./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label09.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 f3efee8c660a339e6d13fe6728631748153baced66b17ec0d4ea728c6f50decb --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 20:40:30,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 20:40:30,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 20:40:30,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 20:40:30,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 20:40:30,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 20:40:30,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 20:40:30,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 20:40:30,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 20:40:30,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 20:40:30,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 20:40:30,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 20:40:30,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 20:40:30,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 20:40:30,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 20:40:30,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 20:40:30,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 20:40:30,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 20:40:30,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 20:40:30,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 20:40:30,352 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 20:40:30,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 20:40:30,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 20:40:30,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 20:40:30,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 20:40:30,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 20:40:30,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 20:40:30,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 20:40:30,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 20:40:30,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 20:40:30,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 20:40:30,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 20:40:30,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 20:40:30,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 20:40:30,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 20:40:30,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 20:40:30,368 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 20:40:30,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 20:40:30,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 20:40:30,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 20:40:30,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 20:40:30,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 20:40:30,373 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 20:40:30,406 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 20:40:30,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 20:40:30,407 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 20:40:30,407 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 20:40:30,408 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 20:40:30,408 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 20:40:30,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 20:40:30,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 20:40:30,409 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 20:40:30,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 20:40:30,410 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 20:40:30,410 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 20:40:30,410 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 20:40:30,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 20:40:30,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 20:40:30,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 20:40:30,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 20:40:30,411 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 20:40:30,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 20:40:30,411 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 20:40:30,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 20:40:30,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 20:40:30,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 20:40:30,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 20:40:30,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:40:30,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 20:40:30,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 20:40:30,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 20:40:30,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 20:40:30,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 20:40:30,414 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 20:40:30,414 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 20:40:30,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 20:40:30,414 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3efee8c660a339e6d13fe6728631748153baced66b17ec0d4ea728c6f50decb [2022-07-13 20:40:30,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 20:40:30,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 20:40:30,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 20:40:30,675 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 20:40:30,676 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 20:40:30,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-07-13 20:40:30,736 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8934ae833/d3835b5ee55a4b44b34763acc8ad56fd/FLAG8814c1af7 [2022-07-13 20:40:31,357 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 20:40:31,357 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-07-13 20:40:31,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8934ae833/d3835b5ee55a4b44b34763acc8ad56fd/FLAG8814c1af7 [2022-07-13 20:40:31,476 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8934ae833/d3835b5ee55a4b44b34763acc8ad56fd [2022-07-13 20:40:31,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 20:40:31,481 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 20:40:31,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 20:40:31,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 20:40:31,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 20:40:31,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:40:31" (1/1) ... [2022-07-13 20:40:31,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d2df0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:40:31, skipping insertion in model container [2022-07-13 20:40:31,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:40:31" (1/1) ... [2022-07-13 20:40:31,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 20:40:31,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 20:40:31,935 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/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label09.c[6487,6500] [2022-07-13 20:40:32,009 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/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label09.c[14235,14248] [2022-07-13 20:40:32,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:40:32,620 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 20:40:32,650 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/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label09.c[6487,6500] [2022-07-13 20:40:32,662 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/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label09.c[14235,14248] [2022-07-13 20:40:33,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:40:33,041 INFO L208 MainTranslator]: Completed translation [2022-07-13 20:40:33,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:40:33 WrapperNode [2022-07-13 20:40:33,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 20:40:33,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 20:40:33,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 20:40:33,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 20:40:33,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:40:33" (1/1) ... [2022-07-13 20:40:33,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:40:33" (1/1) ... [2022-07-13 20:40:33,399 INFO L137 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4977 [2022-07-13 20:40:33,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 20:40:33,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 20:40:33,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 20:40:33,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 20:40:33,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:40:33" (1/1) ... [2022-07-13 20:40:33,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:40:33" (1/1) ... [2022-07-13 20:40:33,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:40:33" (1/1) ... [2022-07-13 20:40:33,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:40:33" (1/1) ... [2022-07-13 20:40:33,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:40:33" (1/1) ... [2022-07-13 20:40:33,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:40:33" (1/1) ... [2022-07-13 20:40:33,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:40:33" (1/1) ... [2022-07-13 20:40:33,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 20:40:33,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 20:40:33,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 20:40:33,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 20:40:33,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:40:33" (1/1) ... [2022-07-13 20:40:33,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:40:33,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:40:33,837 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) [2022-07-13 20:40:33,867 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 [2022-07-13 20:40:33,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 20:40:33,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 20:40:33,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 20:40:33,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 20:40:34,010 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 20:40:34,011 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 20:40:37,472 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 20:40:37,488 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 20:40:37,488 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 20:40:37,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:40:37 BoogieIcfgContainer [2022-07-13 20:40:37,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 20:40:37,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 20:40:37,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 20:40:37,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 20:40:37,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 08:40:31" (1/3) ... [2022-07-13 20:40:37,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@396c0513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:40:37, skipping insertion in model container [2022-07-13 20:40:37,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:40:33" (2/3) ... [2022-07-13 20:40:37,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@396c0513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:40:37, skipping insertion in model container [2022-07-13 20:40:37,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:40:37" (3/3) ... [2022-07-13 20:40:37,501 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-07-13 20:40:37,516 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 20:40:37,517 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 20:40:37,575 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 20:40:37,586 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3269cc42, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@25e6a51d [2022-07-13 20:40:37,587 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 20:40:37,598 INFO L276 IsEmpty]: Start isEmpty. Operand has 880 states, 877 states have (on average 1.903078677309008) internal successors, (1669), 879 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:37,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-13 20:40:37,606 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:37,606 INFO L195 NwaCegarLoop]: 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] [2022-07-13 20:40:37,606 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:37,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:37,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1601385972, now seen corresponding path program 1 times [2022-07-13 20:40:37,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:37,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767470737] [2022-07-13 20:40:37,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:37,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:37,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:40:37,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:37,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767470737] [2022-07-13 20:40:37,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767470737] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:40:37,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:40:37,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 20:40:37,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686219586] [2022-07-13 20:40:37,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:40:37,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 20:40:37,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:37,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 20:40:37,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 20:40:37,833 INFO L87 Difference]: Start difference. First operand has 880 states, 877 states have (on average 1.903078677309008) internal successors, (1669), 879 states have internal predecessors, (1669), 0 states have call successors, (0), 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 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:37,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:37,915 INFO L93 Difference]: Finished difference Result 1736 states and 3296 transitions. [2022-07-13 20:40:37,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 20:40:37,918 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-07-13 20:40:37,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:37,936 INFO L225 Difference]: With dead ends: 1736 [2022-07-13 20:40:37,937 INFO L226 Difference]: Without dead ends: 814 [2022-07-13 20:40:37,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 20:40:37,948 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:37,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:40:37,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-13 20:40:38,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 814. [2022-07-13 20:40:38,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 812 states have (on average 1.8916256157635467) internal successors, (1536), 813 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:38,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1536 transitions. [2022-07-13 20:40:38,025 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1536 transitions. Word has length 26 [2022-07-13 20:40:38,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:38,025 INFO L495 AbstractCegarLoop]: Abstraction has 814 states and 1536 transitions. [2022-07-13 20:40:38,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:38,026 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1536 transitions. [2022-07-13 20:40:38,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-13 20:40:38,027 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:38,027 INFO L195 NwaCegarLoop]: 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] [2022-07-13 20:40:38,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 20:40:38,028 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:38,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:38,028 INFO L85 PathProgramCache]: Analyzing trace with hash 783737522, now seen corresponding path program 1 times [2022-07-13 20:40:38,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:38,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296885204] [2022-07-13 20:40:38,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:38,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:38,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:40:38,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:38,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296885204] [2022-07-13 20:40:38,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296885204] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:40:38,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:40:38,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:40:38,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600572857] [2022-07-13 20:40:38,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:40:38,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:40:38,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:38,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:40:38,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:40:38,153 INFO L87 Difference]: Start difference. First operand 814 states and 1536 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:38,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:38,293 INFO L93 Difference]: Finished difference Result 856 states and 1599 transitions. [2022-07-13 20:40:38,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 20:40:38,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-07-13 20:40:38,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:38,298 INFO L225 Difference]: With dead ends: 856 [2022-07-13 20:40:38,298 INFO L226 Difference]: Without dead ends: 814 [2022-07-13 20:40:38,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:40:38,301 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 3 mSDsluCounter, 4583 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6117 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:38,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6117 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:40:38,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-13 20:40:38,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 814. [2022-07-13 20:40:38,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 812 states have (on average 1.8719211822660098) internal successors, (1520), 813 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:38,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1520 transitions. [2022-07-13 20:40:38,359 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1520 transitions. Word has length 26 [2022-07-13 20:40:38,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:38,359 INFO L495 AbstractCegarLoop]: Abstraction has 814 states and 1520 transitions. [2022-07-13 20:40:38,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:38,360 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1520 transitions. [2022-07-13 20:40:38,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-13 20:40:38,365 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:38,365 INFO L195 NwaCegarLoop]: 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] [2022-07-13 20:40:38,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 20:40:38,366 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:38,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:38,369 INFO L85 PathProgramCache]: Analyzing trace with hash -698732182, now seen corresponding path program 1 times [2022-07-13 20:40:38,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:38,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192131998] [2022-07-13 20:40:38,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:38,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:38,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:40:38,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:38,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192131998] [2022-07-13 20:40:38,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192131998] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:40:38,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:40:38,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:40:38,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965493760] [2022-07-13 20:40:38,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:40:38,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:40:38,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:38,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:40:38,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:40:38,450 INFO L87 Difference]: Start difference. First operand 814 states and 1520 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:38,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:38,478 INFO L93 Difference]: Finished difference Result 884 states and 1628 transitions. [2022-07-13 20:40:38,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:40:38,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-07-13 20:40:38,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:38,485 INFO L225 Difference]: With dead ends: 884 [2022-07-13 20:40:38,485 INFO L226 Difference]: Without dead ends: 846 [2022-07-13 20:40:38,489 INFO L412 NwaCegarLoop]: 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 [2022-07-13 20:40:38,491 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1484 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:38,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1610 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:40:38,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2022-07-13 20:40:38,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 844. [2022-07-13 20:40:38,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 842 states have (on average 1.8610451306413303) internal successors, (1567), 843 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:38,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1567 transitions. [2022-07-13 20:40:38,510 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1567 transitions. Word has length 41 [2022-07-13 20:40:38,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:38,511 INFO L495 AbstractCegarLoop]: Abstraction has 844 states and 1567 transitions. [2022-07-13 20:40:38,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:38,511 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1567 transitions. [2022-07-13 20:40:38,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-13 20:40:38,515 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:38,516 INFO L195 NwaCegarLoop]: 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] [2022-07-13 20:40:38,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 20:40:38,516 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:38,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:38,519 INFO L85 PathProgramCache]: Analyzing trace with hash -360939040, now seen corresponding path program 1 times [2022-07-13 20:40:38,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:38,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141383923] [2022-07-13 20:40:38,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:38,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:38,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:40:38,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:38,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141383923] [2022-07-13 20:40:38,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141383923] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:40:38,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:40:38,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:40:38,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74335176] [2022-07-13 20:40:38,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:40:38,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:40:38,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:38,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:40:38,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:40:38,610 INFO L87 Difference]: Start difference. First operand 844 states and 1567 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:38,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:38,640 INFO L93 Difference]: Finished difference Result 968 states and 1759 transitions. [2022-07-13 20:40:38,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:40:38,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-07-13 20:40:38,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:38,644 INFO L225 Difference]: With dead ends: 968 [2022-07-13 20:40:38,644 INFO L226 Difference]: Without dead ends: 900 [2022-07-13 20:40:38,645 INFO L412 NwaCegarLoop]: 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 [2022-07-13 20:40:38,652 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 1480 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:38,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1609 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:40:38,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2022-07-13 20:40:38,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 898. [2022-07-13 20:40:38,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 896 states have (on average 1.8415178571428572) internal successors, (1650), 897 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:38,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1650 transitions. [2022-07-13 20:40:38,690 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1650 transitions. Word has length 41 [2022-07-13 20:40:38,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:38,690 INFO L495 AbstractCegarLoop]: Abstraction has 898 states and 1650 transitions. [2022-07-13 20:40:38,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:38,690 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1650 transitions. [2022-07-13 20:40:38,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-13 20:40:38,692 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:38,692 INFO L195 NwaCegarLoop]: 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] [2022-07-13 20:40:38,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 20:40:38,692 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:38,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:38,693 INFO L85 PathProgramCache]: Analyzing trace with hash 857046358, now seen corresponding path program 1 times [2022-07-13 20:40:38,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:38,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718927972] [2022-07-13 20:40:38,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:38,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:38,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:40:38,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:38,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718927972] [2022-07-13 20:40:38,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718927972] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:40:38,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:40:38,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:40:38,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274876365] [2022-07-13 20:40:38,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:40:38,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:40:38,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:38,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:40:38,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:40:38,774 INFO L87 Difference]: Start difference. First operand 898 states and 1650 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:38,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:38,920 INFO L93 Difference]: Finished difference Result 1630 states and 2784 transitions. [2022-07-13 20:40:38,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 20:40:38,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-07-13 20:40:38,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:38,928 INFO L225 Difference]: With dead ends: 1630 [2022-07-13 20:40:38,928 INFO L226 Difference]: Without dead ends: 1508 [2022-07-13 20:40:38,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:40:38,930 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 4693 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4693 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:38,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4693 Valid, 1934 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:40:38,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2022-07-13 20:40:38,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1018. [2022-07-13 20:40:38,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1018 states, 1016 states have (on average 1.8011811023622046) internal successors, (1830), 1017 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:38,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1830 transitions. [2022-07-13 20:40:38,965 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1830 transitions. Word has length 41 [2022-07-13 20:40:38,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:38,966 INFO L495 AbstractCegarLoop]: Abstraction has 1018 states and 1830 transitions. [2022-07-13 20:40:38,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:38,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1830 transitions. [2022-07-13 20:40:38,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-13 20:40:38,967 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:38,967 INFO L195 NwaCegarLoop]: 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] [2022-07-13 20:40:38,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 20:40:38,968 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:38,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:38,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1867096070, now seen corresponding path program 1 times [2022-07-13 20:40:38,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:38,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617780699] [2022-07-13 20:40:38,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:38,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:39,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:40:39,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:39,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617780699] [2022-07-13 20:40:39,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617780699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:40:39,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:40:39,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:40:39,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108082722] [2022-07-13 20:40:39,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:40:39,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:40:39,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:39,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:40:39,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:40:39,021 INFO L87 Difference]: Start difference. First operand 1018 states and 1830 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:39,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:39,067 INFO L93 Difference]: Finished difference Result 1458 states and 2492 transitions. [2022-07-13 20:40:39,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:40:39,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-07-13 20:40:39,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:39,073 INFO L225 Difference]: With dead ends: 1458 [2022-07-13 20:40:39,073 INFO L226 Difference]: Without dead ends: 1216 [2022-07-13 20:40:39,074 INFO L412 NwaCegarLoop]: 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 [2022-07-13 20:40:39,075 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 1471 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:39,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1471 Valid, 1569 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:40:39,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2022-07-13 20:40:39,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1206. [2022-07-13 20:40:39,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1204 states have (on average 1.739202657807309) internal successors, (2094), 1205 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:39,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2094 transitions. [2022-07-13 20:40:39,116 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2094 transitions. Word has length 43 [2022-07-13 20:40:39,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:39,116 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 2094 transitions. [2022-07-13 20:40:39,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:39,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2094 transitions. [2022-07-13 20:40:39,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-13 20:40:39,117 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:39,117 INFO L195 NwaCegarLoop]: 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] [2022-07-13 20:40:39,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 20:40:39,118 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:39,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:39,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1933589582, now seen corresponding path program 1 times [2022-07-13 20:40:39,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:39,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678313928] [2022-07-13 20:40:39,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:39,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:39,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:40:39,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:39,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678313928] [2022-07-13 20:40:39,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678313928] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:40:39,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:40:39,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:40:39,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818087248] [2022-07-13 20:40:39,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:40:39,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:40:39,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:39,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:40:39,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:40:39,199 INFO L87 Difference]: Start difference. First operand 1206 states and 2094 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:39,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:39,327 INFO L93 Difference]: Finished difference Result 1638 states and 2728 transitions. [2022-07-13 20:40:39,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 20:40:39,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-07-13 20:40:39,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:39,332 INFO L225 Difference]: With dead ends: 1638 [2022-07-13 20:40:39,333 INFO L226 Difference]: Without dead ends: 1208 [2022-07-13 20:40:39,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:40:39,336 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 1531 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:39,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1531 Valid, 1680 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:40:39,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2022-07-13 20:40:39,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1206. [2022-07-13 20:40:39,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1204 states have (on average 1.7325581395348837) internal successors, (2086), 1205 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:39,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2086 transitions. [2022-07-13 20:40:39,387 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2086 transitions. Word has length 43 [2022-07-13 20:40:39,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:39,389 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 2086 transitions. [2022-07-13 20:40:39,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:39,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2086 transitions. [2022-07-13 20:40:39,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-13 20:40:39,391 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:39,391 INFO L195 NwaCegarLoop]: 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] [2022-07-13 20:40:39,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 20:40:39,391 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:39,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:39,392 INFO L85 PathProgramCache]: Analyzing trace with hash -602988295, now seen corresponding path program 1 times [2022-07-13 20:40:39,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:39,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646431037] [2022-07-13 20:40:39,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:39,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:39,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:40:39,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:39,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646431037] [2022-07-13 20:40:39,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646431037] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:40:39,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:40:39,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 20:40:39,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026486525] [2022-07-13 20:40:39,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:40:39,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 20:40:39,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:39,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 20:40:39,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:40:39,485 INFO L87 Difference]: Start difference. First operand 1206 states and 2086 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:39,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:39,689 INFO L93 Difference]: Finished difference Result 1540 states and 2558 transitions. [2022-07-13 20:40:39,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 20:40:39,690 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-07-13 20:40:39,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:39,695 INFO L225 Difference]: With dead ends: 1540 [2022-07-13 20:40:39,696 INFO L226 Difference]: Without dead ends: 1538 [2022-07-13 20:40:39,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-13 20:40:39,697 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 396 mSDsluCounter, 8921 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 10473 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:39,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 10473 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:40:39,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2022-07-13 20:40:39,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1230. [2022-07-13 20:40:39,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 1228 states have (on average 1.714983713355049) internal successors, (2106), 1229 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:39,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 2106 transitions. [2022-07-13 20:40:39,753 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 2106 transitions. Word has length 44 [2022-07-13 20:40:39,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:39,754 INFO L495 AbstractCegarLoop]: Abstraction has 1230 states and 2106 transitions. [2022-07-13 20:40:39,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:39,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 2106 transitions. [2022-07-13 20:40:39,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 20:40:39,755 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:39,755 INFO L195 NwaCegarLoop]: 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] [2022-07-13 20:40:39,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 20:40:39,755 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:39,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:39,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1900121563, now seen corresponding path program 1 times [2022-07-13 20:40:39,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:39,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366890474] [2022-07-13 20:40:39,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:39,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:39,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:40:39,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:39,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366890474] [2022-07-13 20:40:39,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366890474] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:40:39,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:40:39,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:40:39,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290251547] [2022-07-13 20:40:39,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:40:39,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:40:39,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:39,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:40:39,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:40:39,784 INFO L87 Difference]: Start difference. First operand 1230 states and 2106 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:39,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:39,852 INFO L93 Difference]: Finished difference Result 1701 states and 2784 transitions. [2022-07-13 20:40:39,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:40:39,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-07-13 20:40:39,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:39,858 INFO L225 Difference]: With dead ends: 1701 [2022-07-13 20:40:39,858 INFO L226 Difference]: Without dead ends: 1434 [2022-07-13 20:40:39,859 INFO L412 NwaCegarLoop]: 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 [2022-07-13 20:40:39,860 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 1485 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:39,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1615 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:40:39,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2022-07-13 20:40:39,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1432. [2022-07-13 20:40:39,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1430 states have (on average 1.6671328671328671) internal successors, (2384), 1431 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:39,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 2384 transitions. [2022-07-13 20:40:39,930 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 2384 transitions. Word has length 45 [2022-07-13 20:40:39,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:39,931 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 2384 transitions. [2022-07-13 20:40:39,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:39,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 2384 transitions. [2022-07-13 20:40:39,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-13 20:40:39,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:39,932 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:40:39,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 20:40:39,933 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:39,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:39,934 INFO L85 PathProgramCache]: Analyzing trace with hash -393288849, now seen corresponding path program 1 times [2022-07-13 20:40:39,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:39,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654329171] [2022-07-13 20:40:39,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:39,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:39,982 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 20:40:39,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:39,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654329171] [2022-07-13 20:40:39,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654329171] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:40:39,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:40:39,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:40:39,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044630428] [2022-07-13 20:40:39,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:40:39,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:40:39,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:39,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:40:39,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:40:39,985 INFO L87 Difference]: Start difference. First operand 1432 states and 2384 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:40,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:40,251 INFO L93 Difference]: Finished difference Result 3536 states and 5336 transitions. [2022-07-13 20:40:40,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 20:40:40,252 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-13 20:40:40,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:40,262 INFO L225 Difference]: With dead ends: 3536 [2022-07-13 20:40:40,262 INFO L226 Difference]: Without dead ends: 2882 [2022-07-13 20:40:40,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:40:40,266 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 3084 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3084 SdHoareTripleChecker+Valid, 3199 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:40,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3084 Valid, 3199 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:40:40,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2022-07-13 20:40:40,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 2084. [2022-07-13 20:40:40,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 2082 states have (on average 1.5811719500480308) internal successors, (3292), 2083 states have internal predecessors, (3292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:40,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 3292 transitions. [2022-07-13 20:40:40,385 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 3292 transitions. Word has length 64 [2022-07-13 20:40:40,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:40,386 INFO L495 AbstractCegarLoop]: Abstraction has 2084 states and 3292 transitions. [2022-07-13 20:40:40,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:40,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 3292 transitions. [2022-07-13 20:40:40,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-13 20:40:40,388 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:40,388 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:40:40,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 20:40:40,388 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:40,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:40,389 INFO L85 PathProgramCache]: Analyzing trace with hash 2132895631, now seen corresponding path program 1 times [2022-07-13 20:40:40,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:40,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196342388] [2022-07-13 20:40:40,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:40,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:40,456 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 20:40:40,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:40,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196342388] [2022-07-13 20:40:40,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196342388] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:40:40,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:40:40,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:40:40,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593978767] [2022-07-13 20:40:40,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:40:40,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:40:40,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:40,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:40:40,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:40:40,459 INFO L87 Difference]: Start difference. First operand 2084 states and 3292 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:40,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:40,696 INFO L93 Difference]: Finished difference Result 4188 states and 6244 transitions. [2022-07-13 20:40:40,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 20:40:40,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-13 20:40:40,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:40,709 INFO L225 Difference]: With dead ends: 4188 [2022-07-13 20:40:40,710 INFO L226 Difference]: Without dead ends: 3534 [2022-07-13 20:40:40,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:40:40,712 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 3078 mSDsluCounter, 1649 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3078 SdHoareTripleChecker+Valid, 3217 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:40,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3078 Valid, 3217 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:40:40,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3534 states. [2022-07-13 20:40:40,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3534 to 3064. [2022-07-13 20:40:40,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3064 states, 3062 states have (on average 1.5166557805355976) internal successors, (4644), 3063 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:40,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 4644 transitions. [2022-07-13 20:40:40,889 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 4644 transitions. Word has length 64 [2022-07-13 20:40:40,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:40,889 INFO L495 AbstractCegarLoop]: Abstraction has 3064 states and 4644 transitions. [2022-07-13 20:40:40,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:40,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 4644 transitions. [2022-07-13 20:40:40,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 20:40:40,891 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:40,891 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:40:40,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 20:40:40,892 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:40,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:40,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1342668761, now seen corresponding path program 1 times [2022-07-13 20:40:40,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:40,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681132219] [2022-07-13 20:40:40,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:40,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:40,926 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:40:40,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:40,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681132219] [2022-07-13 20:40:40,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681132219] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:40:40,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:40:40,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:40:40,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905560876] [2022-07-13 20:40:40,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:40:40,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:40:40,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:40,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:40:40,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:40:40,929 INFO L87 Difference]: Start difference. First operand 3064 states and 4644 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:41,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:41,070 INFO L93 Difference]: Finished difference Result 4714 states and 6968 transitions. [2022-07-13 20:40:41,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:40:41,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-13 20:40:41,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:41,079 INFO L225 Difference]: With dead ends: 4714 [2022-07-13 20:40:41,079 INFO L226 Difference]: Without dead ends: 2428 [2022-07-13 20:40:41,082 INFO L412 NwaCegarLoop]: 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 [2022-07-13 20:40:41,083 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 36 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:41,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3048 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:40:41,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2428 states. [2022-07-13 20:40:41,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2428 to 2426. [2022-07-13 20:40:41,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2426 states, 2424 states have (on average 1.549917491749175) internal successors, (3757), 2425 states have internal predecessors, (3757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:41,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 3757 transitions. [2022-07-13 20:40:41,220 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 3757 transitions. Word has length 66 [2022-07-13 20:40:41,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:41,220 INFO L495 AbstractCegarLoop]: Abstraction has 2426 states and 3757 transitions. [2022-07-13 20:40:41,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:41,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 3757 transitions. [2022-07-13 20:40:41,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 20:40:41,222 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:41,222 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:40:41,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 20:40:41,223 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:41,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:41,223 INFO L85 PathProgramCache]: Analyzing trace with hash -366937100, now seen corresponding path program 1 times [2022-07-13 20:40:41,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:41,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938565933] [2022-07-13 20:40:41,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:41,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:41,272 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 20:40:41,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:41,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938565933] [2022-07-13 20:40:41,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938565933] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:40:41,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:40:41,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:40:41,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209535015] [2022-07-13 20:40:41,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:40:41,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:40:41,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:41,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:40:41,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:40:41,275 INFO L87 Difference]: Start difference. First operand 2426 states and 3757 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:41,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:41,487 INFO L93 Difference]: Finished difference Result 3826 states and 5729 transitions. [2022-07-13 20:40:41,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 20:40:41,488 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-13 20:40:41,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:41,500 INFO L225 Difference]: With dead ends: 3826 [2022-07-13 20:40:41,500 INFO L226 Difference]: Without dead ends: 3360 [2022-07-13 20:40:41,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:40:41,503 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 3074 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3074 SdHoareTripleChecker+Valid, 3215 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:41,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3074 Valid, 3215 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:40:41,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3360 states. [2022-07-13 20:40:41,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3360 to 2890. [2022-07-13 20:40:41,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2890 states, 2888 states have (on average 1.5252770083102494) internal successors, (4405), 2889 states have internal predecessors, (4405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:41,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2890 states to 2890 states and 4405 transitions. [2022-07-13 20:40:41,673 INFO L78 Accepts]: Start accepts. Automaton has 2890 states and 4405 transitions. Word has length 66 [2022-07-13 20:40:41,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:41,673 INFO L495 AbstractCegarLoop]: Abstraction has 2890 states and 4405 transitions. [2022-07-13 20:40:41,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:41,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2890 states and 4405 transitions. [2022-07-13 20:40:41,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 20:40:41,677 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:41,677 INFO L195 NwaCegarLoop]: 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] [2022-07-13 20:40:41,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 20:40:41,678 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:41,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:41,678 INFO L85 PathProgramCache]: Analyzing trace with hash -914037272, now seen corresponding path program 1 times [2022-07-13 20:40:41,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:41,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859957612] [2022-07-13 20:40:41,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:41,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:41,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:40:41,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:41,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859957612] [2022-07-13 20:40:41,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859957612] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:40:41,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:40:41,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:40:41,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127207378] [2022-07-13 20:40:41,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:40:41,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 20:40:41,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:41,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 20:40:41,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 20:40:41,734 INFO L87 Difference]: Start difference. First operand 2890 states and 4405 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:47,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:47,366 INFO L93 Difference]: Finished difference Result 5145 states and 8714 transitions. [2022-07-13 20:40:47,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 20:40:47,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-13 20:40:47,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:47,385 INFO L225 Difference]: With dead ends: 5145 [2022-07-13 20:40:47,385 INFO L226 Difference]: Without dead ends: 4392 [2022-07-13 20:40:47,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:40:47,388 INFO L413 NwaCegarLoop]: 774 mSDtfsCounter, 2342 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2342 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 6404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1250 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:47,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2342 Valid, 792 Invalid, 6404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1250 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-07-13 20:40:47,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4392 states. [2022-07-13 20:40:47,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4392 to 4392. [2022-07-13 20:40:47,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4392 states, 4390 states have (on average 1.4535307517084282) internal successors, (6381), 4391 states have internal predecessors, (6381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:47,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4392 states to 4392 states and 6381 transitions. [2022-07-13 20:40:47,604 INFO L78 Accepts]: Start accepts. Automaton has 4392 states and 6381 transitions. Word has length 67 [2022-07-13 20:40:47,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:47,605 INFO L495 AbstractCegarLoop]: Abstraction has 4392 states and 6381 transitions. [2022-07-13 20:40:47,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:47,605 INFO L276 IsEmpty]: Start isEmpty. Operand 4392 states and 6381 transitions. [2022-07-13 20:40:47,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 20:40:47,606 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:47,607 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:40:47,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 20:40:47,607 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:47,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:47,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1328887140, now seen corresponding path program 1 times [2022-07-13 20:40:47,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:47,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306954675] [2022-07-13 20:40:47,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:47,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:47,852 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:40:47,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:47,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306954675] [2022-07-13 20:40:47,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306954675] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:40:47,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547149948] [2022-07-13 20:40:47,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:47,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:40:47,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:40:47,859 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:40:47,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 20:40:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:47,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 20:40:47,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:40:48,236 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 20:40:48,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:40:48,383 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 20:40:48,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547149948] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 20:40:48,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 20:40:48,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2022-07-13 20:40:48,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189537495] [2022-07-13 20:40:48,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 20:40:48,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 20:40:48,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:48,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 20:40:48,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-07-13 20:40:48,387 INFO L87 Difference]: Start difference. First operand 4392 states and 6381 transitions. Second operand has 18 states, 18 states have (on average 10.222222222222221) internal successors, (184), 18 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:53,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:53,499 INFO L93 Difference]: Finished difference Result 24772 states and 34226 transitions. [2022-07-13 20:40:53,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-07-13 20:40:53,499 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.222222222222221) internal successors, (184), 18 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-13 20:40:53,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:53,552 INFO L225 Difference]: With dead ends: 24772 [2022-07-13 20:40:53,552 INFO L226 Difference]: Without dead ends: 22682 [2022-07-13 20:40:53,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4630 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2148, Invalid=10062, Unknown=0, NotChecked=0, Total=12210 [2022-07-13 20:40:53,569 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 16603 mSDsluCounter, 5183 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16603 SdHoareTripleChecker+Valid, 6738 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:53,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16603 Valid, 6738 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 20:40:53,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22682 states. [2022-07-13 20:40:54,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22682 to 13305. [2022-07-13 20:40:54,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13305 states, 13303 states have (on average 1.3649552732466361) internal successors, (18158), 13304 states have internal predecessors, (18158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:54,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13305 states to 13305 states and 18158 transitions. [2022-07-13 20:40:54,794 INFO L78 Accepts]: Start accepts. Automaton has 13305 states and 18158 transitions. Word has length 67 [2022-07-13 20:40:54,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:54,794 INFO L495 AbstractCegarLoop]: Abstraction has 13305 states and 18158 transitions. [2022-07-13 20:40:54,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.222222222222221) internal successors, (184), 18 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:54,794 INFO L276 IsEmpty]: Start isEmpty. Operand 13305 states and 18158 transitions. [2022-07-13 20:40:54,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:40:54,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:54,796 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:40:54,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 20:40:55,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-13 20:40:55,020 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:55,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:55,020 INFO L85 PathProgramCache]: Analyzing trace with hash 620602156, now seen corresponding path program 1 times [2022-07-13 20:40:55,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:55,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679085270] [2022-07-13 20:40:55,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:55,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:55,157 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:40:55,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:55,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679085270] [2022-07-13 20:40:55,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679085270] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:40:55,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097487712] [2022-07-13 20:40:55,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:55,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:40:55,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:40:55,164 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:40:55,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 20:40:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:55,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-13 20:40:55,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:40:55,771 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:40:55,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:40:56,218 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:40:56,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097487712] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 20:40:56,218 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 20:40:56,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-07-13 20:40:56,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331728456] [2022-07-13 20:40:56,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 20:40:56,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-13 20:40:56,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:56,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-13 20:40:56,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2022-07-13 20:40:56,220 INFO L87 Difference]: Start difference. First operand 13305 states and 18158 transitions. Second operand has 25 states, 25 states have (on average 6.88) internal successors, (172), 24 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:41:12,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:41:12,231 INFO L93 Difference]: Finished difference Result 132700 states and 174099 transitions. [2022-07-13 20:41:12,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-07-13 20:41:12,232 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.88) internal successors, (172), 24 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-13 20:41:12,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:41:12,518 INFO L225 Difference]: With dead ends: 132700 [2022-07-13 20:41:12,519 INFO L226 Difference]: Without dead ends: 122515 [2022-07-13 20:41:12,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8692 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=3558, Invalid=20934, Unknown=0, NotChecked=0, Total=24492 [2022-07-13 20:41:12,566 INFO L413 NwaCegarLoop]: 1622 mSDtfsCounter, 18365 mSDsluCounter, 7499 mSDsCounter, 0 mSdLazyCounter, 2065 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18365 SdHoareTripleChecker+Valid, 9121 SdHoareTripleChecker+Invalid, 2394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 2065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 20:41:12,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18365 Valid, 9121 Invalid, 2394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 2065 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 20:41:12,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122515 states. [2022-07-13 20:41:18,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122515 to 54762. [2022-07-13 20:41:18,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54762 states, 54760 states have (on average 1.3195945945945946) internal successors, (72261), 54761 states have internal predecessors, (72261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:41:18,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54762 states to 54762 states and 72261 transitions. [2022-07-13 20:41:18,813 INFO L78 Accepts]: Start accepts. Automaton has 54762 states and 72261 transitions. Word has length 68 [2022-07-13 20:41:18,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:41:18,813 INFO L495 AbstractCegarLoop]: Abstraction has 54762 states and 72261 transitions. [2022-07-13 20:41:18,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.88) internal successors, (172), 24 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:41:18,814 INFO L276 IsEmpty]: Start isEmpty. Operand 54762 states and 72261 transitions. [2022-07-13 20:41:18,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:41:18,816 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:41:18,816 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:41:18,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 20:41:19,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-13 20:41:19,032 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:41:19,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:41:19,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1702537876, now seen corresponding path program 1 times [2022-07-13 20:41:19,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:41:19,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457968760] [2022-07-13 20:41:19,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:41:19,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:41:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:41:19,079 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:41:19,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:41:19,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457968760] [2022-07-13 20:41:19,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457968760] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:41:19,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:41:19,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:41:19,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277449240] [2022-07-13 20:41:19,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:41:19,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:41:19,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:41:19,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:41:19,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:41:19,082 INFO L87 Difference]: Start difference. First operand 54762 states and 72261 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:41:22,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:41:22,607 INFO L93 Difference]: Finished difference Result 79200 states and 103804 transitions. [2022-07-13 20:41:22,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:41:22,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-13 20:41:22,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:41:22,653 INFO L225 Difference]: With dead ends: 79200 [2022-07-13 20:41:22,654 INFO L226 Difference]: Without dead ends: 32120 [2022-07-13 20:41:22,694 INFO L412 NwaCegarLoop]: 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 [2022-07-13 20:41:22,695 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 26 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3030 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:41:22,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3030 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:41:22,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32120 states. [2022-07-13 20:41:25,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32120 to 31692. [2022-07-13 20:41:25,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31692 states, 31690 states have (on average 1.2890186178605239) internal successors, (40849), 31691 states have internal predecessors, (40849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:41:25,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31692 states to 31692 states and 40849 transitions. [2022-07-13 20:41:25,669 INFO L78 Accepts]: Start accepts. Automaton has 31692 states and 40849 transitions. Word has length 68 [2022-07-13 20:41:25,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:41:25,669 INFO L495 AbstractCegarLoop]: Abstraction has 31692 states and 40849 transitions. [2022-07-13 20:41:25,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:41:25,670 INFO L276 IsEmpty]: Start isEmpty. Operand 31692 states and 40849 transitions. [2022-07-13 20:41:25,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:41:25,672 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:41:25,672 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:41:25,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 20:41:25,672 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:41:25,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:41:25,673 INFO L85 PathProgramCache]: Analyzing trace with hash 455030260, now seen corresponding path program 1 times [2022-07-13 20:41:25,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:41:25,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418756913] [2022-07-13 20:41:25,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:41:25,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:41:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:41:25,703 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:41:25,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:41:25,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418756913] [2022-07-13 20:41:25,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418756913] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:41:25,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:41:25,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:41:25,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956930002] [2022-07-13 20:41:25,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:41:25,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:41:25,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:41:25,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:41:25,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:41:25,705 INFO L87 Difference]: Start difference. First operand 31692 states and 40849 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:41:27,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:41:27,766 INFO L93 Difference]: Finished difference Result 47678 states and 61063 transitions. [2022-07-13 20:41:27,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:41:27,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-13 20:41:27,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:41:27,796 INFO L225 Difference]: With dead ends: 47678 [2022-07-13 20:41:27,796 INFO L226 Difference]: Without dead ends: 21614 [2022-07-13 20:41:27,817 INFO L412 NwaCegarLoop]: 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 [2022-07-13 20:41:27,819 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 20 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 3021 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:41:27,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 3021 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:41:27,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21614 states. [2022-07-13 20:41:29,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21614 to 21612. [2022-07-13 20:41:29,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21612 states, 21610 states have (on average 1.2683017121702915) internal successors, (27408), 21611 states have internal predecessors, (27408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:41:29,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21612 states to 21612 states and 27408 transitions. [2022-07-13 20:41:29,763 INFO L78 Accepts]: Start accepts. Automaton has 21612 states and 27408 transitions. Word has length 68 [2022-07-13 20:41:29,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:41:29,764 INFO L495 AbstractCegarLoop]: Abstraction has 21612 states and 27408 transitions. [2022-07-13 20:41:29,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:41:29,764 INFO L276 IsEmpty]: Start isEmpty. Operand 21612 states and 27408 transitions. [2022-07-13 20:41:29,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:41:29,765 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:41:29,766 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:41:29,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 20:41:29,766 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:41:29,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:41:29,766 INFO L85 PathProgramCache]: Analyzing trace with hash 530169440, now seen corresponding path program 1 times [2022-07-13 20:41:29,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:41:29,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588611025] [2022-07-13 20:41:29,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:41:29,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:41:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:41:29,812 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 20:41:29,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:41:29,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588611025] [2022-07-13 20:41:29,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588611025] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:41:29,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:41:29,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:41:29,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913383032] [2022-07-13 20:41:29,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:41:29,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:41:29,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:41:29,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:41:29,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:41:29,816 INFO L87 Difference]: Start difference. First operand 21612 states and 27408 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:41:30,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:41:30,903 INFO L93 Difference]: Finished difference Result 31423 states and 39772 transitions. [2022-07-13 20:41:30,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:41:30,907 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-13 20:41:30,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:41:30,920 INFO L225 Difference]: With dead ends: 31423 [2022-07-13 20:41:30,920 INFO L226 Difference]: Without dead ends: 12176 [2022-07-13 20:41:30,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-13 20:41:30,935 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 4507 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4507 SdHoareTripleChecker+Valid, 2968 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:41:30,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4507 Valid, 2968 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:41:30,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12176 states. [2022-07-13 20:41:31,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12176 to 12176. [2022-07-13 20:41:31,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12176 states, 12174 states have (on average 1.2839658288155085) internal successors, (15631), 12175 states have internal predecessors, (15631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:41:31,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12176 states to 12176 states and 15631 transitions. [2022-07-13 20:41:31,916 INFO L78 Accepts]: Start accepts. Automaton has 12176 states and 15631 transitions. Word has length 68 [2022-07-13 20:41:31,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:41:31,916 INFO L495 AbstractCegarLoop]: Abstraction has 12176 states and 15631 transitions. [2022-07-13 20:41:31,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:41:31,916 INFO L276 IsEmpty]: Start isEmpty. Operand 12176 states and 15631 transitions. [2022-07-13 20:41:31,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:41:31,917 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:41:31,917 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:41:31,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 20:41:31,917 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:41:31,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:41:31,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1360814688, now seen corresponding path program 1 times [2022-07-13 20:41:31,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:41:31,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246964609] [2022-07-13 20:41:31,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:41:31,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:41:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:41:31,968 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 20:41:31,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:41:31,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246964609] [2022-07-13 20:41:31,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246964609] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:41:31,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:41:31,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:41:31,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802063756] [2022-07-13 20:41:31,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:41:31,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:41:31,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:41:31,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:41:31,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:41:31,973 INFO L87 Difference]: Start difference. First operand 12176 states and 15631 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:41:32,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:41:32,897 INFO L93 Difference]: Finished difference Result 19465 states and 24642 transitions. [2022-07-13 20:41:32,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:41:32,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-13 20:41:32,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:41:32,909 INFO L225 Difference]: With dead ends: 19465 [2022-07-13 20:41:32,909 INFO L226 Difference]: Without dead ends: 9664 [2022-07-13 20:41:32,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-13 20:41:32,917 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 4513 mSDsluCounter, 1469 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4513 SdHoareTripleChecker+Valid, 2962 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:41:32,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4513 Valid, 2962 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:41:32,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9664 states. [2022-07-13 20:41:33,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9664 to 9664. [2022-07-13 20:41:33,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9664 states, 9662 states have (on average 1.2819292072034776) internal successors, (12386), 9663 states have internal predecessors, (12386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:41:33,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9664 states to 9664 states and 12386 transitions. [2022-07-13 20:41:33,719 INFO L78 Accepts]: Start accepts. Automaton has 9664 states and 12386 transitions. Word has length 68 [2022-07-13 20:41:33,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:41:33,719 INFO L495 AbstractCegarLoop]: Abstraction has 9664 states and 12386 transitions. [2022-07-13 20:41:33,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:41:33,719 INFO L276 IsEmpty]: Start isEmpty. Operand 9664 states and 12386 transitions. [2022-07-13 20:41:33,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:41:33,720 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:41:33,720 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:41:33,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 20:41:33,721 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:41:33,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:41:33,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1355942016, now seen corresponding path program 1 times [2022-07-13 20:41:33,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:41:33,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797790426] [2022-07-13 20:41:33,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:41:33,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:41:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:41:33,761 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 20:41:33,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:41:33,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797790426] [2022-07-13 20:41:33,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797790426] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:41:33,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:41:33,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:41:33,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106725595] [2022-07-13 20:41:33,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:41:33,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:41:33,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:41:33,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:41:33,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:41:33,763 INFO L87 Difference]: Start difference. First operand 9664 states and 12386 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:41:34,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:41:34,961 INFO L93 Difference]: Finished difference Result 20973 states and 26287 transitions. [2022-07-13 20:41:34,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:41:34,962 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-13 20:41:34,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:41:34,975 INFO L225 Difference]: With dead ends: 20973 [2022-07-13 20:41:34,975 INFO L226 Difference]: Without dead ends: 13623 [2022-07-13 20:41:34,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-13 20:41:34,984 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 4690 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4690 SdHoareTripleChecker+Valid, 3000 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:41:34,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4690 Valid, 3000 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 20:41:34,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13623 states. [2022-07-13 20:41:36,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13623 to 12757. [2022-07-13 20:41:36,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12757 states, 12755 states have (on average 1.2619364954919638) internal successors, (16096), 12756 states have internal predecessors, (16096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:41:36,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12757 states to 12757 states and 16096 transitions. [2022-07-13 20:41:36,040 INFO L78 Accepts]: Start accepts. Automaton has 12757 states and 16096 transitions. Word has length 68 [2022-07-13 20:41:36,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:41:36,040 INFO L495 AbstractCegarLoop]: Abstraction has 12757 states and 16096 transitions. [2022-07-13 20:41:36,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:41:36,040 INFO L276 IsEmpty]: Start isEmpty. Operand 12757 states and 16096 transitions. [2022-07-13 20:41:36,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-13 20:41:36,041 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:41:36,041 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:41:36,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 20:41:36,042 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:41:36,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:41:36,042 INFO L85 PathProgramCache]: Analyzing trace with hash -576881103, now seen corresponding path program 1 times [2022-07-13 20:41:36,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:41:36,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248506652] [2022-07-13 20:41:36,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:41:36,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:41:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:41:36,331 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:41:36,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:41:36,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248506652] [2022-07-13 20:41:36,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248506652] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:41:36,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801676137] [2022-07-13 20:41:36,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:41:36,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:41:36,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:41:36,333 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:41:36,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 20:41:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:41:36,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-13 20:41:36,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:41:37,783 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:41:37,784 INFO L328 TraceCheckSpWp]: Computing backward predicates...