./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.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.ufo.UNBOUNDED.pals+Problem12_label08.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 5a9891cd4c5f04616b7fa480ff51a2b34c717470141ef1b888630cca6069f53e --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 20:44:37,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 20:44:37,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 20:44:37,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 20:44:37,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 20:44:37,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 20:44:37,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 20:44:37,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 20:44:37,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 20:44:37,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 20:44:37,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 20:44:37,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 20:44:37,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 20:44:37,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 20:44:37,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 20:44:37,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 20:44:37,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 20:44:37,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 20:44:37,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 20:44:37,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 20:44:37,241 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 20:44:37,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 20:44:37,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 20:44:37,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 20:44:37,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 20:44:37,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 20:44:37,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 20:44:37,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 20:44:37,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 20:44:37,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 20:44:37,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 20:44:37,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 20:44:37,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 20:44:37,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 20:44:37,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 20:44:37,255 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 20:44:37,255 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 20:44:37,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 20:44:37,256 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 20:44:37,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 20:44:37,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 20:44:37,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 20:44:37,259 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 20:44:37,287 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 20:44:37,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 20:44:37,288 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 20:44:37,288 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 20:44:37,288 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 20:44:37,289 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 20:44:37,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 20:44:37,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 20:44:37,289 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 20:44:37,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 20:44:37,290 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 20:44:37,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 20:44:37,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 20:44:37,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 20:44:37,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 20:44:37,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 20:44:37,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 20:44:37,292 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 20:44:37,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 20:44:37,292 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 20:44:37,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 20:44:37,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 20:44:37,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 20:44:37,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 20:44:37,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:44:37,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 20:44:37,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 20:44:37,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 20:44:37,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 20:44:37,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 20:44:37,294 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 20:44:37,294 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 20:44:37,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 20:44:37,295 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a9891cd4c5f04616b7fa480ff51a2b34c717470141ef1b888630cca6069f53e [2022-07-13 20:44:37,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 20:44:37,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 20:44:37,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 20:44:37,593 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 20:44:37,594 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 20:44:37,595 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.c [2022-07-13 20:44:37,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4fdcf737/f5f56009488a4c88bd9acc0fc2f1a67d/FLAG775a6c668 [2022-07-13 20:44:38,318 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 20:44:38,319 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.c [2022-07-13 20:44:38,347 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4fdcf737/f5f56009488a4c88bd9acc0fc2f1a67d/FLAG775a6c668 [2022-07-13 20:44:38,453 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4fdcf737/f5f56009488a4c88bd9acc0fc2f1a67d [2022-07-13 20:44:38,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 20:44:38,457 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 20:44:38,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 20:44:38,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 20:44:38,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 20:44:38,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:44:38" (1/1) ... [2022-07-13 20:44:38,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3250643e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:44:38, skipping insertion in model container [2022-07-13 20:44:38,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:44:38" (1/1) ... [2022-07-13 20:44:38,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 20:44:38,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 20:44:38,836 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.ufo.UNBOUNDED.pals+Problem12_label08.c[6450,6463] [2022-07-13 20:44:38,874 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.ufo.UNBOUNDED.pals+Problem12_label08.c[9957,9970] [2022-07-13 20:44:39,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:44:39,546 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 20:44:39,581 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.ufo.UNBOUNDED.pals+Problem12_label08.c[6450,6463] [2022-07-13 20:44:39,594 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.ufo.UNBOUNDED.pals+Problem12_label08.c[9957,9970] [2022-07-13 20:44:39,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:44:40,002 INFO L208 MainTranslator]: Completed translation [2022-07-13 20:44:40,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:44:40 WrapperNode [2022-07-13 20:44:40,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 20:44:40,004 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 20:44:40,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 20:44:40,005 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 20:44:40,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:44:40" (1/1) ... [2022-07-13 20:44:40,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:44:40" (1/1) ... [2022-07-13 20:44:40,349 INFO L137 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4976 [2022-07-13 20:44:40,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 20:44:40,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 20:44:40,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 20:44:40,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 20:44:40,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:44:40" (1/1) ... [2022-07-13 20:44:40,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:44:40" (1/1) ... [2022-07-13 20:44:40,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:44:40" (1/1) ... [2022-07-13 20:44:40,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:44:40" (1/1) ... [2022-07-13 20:44:40,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:44:40" (1/1) ... [2022-07-13 20:44:40,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:44:40" (1/1) ... [2022-07-13 20:44:40,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:44:40" (1/1) ... [2022-07-13 20:44:40,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 20:44:40,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 20:44:40,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 20:44:40,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 20:44:40,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:44:40" (1/1) ... [2022-07-13 20:44:40,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:44:40,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:44:40,893 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 20:44:40,942 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 20:44:40,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 20:44:41,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 20:44:41,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 20:44:41,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 20:44:41,143 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 20:44:41,144 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 20:44:44,599 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 20:44:44,618 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 20:44:44,618 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 20:44:44,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:44:44 BoogieIcfgContainer [2022-07-13 20:44:44,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 20:44:44,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 20:44:44,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 20:44:44,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 20:44:44,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 08:44:38" (1/3) ... [2022-07-13 20:44:44,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34fa0ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:44:44, skipping insertion in model container [2022-07-13 20:44:44,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:44:40" (2/3) ... [2022-07-13 20:44:44,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34fa0ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:44:44, skipping insertion in model container [2022-07-13 20:44:44,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:44:44" (3/3) ... [2022-07-13 20:44:44,631 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.c [2022-07-13 20:44:44,643 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 20:44:44,644 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 20:44:44,703 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 20:44:44,708 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@562d954b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2ab6cd5e [2022-07-13 20:44:44,709 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 20:44:44,716 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 20:44:44,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-13 20:44:44,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:44:44,723 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 20:44:44,724 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:44:44,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:44:44,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1601385972, now seen corresponding path program 1 times [2022-07-13 20:44:44,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:44:44,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510106648] [2022-07-13 20:44:44,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:44:44,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:44:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:44:44,906 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 20:44:44,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:44:44,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510106648] [2022-07-13 20:44:44,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510106648] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:44:44,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:44:44,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 20:44:44,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122107068] [2022-07-13 20:44:44,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:44:44,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 20:44:44,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:44:44,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 20:44:44,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 20:44:44,938 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 20:44:44,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:44:44,997 INFO L93 Difference]: Finished difference Result 1736 states and 3296 transitions. [2022-07-13 20:44:45,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 20:44:45,003 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 20:44:45,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:44:45,019 INFO L225 Difference]: With dead ends: 1736 [2022-07-13 20:44:45,020 INFO L226 Difference]: Without dead ends: 814 [2022-07-13 20:44:45,026 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 20:44:45,029 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 20:44:45,030 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 20:44:45,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-13 20:44:45,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 814. [2022-07-13 20:44:45,106 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 20:44:45,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1536 transitions. [2022-07-13 20:44:45,110 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1536 transitions. Word has length 26 [2022-07-13 20:44:45,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:44:45,111 INFO L495 AbstractCegarLoop]: Abstraction has 814 states and 1536 transitions. [2022-07-13 20:44:45,111 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 20:44:45,111 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1536 transitions. [2022-07-13 20:44:45,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-13 20:44:45,112 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:44:45,112 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 20:44:45,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 20:44:45,113 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:44:45,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:44:45,114 INFO L85 PathProgramCache]: Analyzing trace with hash 783737522, now seen corresponding path program 1 times [2022-07-13 20:44:45,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:44:45,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297021936] [2022-07-13 20:44:45,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:44:45,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:44:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:44:45,214 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 20:44:45,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:44:45,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297021936] [2022-07-13 20:44:45,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297021936] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:44:45,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:44:45,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:44:45,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149128879] [2022-07-13 20:44:45,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:44:45,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:44:45,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:44:45,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:44:45,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:44:45,224 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 20:44:45,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:44:45,453 INFO L93 Difference]: Finished difference Result 856 states and 1599 transitions. [2022-07-13 20:44:45,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 20:44:45,458 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 20:44:45,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:44:45,463 INFO L225 Difference]: With dead ends: 856 [2022-07-13 20:44:45,463 INFO L226 Difference]: Without dead ends: 814 [2022-07-13 20:44:45,464 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 20:44:45,465 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, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:44:45,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6117 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 20:44:45,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-13 20:44:45,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 814. [2022-07-13 20:44:45,493 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 20:44:45,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1520 transitions. [2022-07-13 20:44:45,497 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1520 transitions. Word has length 26 [2022-07-13 20:44:45,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:44:45,497 INFO L495 AbstractCegarLoop]: Abstraction has 814 states and 1520 transitions. [2022-07-13 20:44:45,497 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 20:44:45,497 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1520 transitions. [2022-07-13 20:44:45,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-13 20:44:45,498 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:44:45,499 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] [2022-07-13 20:44:45,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 20:44:45,499 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:44:45,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:44:45,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1008444205, now seen corresponding path program 1 times [2022-07-13 20:44:45,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:44:45,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652261440] [2022-07-13 20:44:45,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:44:45,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:44:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:44:45,549 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 20:44:45,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:44:45,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652261440] [2022-07-13 20:44:45,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652261440] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:44:45,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:44:45,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 20:44:45,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576251715] [2022-07-13 20:44:45,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:44:45,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:44:45,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:44:45,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:44:45,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:44:45,553 INFO L87 Difference]: Start difference. First operand 814 states and 1520 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 20:44:48,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:44:48,817 INFO L93 Difference]: Finished difference Result 2318 states and 4393 transitions. [2022-07-13 20:44:48,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:44:48,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-07-13 20:44:48,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:44:48,824 INFO L225 Difference]: With dead ends: 2318 [2022-07-13 20:44:48,825 INFO L226 Difference]: Without dead ends: 1565 [2022-07-13 20:44:48,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 20:44:48,833 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 869 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2274 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 2865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-13 20:44:48,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 509 Invalid, 2865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2274 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-13 20:44:48,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2022-07-13 20:44:48,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1565. [2022-07-13 20:44:48,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1563 states have (on average 1.6295585412667946) internal successors, (2547), 1564 states have internal predecessors, (2547), 0 states have call successors, (0), 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 20:44:48,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2547 transitions. [2022-07-13 20:44:48,872 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2547 transitions. Word has length 30 [2022-07-13 20:44:48,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:44:48,873 INFO L495 AbstractCegarLoop]: Abstraction has 1565 states and 2547 transitions. [2022-07-13 20:44:48,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 20:44:48,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2547 transitions. [2022-07-13 20:44:48,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-13 20:44:48,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:44:48,875 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 20:44:48,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 20:44:48,876 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:44:48,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:44:48,879 INFO L85 PathProgramCache]: Analyzing trace with hash -698732182, now seen corresponding path program 1 times [2022-07-13 20:44:48,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:44:48,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22615642] [2022-07-13 20:44:48,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:44:48,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:44:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:44:48,963 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 20:44:48,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:44:48,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22615642] [2022-07-13 20:44:48,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22615642] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:44:48,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:44:48,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:44:48,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763660322] [2022-07-13 20:44:48,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:44:48,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:44:48,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:44:48,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:44:48,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:44:48,966 INFO L87 Difference]: Start difference. First operand 1565 states and 2547 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 20:44:48,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:44:48,998 INFO L93 Difference]: Finished difference Result 1635 states and 2655 transitions. [2022-07-13 20:44:48,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:44:48,998 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 20:44:48,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:44:49,004 INFO L225 Difference]: With dead ends: 1635 [2022-07-13 20:44:49,005 INFO L226 Difference]: Without dead ends: 1597 [2022-07-13 20:44:49,005 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 20:44:49,009 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 20:44:49,009 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 20:44:49,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1597 states. [2022-07-13 20:44:49,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1597 to 1595. [2022-07-13 20:44:49,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1593 states have (on average 1.628374136848713) internal successors, (2594), 1594 states have internal predecessors, (2594), 0 states have call successors, (0), 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 20:44:49,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2594 transitions. [2022-07-13 20:44:49,040 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2594 transitions. Word has length 41 [2022-07-13 20:44:49,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:44:49,041 INFO L495 AbstractCegarLoop]: Abstraction has 1595 states and 2594 transitions. [2022-07-13 20:44:49,041 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 20:44:49,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2594 transitions. [2022-07-13 20:44:49,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-13 20:44:49,042 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:44:49,043 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 20:44:49,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 20:44:49,043 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:44:49,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:44:49,044 INFO L85 PathProgramCache]: Analyzing trace with hash -360939040, now seen corresponding path program 1 times [2022-07-13 20:44:49,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:44:49,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025455418] [2022-07-13 20:44:49,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:44:49,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:44:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:44:49,100 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 20:44:49,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:44:49,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025455418] [2022-07-13 20:44:49,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025455418] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:44:49,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:44:49,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:44:49,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044560367] [2022-07-13 20:44:49,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:44:49,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:44:49,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:44:49,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:44:49,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:44:49,102 INFO L87 Difference]: Start difference. First operand 1595 states and 2594 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 20:44:49,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:44:49,136 INFO L93 Difference]: Finished difference Result 1719 states and 2786 transitions. [2022-07-13 20:44:49,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:44:49,137 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 20:44:49,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:44:49,143 INFO L225 Difference]: With dead ends: 1719 [2022-07-13 20:44:49,143 INFO L226 Difference]: Without dead ends: 1651 [2022-07-13 20:44:49,144 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 20:44:49,145 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 20:44:49,146 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 20:44:49,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2022-07-13 20:44:49,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1649. [2022-07-13 20:44:49,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1647 states have (on average 1.6253794778384942) internal successors, (2677), 1648 states have internal predecessors, (2677), 0 states have call successors, (0), 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 20:44:49,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2677 transitions. [2022-07-13 20:44:49,180 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2677 transitions. Word has length 41 [2022-07-13 20:44:49,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:44:49,184 INFO L495 AbstractCegarLoop]: Abstraction has 1649 states and 2677 transitions. [2022-07-13 20:44:49,185 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 20:44:49,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2677 transitions. [2022-07-13 20:44:49,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-13 20:44:49,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:44:49,191 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 20:44:49,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 20:44:49,192 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:44:49,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:44:49,196 INFO L85 PathProgramCache]: Analyzing trace with hash 857046358, now seen corresponding path program 1 times [2022-07-13 20:44:49,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:44:49,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020308050] [2022-07-13 20:44:49,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:44:49,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:44:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:44:49,269 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 20:44:49,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:44:49,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020308050] [2022-07-13 20:44:49,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020308050] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:44:49,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:44:49,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:44:49,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392622775] [2022-07-13 20:44:49,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:44:49,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:44:49,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:44:49,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:44:49,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:44:49,272 INFO L87 Difference]: Start difference. First operand 1649 states and 2677 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 20:44:49,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:44:49,390 INFO L93 Difference]: Finished difference Result 2381 states and 3811 transitions. [2022-07-13 20:44:49,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 20:44:49,390 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 20:44:49,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:44:49,400 INFO L225 Difference]: With dead ends: 2381 [2022-07-13 20:44:49,401 INFO L226 Difference]: Without dead ends: 2259 [2022-07-13 20:44:49,403 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 20:44:49,407 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 20:44:49,407 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 20:44:49,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2259 states. [2022-07-13 20:44:49,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2259 to 1769. [2022-07-13 20:44:49,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1769 states, 1767 states have (on average 1.6168647425014149) internal successors, (2857), 1768 states have internal predecessors, (2857), 0 states have call successors, (0), 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 20:44:49,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 2857 transitions. [2022-07-13 20:44:49,453 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 2857 transitions. Word has length 41 [2022-07-13 20:44:49,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:44:49,454 INFO L495 AbstractCegarLoop]: Abstraction has 1769 states and 2857 transitions. [2022-07-13 20:44:49,454 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 20:44:49,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 2857 transitions. [2022-07-13 20:44:49,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-13 20:44:49,455 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:44:49,455 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 20:44:49,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 20:44:49,456 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:44:49,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:44:49,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1867096070, now seen corresponding path program 1 times [2022-07-13 20:44:49,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:44:49,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577625118] [2022-07-13 20:44:49,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:44:49,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:44:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:44:49,526 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 20:44:49,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:44:49,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577625118] [2022-07-13 20:44:49,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577625118] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:44:49,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:44:49,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:44:49,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405447579] [2022-07-13 20:44:49,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:44:49,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:44:49,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:44:49,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:44:49,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:44:49,529 INFO L87 Difference]: Start difference. First operand 1769 states and 2857 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 20:44:49,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:44:49,583 INFO L93 Difference]: Finished difference Result 2209 states and 3519 transitions. [2022-07-13 20:44:49,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:44:49,584 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 20:44:49,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:44:49,591 INFO L225 Difference]: With dead ends: 2209 [2022-07-13 20:44:49,592 INFO L226 Difference]: Without dead ends: 1967 [2022-07-13 20:44:49,594 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 20:44:49,595 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 20:44:49,595 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 20:44:49,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2022-07-13 20:44:49,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1957. [2022-07-13 20:44:49,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1955 states have (on average 1.5964194373401535) internal successors, (3121), 1956 states have internal predecessors, (3121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:44:49,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3121 transitions. [2022-07-13 20:44:49,685 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3121 transitions. Word has length 43 [2022-07-13 20:44:49,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:44:49,687 INFO L495 AbstractCegarLoop]: Abstraction has 1957 states and 3121 transitions. [2022-07-13 20:44:49,687 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 20:44:49,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3121 transitions. [2022-07-13 20:44:49,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-13 20:44:49,688 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:44:49,689 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 20:44:49,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 20:44:49,689 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:44:49,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:44:49,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1933589582, now seen corresponding path program 1 times [2022-07-13 20:44:49,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:44:49,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262890910] [2022-07-13 20:44:49,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:44:49,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:44:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:44:49,815 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 20:44:49,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:44:49,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262890910] [2022-07-13 20:44:49,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262890910] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:44:49,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:44:49,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:44:49,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391914580] [2022-07-13 20:44:49,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:44:49,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:44:49,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:44:49,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:44:49,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:44:49,819 INFO L87 Difference]: Start difference. First operand 1957 states and 3121 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 20:44:49,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:44:49,918 INFO L93 Difference]: Finished difference Result 2389 states and 3755 transitions. [2022-07-13 20:44:49,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 20:44:49,919 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 20:44:49,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:44:49,926 INFO L225 Difference]: With dead ends: 2389 [2022-07-13 20:44:49,926 INFO L226 Difference]: Without dead ends: 1959 [2022-07-13 20:44:49,928 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 20:44:49,928 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 20:44:49,929 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 20:44:49,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2022-07-13 20:44:49,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1957. [2022-07-13 20:44:49,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1955 states have (on average 1.5923273657289003) internal successors, (3113), 1956 states have internal predecessors, (3113), 0 states have call successors, (0), 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 20:44:49,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3113 transitions. [2022-07-13 20:44:49,988 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3113 transitions. Word has length 43 [2022-07-13 20:44:49,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:44:49,989 INFO L495 AbstractCegarLoop]: Abstraction has 1957 states and 3113 transitions. [2022-07-13 20:44:49,989 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 20:44:49,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3113 transitions. [2022-07-13 20:44:49,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-13 20:44:49,991 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:44:49,992 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 20:44:49,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 20:44:49,993 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:44:49,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:44:49,993 INFO L85 PathProgramCache]: Analyzing trace with hash -602988295, now seen corresponding path program 1 times [2022-07-13 20:44:49,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:44:49,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679288477] [2022-07-13 20:44:49,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:44:49,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:44:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:44:50,075 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 20:44:50,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:44:50,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679288477] [2022-07-13 20:44:50,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679288477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:44:50,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:44:50,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 20:44:50,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131556639] [2022-07-13 20:44:50,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:44:50,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 20:44:50,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:44:50,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 20:44:50,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:44:50,079 INFO L87 Difference]: Start difference. First operand 1957 states and 3113 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 20:44:50,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:44:50,256 INFO L93 Difference]: Finished difference Result 2291 states and 3585 transitions. [2022-07-13 20:44:50,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 20:44:50,257 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 20:44:50,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:44:50,266 INFO L225 Difference]: With dead ends: 2291 [2022-07-13 20:44:50,266 INFO L226 Difference]: Without dead ends: 2289 [2022-07-13 20:44:50,267 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 20:44:50,269 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 20:44:50,270 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 20:44:50,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2022-07-13 20:44:50,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 1981. [2022-07-13 20:44:50,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1981 states, 1979 states have (on average 1.583122789287519) internal successors, (3133), 1980 states have internal predecessors, (3133), 0 states have call successors, (0), 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 20:44:50,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3133 transitions. [2022-07-13 20:44:50,337 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3133 transitions. Word has length 44 [2022-07-13 20:44:50,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:44:50,338 INFO L495 AbstractCegarLoop]: Abstraction has 1981 states and 3133 transitions. [2022-07-13 20:44:50,338 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 20:44:50,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3133 transitions. [2022-07-13 20:44:50,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 20:44:50,339 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:44:50,339 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 20:44:50,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 20:44:50,339 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:44:50,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:44:50,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1900121563, now seen corresponding path program 1 times [2022-07-13 20:44:50,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:44:50,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491468088] [2022-07-13 20:44:50,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:44:50,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:44:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:44:50,384 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 20:44:50,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:44:50,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491468088] [2022-07-13 20:44:50,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491468088] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:44:50,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:44:50,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:44:50,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170768247] [2022-07-13 20:44:50,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:44:50,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:44:50,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:44:50,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:44:50,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:44:50,391 INFO L87 Difference]: Start difference. First operand 1981 states and 3133 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 20:44:50,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:44:50,460 INFO L93 Difference]: Finished difference Result 2452 states and 3811 transitions. [2022-07-13 20:44:50,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:44:50,461 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 20:44:50,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:44:50,468 INFO L225 Difference]: With dead ends: 2452 [2022-07-13 20:44:50,469 INFO L226 Difference]: Without dead ends: 2185 [2022-07-13 20:44:50,470 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 20:44:50,470 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 20:44:50,471 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 20:44:50,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2185 states. [2022-07-13 20:44:50,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2185 to 2183. [2022-07-13 20:44:50,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2183 states, 2181 states have (on average 1.5639614855570838) internal successors, (3411), 2182 states have internal predecessors, (3411), 0 states have call successors, (0), 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 20:44:50,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 3411 transitions. [2022-07-13 20:44:50,560 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 3411 transitions. Word has length 45 [2022-07-13 20:44:50,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:44:50,561 INFO L495 AbstractCegarLoop]: Abstraction has 2183 states and 3411 transitions. [2022-07-13 20:44:50,561 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 20:44:50,561 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 3411 transitions. [2022-07-13 20:44:50,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-13 20:44:50,562 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:44:50,562 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 20:44:50,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 20:44:50,563 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:44:50,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:44:50,564 INFO L85 PathProgramCache]: Analyzing trace with hash -393288849, now seen corresponding path program 1 times [2022-07-13 20:44:50,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:44:50,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077293291] [2022-07-13 20:44:50,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:44:50,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:44:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:44:50,656 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 20:44:50,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:44:50,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077293291] [2022-07-13 20:44:50,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077293291] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:44:50,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:44:50,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:44:50,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344460242] [2022-07-13 20:44:50,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:44:50,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:44:50,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:44:50,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:44:50,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:44:50,659 INFO L87 Difference]: Start difference. First operand 2183 states and 3411 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 20:44:50,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:44:50,923 INFO L93 Difference]: Finished difference Result 4287 states and 6363 transitions. [2022-07-13 20:44:50,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 20:44:50,924 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 20:44:50,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:44:50,937 INFO L225 Difference]: With dead ends: 4287 [2022-07-13 20:44:50,938 INFO L226 Difference]: Without dead ends: 3633 [2022-07-13 20:44:50,940 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 20:44:50,941 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 3088 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3088 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:44:50,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3088 Valid, 3191 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:44:50,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3633 states. [2022-07-13 20:44:51,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3633 to 2835. [2022-07-13 20:44:51,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2833 states have (on average 1.524532297917402) internal successors, (4319), 2834 states have internal predecessors, (4319), 0 states have call successors, (0), 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 20:44:51,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 4319 transitions. [2022-07-13 20:44:51,102 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 4319 transitions. Word has length 64 [2022-07-13 20:44:51,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:44:51,102 INFO L495 AbstractCegarLoop]: Abstraction has 2835 states and 4319 transitions. [2022-07-13 20:44:51,102 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 20:44:51,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 4319 transitions. [2022-07-13 20:44:51,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-13 20:44:51,104 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:44:51,104 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 20:44:51,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 20:44:51,104 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:44:51,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:44:51,105 INFO L85 PathProgramCache]: Analyzing trace with hash 2132895631, now seen corresponding path program 1 times [2022-07-13 20:44:51,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:44:51,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344107058] [2022-07-13 20:44:51,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:44:51,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:44:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:44:51,149 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 20:44:51,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:44:51,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344107058] [2022-07-13 20:44:51,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344107058] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:44:51,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:44:51,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:44:51,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083833636] [2022-07-13 20:44:51,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:44:51,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:44:51,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:44:51,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:44:51,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:44:51,152 INFO L87 Difference]: Start difference. First operand 2835 states and 4319 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 20:44:51,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:44:51,417 INFO L93 Difference]: Finished difference Result 4939 states and 7271 transitions. [2022-07-13 20:44:51,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 20:44:51,417 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 20:44:51,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:44:51,433 INFO L225 Difference]: With dead ends: 4939 [2022-07-13 20:44:51,433 INFO L226 Difference]: Without dead ends: 4285 [2022-07-13 20:44:51,436 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 20:44:51,436 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 3082 mSDsluCounter, 1638 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3082 SdHoareTripleChecker+Valid, 3206 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:44:51,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3082 Valid, 3206 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:44:51,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4285 states. [2022-07-13 20:44:51,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4285 to 3815. [2022-07-13 20:44:51,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3815 states, 3813 states have (on average 1.4872803566745345) internal successors, (5671), 3814 states have internal predecessors, (5671), 0 states have call successors, (0), 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 20:44:51,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3815 states to 3815 states and 5671 transitions. [2022-07-13 20:44:51,691 INFO L78 Accepts]: Start accepts. Automaton has 3815 states and 5671 transitions. Word has length 64 [2022-07-13 20:44:51,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:44:51,691 INFO L495 AbstractCegarLoop]: Abstraction has 3815 states and 5671 transitions. [2022-07-13 20:44:51,691 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 20:44:51,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3815 states and 5671 transitions. [2022-07-13 20:44:51,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 20:44:51,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:44:51,693 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 20:44:51,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 20:44:51,694 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:44:51,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:44:51,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1342668761, now seen corresponding path program 1 times [2022-07-13 20:44:51,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:44:51,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358082008] [2022-07-13 20:44:51,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:44:51,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:44:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:44:51,729 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 20:44:51,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:44:51,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358082008] [2022-07-13 20:44:51,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358082008] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:44:51,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:44:51,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:44:51,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466482280] [2022-07-13 20:44:51,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:44:51,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:44:51,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:44:51,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:44:51,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:44:51,731 INFO L87 Difference]: Start difference. First operand 3815 states and 5671 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 20:44:51,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:44:51,872 INFO L93 Difference]: Finished difference Result 5465 states and 7995 transitions. [2022-07-13 20:44:51,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:44:51,872 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 20:44:51,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:44:51,892 INFO L225 Difference]: With dead ends: 5465 [2022-07-13 20:44:51,893 INFO L226 Difference]: Without dead ends: 3179 [2022-07-13 20:44:51,897 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 20:44:51,897 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 20:44:51,898 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 20:44:51,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2022-07-13 20:44:52,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 3177. [2022-07-13 20:44:52,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3177 states, 3175 states have (on average 1.506771653543307) internal successors, (4784), 3176 states have internal predecessors, (4784), 0 states have call successors, (0), 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 20:44:52,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3177 states to 3177 states and 4784 transitions. [2022-07-13 20:44:52,080 INFO L78 Accepts]: Start accepts. Automaton has 3177 states and 4784 transitions. Word has length 66 [2022-07-13 20:44:52,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:44:52,080 INFO L495 AbstractCegarLoop]: Abstraction has 3177 states and 4784 transitions. [2022-07-13 20:44:52,081 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 20:44:52,081 INFO L276 IsEmpty]: Start isEmpty. Operand 3177 states and 4784 transitions. [2022-07-13 20:44:52,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 20:44:52,082 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:44:52,082 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 20:44:52,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 20:44:52,083 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:44:52,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:44:52,083 INFO L85 PathProgramCache]: Analyzing trace with hash -366937100, now seen corresponding path program 1 times [2022-07-13 20:44:52,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:44:52,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57697718] [2022-07-13 20:44:52,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:44:52,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:44:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:44:52,143 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 20:44:52,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:44:52,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57697718] [2022-07-13 20:44:52,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57697718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:44:52,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:44:52,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:44:52,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102745850] [2022-07-13 20:44:52,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:44:52,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:44:52,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:44:52,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:44:52,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:44:52,146 INFO L87 Difference]: Start difference. First operand 3177 states and 4784 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 20:44:52,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:44:52,381 INFO L93 Difference]: Finished difference Result 4577 states and 6756 transitions. [2022-07-13 20:44:52,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 20:44:52,381 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 20:44:52,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:44:52,390 INFO L225 Difference]: With dead ends: 4577 [2022-07-13 20:44:52,390 INFO L226 Difference]: Without dead ends: 4111 [2022-07-13 20:44:52,392 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 20:44:52,393 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 3076 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3076 SdHoareTripleChecker+Valid, 3207 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:44:52,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3076 Valid, 3207 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:44:52,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4111 states. [2022-07-13 20:44:52,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4111 to 3641. [2022-07-13 20:44:52,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3641 states, 3639 states have (on average 1.4927177796097828) internal successors, (5432), 3640 states have internal predecessors, (5432), 0 states have call successors, (0), 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 20:44:52,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3641 states to 3641 states and 5432 transitions. [2022-07-13 20:44:52,616 INFO L78 Accepts]: Start accepts. Automaton has 3641 states and 5432 transitions. Word has length 66 [2022-07-13 20:44:52,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:44:52,616 INFO L495 AbstractCegarLoop]: Abstraction has 3641 states and 5432 transitions. [2022-07-13 20:44:52,616 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 20:44:52,617 INFO L276 IsEmpty]: Start isEmpty. Operand 3641 states and 5432 transitions. [2022-07-13 20:44:52,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 20:44:52,618 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:44:52,618 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 20:44:52,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 20:44:52,618 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:44:52,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:44:52,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1328887140, now seen corresponding path program 1 times [2022-07-13 20:44:52,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:44:52,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054187664] [2022-07-13 20:44:52,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:44:52,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:44:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:44:52,833 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 20:44:52,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:44:52,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054187664] [2022-07-13 20:44:52,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054187664] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:44:52,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862598684] [2022-07-13 20:44:52,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:44:52,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:44:52,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:44:52,840 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 20:44:52,841 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 20:44:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:44:52,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 20:44:52,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:44:53,201 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 20:44:53,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:44:53,363 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 20:44:53,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862598684] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 20:44:53,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 20:44:53,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2022-07-13 20:44:53,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299833193] [2022-07-13 20:44:53,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 20:44:53,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 20:44:53,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:44:53,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 20:44:53,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-07-13 20:44:53,367 INFO L87 Difference]: Start difference. First operand 3641 states and 5432 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 20:44:58,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:44:58,701 INFO L93 Difference]: Finished difference Result 24021 states and 33277 transitions. [2022-07-13 20:44:58,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-07-13 20:44:58,701 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 20:44:58,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:44:58,747 INFO L225 Difference]: With dead ends: 24021 [2022-07-13 20:44:58,748 INFO L226 Difference]: Without dead ends: 21931 [2022-07-13 20:44:58,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4630 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2148, Invalid=10062, Unknown=0, NotChecked=0, Total=12210 [2022-07-13 20:44:58,762 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 15474 mSDsluCounter, 5202 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15474 SdHoareTripleChecker+Valid, 6757 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 20:44:58,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15474 Valid, 6757 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 20:44:58,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21931 states. [2022-07-13 20:44:59,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21931 to 12554. [2022-07-13 20:44:59,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12554 states, 12552 states have (on average 1.3710165710643722) internal successors, (17209), 12553 states have internal predecessors, (17209), 0 states have call successors, (0), 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 20:44:59,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12554 states to 12554 states and 17209 transitions. [2022-07-13 20:44:59,994 INFO L78 Accepts]: Start accepts. Automaton has 12554 states and 17209 transitions. Word has length 67 [2022-07-13 20:44:59,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:44:59,994 INFO L495 AbstractCegarLoop]: Abstraction has 12554 states and 17209 transitions. [2022-07-13 20:44:59,995 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 20:44:59,995 INFO L276 IsEmpty]: Start isEmpty. Operand 12554 states and 17209 transitions. [2022-07-13 20:44:59,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:44:59,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:44:59,997 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 20:45:00,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 20:45:00,220 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 20:45:00,220 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:45:00,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:45:00,221 INFO L85 PathProgramCache]: Analyzing trace with hash 620602156, now seen corresponding path program 1 times [2022-07-13 20:45:00,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:45:00,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490685417] [2022-07-13 20:45:00,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:45:00,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:45:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:45:00,343 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 20:45:00,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:45:00,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490685417] [2022-07-13 20:45:00,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490685417] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:45:00,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971980718] [2022-07-13 20:45:00,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:45:00,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:45:00,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:45:00,346 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 20:45:00,360 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 20:45:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:45:00,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-13 20:45:00,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:45:00,988 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 20:45:00,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:45:01,429 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 20:45:01,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971980718] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 20:45:01,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 20:45:01,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-07-13 20:45:01,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828488019] [2022-07-13 20:45:01,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 20:45:01,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-13 20:45:01,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:45:01,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-13 20:45:01,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2022-07-13 20:45:01,432 INFO L87 Difference]: Start difference. First operand 12554 states and 17209 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 20:45:18,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:45:18,659 INFO L93 Difference]: Finished difference Result 145542 states and 190775 transitions. [2022-07-13 20:45:18,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-07-13 20:45:18,660 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 20:45:18,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:45:19,009 INFO L225 Difference]: With dead ends: 145542 [2022-07-13 20:45:19,009 INFO L226 Difference]: Without dead ends: 135357 [2022-07-13 20:45:19,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8692 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=3558, Invalid=20934, Unknown=0, NotChecked=0, Total=24492 [2022-07-13 20:45:19,074 INFO L413 NwaCegarLoop]: 1622 mSDtfsCounter, 20986 mSDsluCounter, 10459 mSDsCounter, 0 mSdLazyCounter, 2099 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20986 SdHoareTripleChecker+Valid, 12081 SdHoareTripleChecker+Invalid, 2375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 2099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 20:45:19,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20986 Valid, 12081 Invalid, 2375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 2099 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 20:45:19,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135357 states. [2022-07-13 20:45:25,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135357 to 54011. [2022-07-13 20:45:25,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54011 states, 54009 states have (on average 1.3203725305041751) internal successors, (71312), 54010 states have internal predecessors, (71312), 0 states have call successors, (0), 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 20:45:25,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54011 states to 54011 states and 71312 transitions. [2022-07-13 20:45:25,232 INFO L78 Accepts]: Start accepts. Automaton has 54011 states and 71312 transitions. Word has length 68 [2022-07-13 20:45:25,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:45:25,233 INFO L495 AbstractCegarLoop]: Abstraction has 54011 states and 71312 transitions. [2022-07-13 20:45:25,233 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 20:45:25,233 INFO L276 IsEmpty]: Start isEmpty. Operand 54011 states and 71312 transitions. [2022-07-13 20:45:25,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:45:25,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:45:25,241 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 20:45:25,265 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 20:45:25,455 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 20:45:25,456 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:45:25,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:45:25,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1702537876, now seen corresponding path program 1 times [2022-07-13 20:45:25,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:45:25,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657258396] [2022-07-13 20:45:25,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:45:25,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:45:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:45:25,491 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 20:45:25,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:45:25,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657258396] [2022-07-13 20:45:25,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657258396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:45:25,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:45:25,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:45:25,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104080439] [2022-07-13 20:45:25,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:45:25,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:45:25,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:45:25,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:45:25,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:45:25,496 INFO L87 Difference]: Start difference. First operand 54011 states and 71312 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 20:45:28,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:45:28,305 INFO L93 Difference]: Finished difference Result 78449 states and 102855 transitions. [2022-07-13 20:45:28,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:45:28,305 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 20:45:28,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:45:28,360 INFO L225 Difference]: With dead ends: 78449 [2022-07-13 20:45:28,360 INFO L226 Difference]: Without dead ends: 31369 [2022-07-13 20:45:28,402 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 20:45:28,402 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 20:45:28,403 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 20:45:28,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31369 states. [2022-07-13 20:45:31,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31369 to 30941. [2022-07-13 20:45:31,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30941 states, 30939 states have (on average 1.28963444196645) internal successors, (39900), 30940 states have internal predecessors, (39900), 0 states have call successors, (0), 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 20:45:31,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30941 states to 30941 states and 39900 transitions. [2022-07-13 20:45:31,516 INFO L78 Accepts]: Start accepts. Automaton has 30941 states and 39900 transitions. Word has length 68 [2022-07-13 20:45:31,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:45:31,517 INFO L495 AbstractCegarLoop]: Abstraction has 30941 states and 39900 transitions. [2022-07-13 20:45:31,517 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 20:45:31,517 INFO L276 IsEmpty]: Start isEmpty. Operand 30941 states and 39900 transitions. [2022-07-13 20:45:31,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:45:31,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:45:31,520 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 20:45:31,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 20:45:31,520 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:45:31,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:45:31,521 INFO L85 PathProgramCache]: Analyzing trace with hash 455030260, now seen corresponding path program 1 times [2022-07-13 20:45:31,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:45:31,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015155889] [2022-07-13 20:45:31,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:45:31,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:45:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:45:31,574 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 20:45:31,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:45:31,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015155889] [2022-07-13 20:45:31,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015155889] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:45:31,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:45:31,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:45:31,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47156029] [2022-07-13 20:45:31,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:45:31,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:45:31,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:45:31,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:45:31,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:45:31,576 INFO L87 Difference]: Start difference. First operand 30941 states and 39900 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 20:45:33,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:45:33,654 INFO L93 Difference]: Finished difference Result 46927 states and 60114 transitions. [2022-07-13 20:45:33,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:45:33,654 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 20:45:33,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:45:33,686 INFO L225 Difference]: With dead ends: 46927 [2022-07-13 20:45:33,687 INFO L226 Difference]: Without dead ends: 20863 [2022-07-13 20:45:33,715 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 20:45:33,716 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 20:45:33,716 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 20:45:33,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20863 states. [2022-07-13 20:45:35,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20863 to 20861. [2022-07-13 20:45:35,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20861 states, 20859 states have (on average 1.2684692458890647) internal successors, (26459), 20860 states have internal predecessors, (26459), 0 states have call successors, (0), 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 20:45:35,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20861 states to 20861 states and 26459 transitions. [2022-07-13 20:45:35,452 INFO L78 Accepts]: Start accepts. Automaton has 20861 states and 26459 transitions. Word has length 68 [2022-07-13 20:45:35,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:45:35,452 INFO L495 AbstractCegarLoop]: Abstraction has 20861 states and 26459 transitions. [2022-07-13 20:45:35,452 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 20:45:35,452 INFO L276 IsEmpty]: Start isEmpty. Operand 20861 states and 26459 transitions. [2022-07-13 20:45:35,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:45:35,453 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:45:35,454 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 20:45:35,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 20:45:35,454 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:45:35,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:45:35,454 INFO L85 PathProgramCache]: Analyzing trace with hash 530169440, now seen corresponding path program 1 times [2022-07-13 20:45:35,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:45:35,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642920476] [2022-07-13 20:45:35,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:45:35,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:45:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:45:35,500 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 20:45:35,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:45:35,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642920476] [2022-07-13 20:45:35,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642920476] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:45:35,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:45:35,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:45:35,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423484562] [2022-07-13 20:45:35,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:45:35,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:45:35,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:45:35,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:45:35,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:45:35,503 INFO L87 Difference]: Start difference. First operand 20861 states and 26459 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 20:45:37,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:45:37,015 INFO L93 Difference]: Finished difference Result 36624 states and 46184 transitions. [2022-07-13 20:45:37,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:45:37,016 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 20:45:37,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:45:37,039 INFO L225 Difference]: With dead ends: 36624 [2022-07-13 20:45:37,039 INFO L226 Difference]: Without dead ends: 17377 [2022-07-13 20:45:37,056 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 20:45:37,056 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 4553 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4553 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:45:37,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4553 Valid, 2957 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:45:37,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17377 states. [2022-07-13 20:45:38,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17377 to 17377. [2022-07-13 20:45:38,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17377 states, 17375 states have (on average 1.2587625899280575) internal successors, (21871), 17376 states have internal predecessors, (21871), 0 states have call successors, (0), 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 20:45:38,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17377 states to 17377 states and 21871 transitions. [2022-07-13 20:45:38,540 INFO L78 Accepts]: Start accepts. Automaton has 17377 states and 21871 transitions. Word has length 68 [2022-07-13 20:45:38,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:45:38,541 INFO L495 AbstractCegarLoop]: Abstraction has 17377 states and 21871 transitions. [2022-07-13 20:45:38,541 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 20:45:38,541 INFO L276 IsEmpty]: Start isEmpty. Operand 17377 states and 21871 transitions. [2022-07-13 20:45:38,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:45:38,542 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:45:38,543 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 20:45:38,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 20:45:38,543 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:45:38,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:45:38,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1360814688, now seen corresponding path program 1 times [2022-07-13 20:45:38,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:45:38,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46231880] [2022-07-13 20:45:38,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:45:38,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:45:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:45:38,588 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 20:45:38,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:45:38,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46231880] [2022-07-13 20:45:38,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46231880] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:45:38,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:45:38,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:45:38,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613602210] [2022-07-13 20:45:38,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:45:38,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:45:38,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:45:38,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:45:38,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:45:38,592 INFO L87 Difference]: Start difference. First operand 17377 states and 21871 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 20:45:39,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:45:39,752 INFO L93 Difference]: Finished difference Result 28988 states and 36122 transitions. [2022-07-13 20:45:39,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:45:39,753 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 20:45:39,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:45:39,770 INFO L225 Difference]: With dead ends: 28988 [2022-07-13 20:45:39,770 INFO L226 Difference]: Without dead ends: 13257 [2022-07-13 20:45:39,784 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 20:45:39,784 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 20:45:39,785 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 20:45:39,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13257 states. [2022-07-13 20:45:41,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13257 to 13257. [2022-07-13 20:45:41,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13257 states, 13255 states have (on average 1.2516031686156168) internal successors, (16590), 13256 states have internal predecessors, (16590), 0 states have call successors, (0), 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 20:45:41,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13257 states to 13257 states and 16590 transitions. [2022-07-13 20:45:41,112 INFO L78 Accepts]: Start accepts. Automaton has 13257 states and 16590 transitions. Word has length 68 [2022-07-13 20:45:41,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:45:41,112 INFO L495 AbstractCegarLoop]: Abstraction has 13257 states and 16590 transitions. [2022-07-13 20:45:41,112 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 20:45:41,112 INFO L276 IsEmpty]: Start isEmpty. Operand 13257 states and 16590 transitions. [2022-07-13 20:45:41,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:45:41,113 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:45:41,114 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 20:45:41,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 20:45:41,114 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:45:41,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:45:41,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1355942016, now seen corresponding path program 1 times [2022-07-13 20:45:41,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:45:41,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109071071] [2022-07-13 20:45:41,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:45:41,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:45:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:45:41,162 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 20:45:41,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:45:41,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109071071] [2022-07-13 20:45:41,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109071071] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:45:41,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:45:41,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:45:41,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799668750] [2022-07-13 20:45:41,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:45:41,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:45:41,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:45:41,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:45:41,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:45:41,167 INFO L87 Difference]: Start difference. First operand 13257 states and 16590 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 20:45:42,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:45:42,325 INFO L93 Difference]: Finished difference Result 22263 states and 27515 transitions. [2022-07-13 20:45:42,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:45:42,326 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 20:45:42,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:45:42,339 INFO L225 Difference]: With dead ends: 22263 [2022-07-13 20:45:42,339 INFO L226 Difference]: Without dead ends: 10573 [2022-07-13 20:45:42,349 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 20:45:42,349 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 4563 mSDsluCounter, 1460 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4563 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:45:42,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4563 Valid, 2953 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:45:42,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10573 states. [2022-07-13 20:45:43,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10573 to 10573. [2022-07-13 20:45:43,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10573 states, 10571 states have (on average 1.2554157600983824) internal successors, (13271), 10572 states have internal predecessors, (13271), 0 states have call successors, (0), 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 20:45:43,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10573 states to 10573 states and 13271 transitions. [2022-07-13 20:45:43,344 INFO L78 Accepts]: Start accepts. Automaton has 10573 states and 13271 transitions. Word has length 68 [2022-07-13 20:45:43,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:45:43,344 INFO L495 AbstractCegarLoop]: Abstraction has 10573 states and 13271 transitions. [2022-07-13 20:45:43,344 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 20:45:43,344 INFO L276 IsEmpty]: Start isEmpty. Operand 10573 states and 13271 transitions. [2022-07-13 20:45:43,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-13 20:45:43,345 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:45:43,346 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 20:45:43,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 20:45:43,346 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:45:43,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:45:43,346 INFO L85 PathProgramCache]: Analyzing trace with hash -576881103, now seen corresponding path program 1 times [2022-07-13 20:45:43,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:45:43,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785973993] [2022-07-13 20:45:43,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:45:43,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:45:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:45:43,643 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 20:45:43,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:45:43,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785973993] [2022-07-13 20:45:43,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785973993] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:45:43,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644502083] [2022-07-13 20:45:43,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:45:43,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:45:43,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:45:43,645 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 20:45:43,646 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 20:45:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:45:43,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-13 20:45:43,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:45:45,026 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 20:45:45,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:45:45,677 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 20:45:45,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644502083] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 20:45:45,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 20:45:45,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 31 [2022-07-13 20:45:45,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378531931] [2022-07-13 20:45:45,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 20:45:45,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-13 20:45:45,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:45:45,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-13 20:45:45,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-07-13 20:45:45,680 INFO L87 Difference]: Start difference. First operand 10573 states and 13271 transitions. Second operand has 31 states, 31 states have (on average 6.096774193548387) internal successors, (189), 31 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)