./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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_floodmax.4.3.ufo.BOUNDED-8.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 ed8936a2abd022df2df7ae7f4cc5a13ffa2d4ca9f4dc64b188ddb89053a00421 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 13:39:47,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 13:39:47,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 13:39:47,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 13:39:47,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 13:39:47,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 13:39:47,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 13:39:47,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 13:39:47,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 13:39:47,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 13:39:47,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 13:39:47,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 13:39:47,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 13:39:47,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 13:39:47,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 13:39:47,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 13:39:47,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 13:39:47,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 13:39:47,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 13:39:47,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 13:39:47,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 13:39:47,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 13:39:47,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 13:39:47,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 13:39:47,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 13:39:47,245 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 13:39:47,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 13:39:47,247 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 13:39:47,247 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 13:39:47,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 13:39:47,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 13:39:47,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 13:39:47,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 13:39:47,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 13:39:47,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 13:39:47,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 13:39:47,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 13:39:47,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 13:39:47,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 13:39:47,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 13:39:47,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 13:39:47,255 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 13:39:47,293 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 13:39:47,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 13:39:47,296 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 13:39:47,296 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 13:39:47,297 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 13:39:47,298 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 13:39:47,298 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 13:39:47,298 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 13:39:47,299 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 13:39:47,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 13:39:47,300 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 13:39:47,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 13:39:47,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 13:39:47,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 13:39:47,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 13:39:47,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 13:39:47,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 13:39:47,301 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 13:39:47,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 13:39:47,301 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 13:39:47,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 13:39:47,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 13:39:47,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 13:39:47,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 13:39:47,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:39:47,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 13:39:47,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 13:39:47,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 13:39:47,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 13:39:47,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 13:39:47,304 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 13:39:47,304 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 13:39:47,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 13:39:47,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 13:39:47,304 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed8936a2abd022df2df7ae7f4cc5a13ffa2d4ca9f4dc64b188ddb89053a00421 [2021-12-21 13:39:47,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 13:39:47,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 13:39:47,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 13:39:47,517 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 13:39:47,518 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 13:39:47,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2021-12-21 13:39:47,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85cacec70/9fbaf6e3954a4c51a76cec44dd4b0a55/FLAGcfd8b4e7e [2021-12-21 13:39:48,028 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 13:39:48,028 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2021-12-21 13:39:48,050 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85cacec70/9fbaf6e3954a4c51a76cec44dd4b0a55/FLAGcfd8b4e7e [2021-12-21 13:39:48,349 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85cacec70/9fbaf6e3954a4c51a76cec44dd4b0a55 [2021-12-21 13:39:48,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 13:39:48,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 13:39:48,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 13:39:48,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 13:39:48,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 13:39:48,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:39:48" (1/1) ... [2021-12-21 13:39:48,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38314013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:48, skipping insertion in model container [2021-12-21 13:39:48,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:39:48" (1/1) ... [2021-12-21 13:39:48,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 13:39:48,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 13:39:48,915 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_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[31957,31970] [2021-12-21 13:39:49,030 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:39:49,041 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 13:39:49,353 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_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[31957,31970] [2021-12-21 13:39:49,470 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:39:49,489 INFO L208 MainTranslator]: Completed translation [2021-12-21 13:39:49,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:49 WrapperNode [2021-12-21 13:39:49,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 13:39:49,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 13:39:49,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 13:39:49,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 13:39:49,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:49" (1/1) ... [2021-12-21 13:39:49,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:49" (1/1) ... [2021-12-21 13:39:49,592 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2694 [2021-12-21 13:39:49,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 13:39:49,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 13:39:49,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 13:39:49,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 13:39:49,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:49" (1/1) ... [2021-12-21 13:39:49,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:49" (1/1) ... [2021-12-21 13:39:49,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:49" (1/1) ... [2021-12-21 13:39:49,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:49" (1/1) ... [2021-12-21 13:39:49,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:49" (1/1) ... [2021-12-21 13:39:49,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:49" (1/1) ... [2021-12-21 13:39:49,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:49" (1/1) ... [2021-12-21 13:39:49,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 13:39:49,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 13:39:49,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 13:39:49,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 13:39:49,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:49" (1/1) ... [2021-12-21 13:39:49,723 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:39:49,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:39:49,748 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) [2021-12-21 13:39:49,772 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 [2021-12-21 13:39:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 13:39:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 13:39:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 13:39:49,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 13:39:49,948 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 13:39:49,950 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 13:39:51,380 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 13:39:51,397 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 13:39:51,397 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 13:39:51,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:39:51 BoogieIcfgContainer [2021-12-21 13:39:51,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 13:39:51,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 13:39:51,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 13:39:51,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 13:39:51,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:39:48" (1/3) ... [2021-12-21 13:39:51,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ae2399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:39:51, skipping insertion in model container [2021-12-21 13:39:51,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:49" (2/3) ... [2021-12-21 13:39:51,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ae2399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:39:51, skipping insertion in model container [2021-12-21 13:39:51,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:39:51" (3/3) ... [2021-12-21 13:39:51,407 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2021-12-21 13:39:51,411 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 13:39:51,412 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 13:39:51,468 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 13:39:51,475 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 [2021-12-21 13:39:51,475 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 13:39:51,502 INFO L276 IsEmpty]: Start isEmpty. Operand has 719 states, 717 states have (on average 1.7880055788005578) internal successors, (1282), 718 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:39:51,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-12-21 13:39:51,531 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:39:51,531 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:39:51,533 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:39:51,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:39:51,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1986438250, now seen corresponding path program 1 times [2021-12-21 13:39:51,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:39:51,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566494477] [2021-12-21 13:39:51,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:39:51,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:39:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:39:52,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:39:52,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:39:52,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566494477] [2021-12-21 13:39:52,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566494477] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:39:52,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:39:52,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 13:39:52,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983612000] [2021-12-21 13:39:52,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:39:52,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 13:39:52,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:39:52,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 13:39:52,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 13:39:52,467 INFO L87 Difference]: Start difference. First operand has 719 states, 717 states have (on average 1.7880055788005578) internal successors, (1282), 718 states have internal predecessors, (1282), 0 states have call successors, (0), 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 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:39:52,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:39:52,754 INFO L93 Difference]: Finished difference Result 2117 states and 3779 transitions. [2021-12-21 13:39:52,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 13:39:52,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 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 304 [2021-12-21 13:39:52,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:39:52,781 INFO L225 Difference]: With dead ends: 2117 [2021-12-21 13:39:52,781 INFO L226 Difference]: Without dead ends: 1403 [2021-12-21 13:39:52,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:39:52,792 INFO L933 BasicCegarLoop]: 2124 mSDtfsCounter, 2773 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2773 SdHoareTripleChecker+Valid, 3337 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:39:52,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2773 Valid, 3337 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 13:39:52,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2021-12-21 13:39:52,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1401. [2021-12-21 13:39:52,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1400 states have (on average 1.5478571428571428) internal successors, (2167), 1400 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:39:52,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 2167 transitions. [2021-12-21 13:39:52,960 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 2167 transitions. Word has length 304 [2021-12-21 13:39:52,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:39:52,962 INFO L470 AbstractCegarLoop]: Abstraction has 1401 states and 2167 transitions. [2021-12-21 13:39:52,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:39:52,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 2167 transitions. [2021-12-21 13:39:52,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-12-21 13:39:52,971 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:39:52,971 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:39:52,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 13:39:52,972 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:39:52,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:39:52,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1283684265, now seen corresponding path program 1 times [2021-12-21 13:39:52,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:39:52,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433334300] [2021-12-21 13:39:52,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:39:52,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:39:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:39:53,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:39:53,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:39:53,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433334300] [2021-12-21 13:39:53,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433334300] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:39:53,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:39:53,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:39:53,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258592688] [2021-12-21 13:39:53,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:39:53,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:39:53,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:39:53,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:39:53,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:39:53,167 INFO L87 Difference]: Start difference. First operand 1401 states and 2167 transitions. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:39:53,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:39:53,393 INFO L93 Difference]: Finished difference Result 4028 states and 6197 transitions. [2021-12-21 13:39:53,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:39:53,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 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 306 [2021-12-21 13:39:53,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:39:53,407 INFO L225 Difference]: With dead ends: 4028 [2021-12-21 13:39:53,407 INFO L226 Difference]: Without dead ends: 2752 [2021-12-21 13:39:53,412 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 [2021-12-21 13:39:53,414 INFO L933 BasicCegarLoop]: 2102 mSDtfsCounter, 976 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 3159 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:39:53,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 3159 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:39:53,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2752 states. [2021-12-21 13:39:53,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2752 to 2750. [2021-12-21 13:39:53,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2750 states, 2749 states have (on average 1.5391051291378683) internal successors, (4231), 2749 states have internal predecessors, (4231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:39:53,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2750 states to 2750 states and 4231 transitions. [2021-12-21 13:39:53,607 INFO L78 Accepts]: Start accepts. Automaton has 2750 states and 4231 transitions. Word has length 306 [2021-12-21 13:39:53,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:39:53,611 INFO L470 AbstractCegarLoop]: Abstraction has 2750 states and 4231 transitions. [2021-12-21 13:39:53,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:39:53,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2750 states and 4231 transitions. [2021-12-21 13:39:53,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-12-21 13:39:53,618 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:39:53,619 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:39:53,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 13:39:53,621 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:39:53,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:39:53,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1557954012, now seen corresponding path program 1 times [2021-12-21 13:39:53,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:39:53,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982747376] [2021-12-21 13:39:53,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:39:53,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:39:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:39:53,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:39:53,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:39:53,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982747376] [2021-12-21 13:39:53,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982747376] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:39:53,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:39:53,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:39:53,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658824858] [2021-12-21 13:39:53,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:39:53,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:39:53,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:39:53,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:39:53,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:39:53,701 INFO L87 Difference]: Start difference. First operand 2750 states and 4231 transitions. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:39:54,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:39:54,076 INFO L93 Difference]: Finished difference Result 8183 states and 12577 transitions. [2021-12-21 13:39:54,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:39:54,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 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 306 [2021-12-21 13:39:54,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:39:54,097 INFO L225 Difference]: With dead ends: 8183 [2021-12-21 13:39:54,097 INFO L226 Difference]: Without dead ends: 5471 [2021-12-21 13:39:54,103 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 [2021-12-21 13:39:54,109 INFO L933 BasicCegarLoop]: 2204 mSDtfsCounter, 1099 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 3304 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:39:54,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1099 Valid, 3304 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:39:54,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5471 states. [2021-12-21 13:39:54,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5471 to 2769. [2021-12-21 13:39:54,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2769 states, 2768 states have (on average 1.5386560693641618) internal successors, (4259), 2768 states have internal predecessors, (4259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:39:54,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2769 states to 2769 states and 4259 transitions. [2021-12-21 13:39:54,351 INFO L78 Accepts]: Start accepts. Automaton has 2769 states and 4259 transitions. Word has length 306 [2021-12-21 13:39:54,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:39:54,351 INFO L470 AbstractCegarLoop]: Abstraction has 2769 states and 4259 transitions. [2021-12-21 13:39:54,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:39:54,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2769 states and 4259 transitions. [2021-12-21 13:39:54,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-12-21 13:39:54,358 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:39:54,358 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:39:54,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 13:39:54,359 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:39:54,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:39:54,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1382512794, now seen corresponding path program 1 times [2021-12-21 13:39:54,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:39:54,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953293331] [2021-12-21 13:39:54,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:39:54,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:39:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:39:54,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:39:54,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:39:54,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953293331] [2021-12-21 13:39:54,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953293331] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:39:54,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:39:54,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:39:54,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953515054] [2021-12-21 13:39:54,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:39:54,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:39:54,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:39:54,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:39:54,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:39:54,456 INFO L87 Difference]: Start difference. First operand 2769 states and 4259 transitions. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:39:54,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:39:54,820 INFO L93 Difference]: Finished difference Result 8202 states and 12598 transitions. [2021-12-21 13:39:54,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:39:54,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 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 307 [2021-12-21 13:39:54,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:39:54,840 INFO L225 Difference]: With dead ends: 8202 [2021-12-21 13:39:54,840 INFO L226 Difference]: Without dead ends: 5489 [2021-12-21 13:39:54,844 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 [2021-12-21 13:39:54,845 INFO L933 BasicCegarLoop]: 2204 mSDtfsCounter, 1094 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 3304 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:39:54,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1094 Valid, 3304 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:39:54,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5489 states. [2021-12-21 13:39:55,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5489 to 2787. [2021-12-21 13:39:55,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2786 states have (on average 1.5362526920315864) internal successors, (4280), 2786 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:39:55,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 4280 transitions. [2021-12-21 13:39:55,103 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 4280 transitions. Word has length 307 [2021-12-21 13:39:55,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:39:55,103 INFO L470 AbstractCegarLoop]: Abstraction has 2787 states and 4280 transitions. [2021-12-21 13:39:55,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:39:55,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 4280 transitions. [2021-12-21 13:39:55,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-12-21 13:39:55,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:39:55,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:39:55,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 13:39:55,111 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:39:55,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:39:55,111 INFO L85 PathProgramCache]: Analyzing trace with hash -738211950, now seen corresponding path program 1 times [2021-12-21 13:39:55,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:39:55,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448151225] [2021-12-21 13:39:55,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:39:55,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:39:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:39:55,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:39:55,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:39:55,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448151225] [2021-12-21 13:39:55,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448151225] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:39:55,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:39:55,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:39:55,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193259811] [2021-12-21 13:39:55,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:39:55,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:39:55,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:39:55,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:39:55,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:39:55,230 INFO L87 Difference]: Start difference. First operand 2787 states and 4280 transitions. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:39:55,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:39:55,708 INFO L93 Difference]: Finished difference Result 7926 states and 12105 transitions. [2021-12-21 13:39:55,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:39:55,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 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 308 [2021-12-21 13:39:55,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:39:55,729 INFO L225 Difference]: With dead ends: 7926 [2021-12-21 13:39:55,730 INFO L226 Difference]: Without dead ends: 5380 [2021-12-21 13:39:55,734 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 [2021-12-21 13:39:55,734 INFO L933 BasicCegarLoop]: 2164 mSDtfsCounter, 969 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 3221 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:39:55,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [969 Valid, 3221 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:39:55,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5380 states. [2021-12-21 13:39:56,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5380 to 5378. [2021-12-21 13:39:56,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5378 states, 5377 states have (on average 1.5242700390552353) internal successors, (8196), 5377 states have internal predecessors, (8196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:39:56,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5378 states to 5378 states and 8196 transitions. [2021-12-21 13:39:56,150 INFO L78 Accepts]: Start accepts. Automaton has 5378 states and 8196 transitions. Word has length 308 [2021-12-21 13:39:56,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:39:56,152 INFO L470 AbstractCegarLoop]: Abstraction has 5378 states and 8196 transitions. [2021-12-21 13:39:56,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:39:56,156 INFO L276 IsEmpty]: Start isEmpty. Operand 5378 states and 8196 transitions. [2021-12-21 13:39:56,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-12-21 13:39:56,170 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:39:56,170 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:39:56,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 13:39:56,171 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:39:56,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:39:56,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1877946257, now seen corresponding path program 1 times [2021-12-21 13:39:56,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:39:56,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126733352] [2021-12-21 13:39:56,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:39:56,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:39:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:39:56,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:39:56,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:39:56,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126733352] [2021-12-21 13:39:56,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126733352] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:39:56,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:39:56,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 13:39:56,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395355504] [2021-12-21 13:39:56,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:39:56,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:39:56,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:39:56,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:39:56,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:39:56,488 INFO L87 Difference]: Start difference. First operand 5378 states and 8196 transitions. Second operand has 5 states, 5 states have (on average 61.6) internal successors, (308), 5 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:39:57,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:39:57,401 INFO L93 Difference]: Finished difference Result 15652 states and 23797 transitions. [2021-12-21 13:39:57,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 13:39:57,402 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 61.6) internal successors, (308), 5 states have internal predecessors, (308), 0 states have call successors, (0), 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 308 [2021-12-21 13:39:57,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:39:57,446 INFO L225 Difference]: With dead ends: 15652 [2021-12-21 13:39:57,446 INFO L226 Difference]: Without dead ends: 10329 [2021-12-21 13:39:57,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:39:57,457 INFO L933 BasicCegarLoop]: 1784 mSDtfsCounter, 2534 mSDsluCounter, 2094 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2534 SdHoareTripleChecker+Valid, 3878 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:39:57,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2534 Valid, 3878 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 13:39:57,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10329 states. [2021-12-21 13:39:58,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10329 to 10327. [2021-12-21 13:39:58,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10327 states, 10326 states have (on average 1.5092969203951192) internal successors, (15585), 10326 states have internal predecessors, (15585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:39:58,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10327 states to 10327 states and 15585 transitions. [2021-12-21 13:39:58,310 INFO L78 Accepts]: Start accepts. Automaton has 10327 states and 15585 transitions. Word has length 308 [2021-12-21 13:39:58,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:39:58,310 INFO L470 AbstractCegarLoop]: Abstraction has 10327 states and 15585 transitions. [2021-12-21 13:39:58,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.6) internal successors, (308), 5 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:39:58,311 INFO L276 IsEmpty]: Start isEmpty. Operand 10327 states and 15585 transitions. [2021-12-21 13:39:58,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-12-21 13:39:58,331 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:39:58,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:39:58,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 13:39:58,332 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:39:58,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:39:58,333 INFO L85 PathProgramCache]: Analyzing trace with hash -2116203553, now seen corresponding path program 1 times [2021-12-21 13:39:58,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:39:58,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136636784] [2021-12-21 13:39:58,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:39:58,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:39:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:39:58,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:39:58,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:39:58,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136636784] [2021-12-21 13:39:58,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136636784] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:39:58,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:39:58,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 13:39:58,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997504174] [2021-12-21 13:39:58,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:39:58,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 13:39:58,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:39:58,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 13:39:58,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 13:39:58,599 INFO L87 Difference]: Start difference. First operand 10327 states and 15585 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:40:00,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:40:00,171 INFO L93 Difference]: Finished difference Result 30275 states and 45615 transitions. [2021-12-21 13:40:00,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 13:40:00,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2021-12-21 13:40:00,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:40:00,219 INFO L225 Difference]: With dead ends: 30275 [2021-12-21 13:40:00,219 INFO L226 Difference]: Without dead ends: 20145 [2021-12-21 13:40:00,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:40:00,240 INFO L933 BasicCegarLoop]: 1817 mSDtfsCounter, 2338 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2338 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:40:00,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2338 Valid, 2864 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 13:40:00,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20145 states. [2021-12-21 13:40:01,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20145 to 20143. [2021-12-21 13:40:01,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20143 states, 20142 states have (on average 1.4965743223115877) internal successors, (30144), 20142 states have internal predecessors, (30144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:40:01,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20143 states to 20143 states and 30144 transitions. [2021-12-21 13:40:01,912 INFO L78 Accepts]: Start accepts. Automaton has 20143 states and 30144 transitions. Word has length 310 [2021-12-21 13:40:01,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:40:01,912 INFO L470 AbstractCegarLoop]: Abstraction has 20143 states and 30144 transitions. [2021-12-21 13:40:01,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:40:01,913 INFO L276 IsEmpty]: Start isEmpty. Operand 20143 states and 30144 transitions. [2021-12-21 13:40:01,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2021-12-21 13:40:01,949 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:40:01,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:40:01,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 13:40:01,950 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:40:01,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:40:01,951 INFO L85 PathProgramCache]: Analyzing trace with hash -631881513, now seen corresponding path program 1 times [2021-12-21 13:40:01,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:40:01,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668504230] [2021-12-21 13:40:01,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:40:01,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:40:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:40:02,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:40:02,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:40:02,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668504230] [2021-12-21 13:40:02,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668504230] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:40:02,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:40:02,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:40:02,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275511167] [2021-12-21 13:40:02,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:40:02,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:40:02,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:40:02,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:40:02,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:40:02,052 INFO L87 Difference]: Start difference. First operand 20143 states and 30144 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:40:04,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:40:04,589 INFO L93 Difference]: Finished difference Result 58709 states and 87584 transitions. [2021-12-21 13:40:04,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:40:04,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 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 312 [2021-12-21 13:40:04,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:40:04,682 INFO L225 Difference]: With dead ends: 58709 [2021-12-21 13:40:04,682 INFO L226 Difference]: Without dead ends: 39459 [2021-12-21 13:40:04,718 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 [2021-12-21 13:40:04,719 INFO L933 BasicCegarLoop]: 2100 mSDtfsCounter, 950 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 3157 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:40:04,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [950 Valid, 3157 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 13:40:04,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39459 states. [2021-12-21 13:40:07,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39459 to 39457. [2021-12-21 13:40:07,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39457 states, 39456 states have (on average 1.4858576642335766) internal successors, (58626), 39456 states have internal predecessors, (58626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:40:07,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39457 states to 39457 states and 58626 transitions. [2021-12-21 13:40:07,185 INFO L78 Accepts]: Start accepts. Automaton has 39457 states and 58626 transitions. Word has length 312 [2021-12-21 13:40:07,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:40:07,186 INFO L470 AbstractCegarLoop]: Abstraction has 39457 states and 58626 transitions. [2021-12-21 13:40:07,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:40:07,186 INFO L276 IsEmpty]: Start isEmpty. Operand 39457 states and 58626 transitions. [2021-12-21 13:40:07,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2021-12-21 13:40:07,275 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:40:07,275 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:40:07,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 13:40:07,276 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:40:07,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:40:07,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1305870820, now seen corresponding path program 1 times [2021-12-21 13:40:07,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:40:07,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562871682] [2021-12-21 13:40:07,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:40:07,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:40:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:40:07,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:40:07,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:40:07,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562871682] [2021-12-21 13:40:07,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562871682] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:40:07,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:40:07,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:40:07,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503977906] [2021-12-21 13:40:07,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:40:07,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:40:07,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:40:07,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:40:07,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:40:07,347 INFO L87 Difference]: Start difference. First operand 39457 states and 58626 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:40:12,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:40:12,057 INFO L93 Difference]: Finished difference Result 117575 states and 174572 transitions. [2021-12-21 13:40:12,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:40:12,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 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 312 [2021-12-21 13:40:12,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:40:12,218 INFO L225 Difference]: With dead ends: 117575 [2021-12-21 13:40:12,219 INFO L226 Difference]: Without dead ends: 78561 [2021-12-21 13:40:12,283 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 [2021-12-21 13:40:12,284 INFO L933 BasicCegarLoop]: 2171 mSDtfsCounter, 1066 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 3271 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:40:12,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1066 Valid, 3271 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:40:12,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78561 states. [2021-12-21 13:40:15,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78561 to 39647. [2021-12-21 13:40:15,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39647 states, 39646 states have (on average 1.4857993240175553) internal successors, (58906), 39646 states have internal predecessors, (58906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:40:15,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39647 states to 39647 states and 58906 transitions. [2021-12-21 13:40:15,836 INFO L78 Accepts]: Start accepts. Automaton has 39647 states and 58906 transitions. Word has length 312 [2021-12-21 13:40:15,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:40:15,836 INFO L470 AbstractCegarLoop]: Abstraction has 39647 states and 58906 transitions. [2021-12-21 13:40:15,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:40:15,837 INFO L276 IsEmpty]: Start isEmpty. Operand 39647 states and 58906 transitions. [2021-12-21 13:40:15,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2021-12-21 13:40:15,878 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:40:15,878 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:40:15,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 13:40:15,879 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:40:15,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:40:15,879 INFO L85 PathProgramCache]: Analyzing trace with hash 367949216, now seen corresponding path program 1 times [2021-12-21 13:40:15,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:40:15,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966252915] [2021-12-21 13:40:15,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:40:15,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:40:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:40:15,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:40:15,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:40:15,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966252915] [2021-12-21 13:40:15,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966252915] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:40:15,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:40:15,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:40:15,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023736825] [2021-12-21 13:40:15,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:40:15,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:40:15,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:40:15,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:40:15,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:40:15,947 INFO L87 Difference]: Start difference. First operand 39647 states and 58906 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:40:21,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:40:21,073 INFO L93 Difference]: Finished difference Result 117687 states and 174650 transitions. [2021-12-21 13:40:21,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:40:21,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 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 313 [2021-12-21 13:40:21,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:40:21,206 INFO L225 Difference]: With dead ends: 117687 [2021-12-21 13:40:21,207 INFO L226 Difference]: Without dead ends: 78723 [2021-12-21 13:40:21,261 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 [2021-12-21 13:40:21,262 INFO L933 BasicCegarLoop]: 2171 mSDtfsCounter, 1061 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 3271 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:40:21,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1061 Valid, 3271 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:40:21,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78723 states. [2021-12-21 13:40:24,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78723 to 39809. [2021-12-21 13:40:24,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39809 states, 39808 states have (on average 1.4844252411575563) internal successors, (59092), 39808 states have internal predecessors, (59092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:40:24,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39809 states to 39809 states and 59092 transitions. [2021-12-21 13:40:24,514 INFO L78 Accepts]: Start accepts. Automaton has 39809 states and 59092 transitions. Word has length 313 [2021-12-21 13:40:24,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:40:24,514 INFO L470 AbstractCegarLoop]: Abstraction has 39809 states and 59092 transitions. [2021-12-21 13:40:24,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:40:24,514 INFO L276 IsEmpty]: Start isEmpty. Operand 39809 states and 59092 transitions. [2021-12-21 13:40:24,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2021-12-21 13:40:24,567 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:40:24,567 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:40:24,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 13:40:24,568 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:40:24,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:40:24,568 INFO L85 PathProgramCache]: Analyzing trace with hash 303830930, now seen corresponding path program 1 times [2021-12-21 13:40:24,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:40:24,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246878593] [2021-12-21 13:40:24,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:40:24,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:40:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:40:24,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:40:24,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:40:24,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246878593] [2021-12-21 13:40:24,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246878593] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:40:24,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:40:24,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:40:24,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117784628] [2021-12-21 13:40:24,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:40:24,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:40:24,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:40:24,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:40:24,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:40:24,650 INFO L87 Difference]: Start difference. First operand 39809 states and 59092 transitions. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:40:30,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:40:30,241 INFO L93 Difference]: Finished difference Result 115875 states and 171594 transitions. [2021-12-21 13:40:30,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:40:30,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 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 314 [2021-12-21 13:40:30,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:40:30,349 INFO L225 Difference]: With dead ends: 115875 [2021-12-21 13:40:30,349 INFO L226 Difference]: Without dead ends: 77609 [2021-12-21 13:40:30,388 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 [2021-12-21 13:40:30,389 INFO L933 BasicCegarLoop]: 2131 mSDtfsCounter, 943 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 3188 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:40:30,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [943 Valid, 3188 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:40:30,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77609 states.