstraction has 6575 states and 8784 transitions. [2021-12-28 01:24:06,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:06,305 INFO L276 IsEmpty]: Start isEmpty. Operand 6575 states and 8784 transitions. [2021-12-28 01:24:06,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-28 01:24:06,306 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:24:06,307 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] [2021-12-28 01:24:06,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-28 01:24:06,307 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:24:06,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:24:06,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1392355153, now seen corresponding path program 1 times [2021-12-28 01:24:06,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:24:06,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039101374] [2021-12-28 01:24:06,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:24:06,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:24:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:24:06,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:24:06,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:24:06,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039101374] [2021-12-28 01:24:06,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039101374] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:24:06,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:24:06,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:24:06,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016722470] [2021-12-28 01:24:06,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:24:06,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:24:06,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:24:06,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:24:06,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:24:06,330 INFO L87 Difference]: Start difference. First operand 6575 states and 8784 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) [2021-12-28 01:24:10,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:24:10,293 INFO L93 Difference]: Finished difference Result 17171 states and 22931 transitions. [2021-12-28 01:24:10,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:24:10,293 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 [2021-12-28 01:24:10,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:24:10,304 INFO L225 Difference]: With dead ends: 17171 [2021-12-28 01:24:10,305 INFO L226 Difference]: Without dead ends: 11089 [2021-12-28 01:24:10,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:24:10,309 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 122 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:24:10,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 317 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:24:10,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11089 states. [2021-12-28 01:24:14,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11089 to 10923. [2021-12-28 01:24:14,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10923 states, 10922 states have (on average 1.3022340230726972) internal successors, (14223), 10922 states have internal predecessors, (14223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:14,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10923 states to 10923 states and 14223 transitions. [2021-12-28 01:24:14,090 INFO L78 Accepts]: Start accepts. Automaton has 10923 states and 14223 transitions. Word has length 73 [2021-12-28 01:24:14,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:24:14,090 INFO L470 AbstractCegarLoop]: Abstraction has 10923 states and 14223 transitions. [2021-12-28 01:24:14,090 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) [2021-12-28 01:24:14,090 INFO L276 IsEmpty]: Start isEmpty. Operand 10923 states and 14223 transitions. [2021-12-28 01:24:14,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-28 01:24:14,092 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:24:14,092 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] [2021-12-28 01:24:14,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-28 01:24:14,092 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:24:14,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:24:14,093 INFO L85 PathProgramCache]: Analyzing trace with hash 2638653, now seen corresponding path program 1 times [2021-12-28 01:24:14,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:24:14,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435071630] [2021-12-28 01:24:14,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:24:14,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:24:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:24:14,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:24:14,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:24:14,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435071630] [2021-12-28 01:24:14,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435071630] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:24:14,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:24:14,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:24:14,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399400464] [2021-12-28 01:24:14,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:24:14,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:24:14,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:24:14,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:24:14,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:24:14,117 INFO L87 Difference]: Start difference. First operand 10923 states and 14223 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:20,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:24:20,462 INFO L93 Difference]: Finished difference Result 27479 states and 35765 transitions. [2021-12-28 01:24:20,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:24:20,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-12-28 01:24:20,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:24:20,482 INFO L225 Difference]: With dead ends: 27479 [2021-12-28 01:24:20,482 INFO L226 Difference]: Without dead ends: 17032 [2021-12-28 01:24:20,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:24:20,492 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 96 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 400 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 [2021-12-28 01:24:20,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 400 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:24:20,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17032 states. [2021-12-28 01:24:26,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17032 to 15446. [2021-12-28 01:24:26,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15446 states, 15445 states have (on average 1.2905147296859825) internal successors, (19932), 15445 states have internal predecessors, (19932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:26,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15446 states to 15446 states and 19932 transitions. [2021-12-28 01:24:26,282 INFO L78 Accepts]: Start accepts. Automaton has 15446 states and 19932 transitions. Word has length 74 [2021-12-28 01:24:26,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:24:26,282 INFO L470 AbstractCegarLoop]: Abstraction has 15446 states and 19932 transitions. [2021-12-28 01:24:26,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:26,282 INFO L276 IsEmpty]: Start isEmpty. Operand 15446 states and 19932 transitions. [2021-12-28 01:24:26,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-28 01:24:26,286 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:24:26,287 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:24:26,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-28 01:24:26,287 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:24:26,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:24:26,287 INFO L85 PathProgramCache]: Analyzing trace with hash -786165995, now seen corresponding path program 1 times [2021-12-28 01:24:26,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:24:26,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113922430] [2021-12-28 01:24:26,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:24:26,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:24:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:24:26,394 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:24:26,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:24:26,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113922430] [2021-12-28 01:24:26,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113922430] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 01:24:26,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2644082] [2021-12-28 01:24:26,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:24:26,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 01:24:26,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:24:26,396 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 01:24:26,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 01:24:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:24:26,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-28 01:24:26,509 INFO L286 TraceCheckSpWp]: Computing forward predicates...