./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b8f11c58bd911b111c6f04ca73beac7abb77a983b1f6790a335f756f9ecfba15 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 18:50:59,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:50:59,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:50:59,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:50:59,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:50:59,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:50:59,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:50:59,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:50:59,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:50:59,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:50:59,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:50:59,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:50:59,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:50:59,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:50:59,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:50:59,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:50:59,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:50:59,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:50:59,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:50:59,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:50:59,382 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:50:59,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:50:59,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:50:59,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:50:59,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:50:59,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:50:59,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:50:59,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:50:59,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:50:59,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:50:59,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:50:59,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:50:59,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:50:59,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:50:59,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:50:59,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:50:59,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:50:59,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:50:59,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:50:59,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:50:59,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:50:59,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:50:59,400 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:50:59,427 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:50:59,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:50:59,428 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:50:59,428 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:50:59,429 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:50:59,429 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:50:59,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:50:59,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:50:59,430 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:50:59,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:50:59,431 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:50:59,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:50:59,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:50:59,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:50:59,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:50:59,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:50:59,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:50:59,432 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:50:59,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:50:59,432 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:50:59,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:50:59,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:50:59,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:50:59,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:50:59,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:50:59,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:50:59,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:50:59,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:50:59,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:50:59,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:50:59,434 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:50:59,434 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:50:59,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:50:59,434 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8f11c58bd911b111c6f04ca73beac7abb77a983b1f6790a335f756f9ecfba15 [2022-07-22 18:50:59,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:50:59,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:50:59,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:50:59,681 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:50:59,681 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:50:59,682 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-22 18:50:59,724 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e4eeaf59/948df8682a7e4780902719fa9353f757/FLAG92c2573e7 [2022-07-22 18:51:00,097 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:51:00,098 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-22 18:51:00,120 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e4eeaf59/948df8682a7e4780902719fa9353f757/FLAG92c2573e7 [2022-07-22 18:51:00,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e4eeaf59/948df8682a7e4780902719fa9353f757 [2022-07-22 18:51:00,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:51:00,134 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:51:00,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:51:00,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:51:00,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:51:00,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:51:00" (1/1) ... [2022-07-22 18:51:00,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ffad6b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:51:00, skipping insertion in model container [2022-07-22 18:51:00,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:51:00" (1/1) ... [2022-07-22 18:51:00,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:51:00,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:51:00,482 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[10376,10389] [2022-07-22 18:51:00,543 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:51:00,551 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:51:00,594 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/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[10376,10389] [2022-07-22 18:51:00,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:51:00,626 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:51:00,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:51:00 WrapperNode [2022-07-22 18:51:00,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:51:00,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:51:00,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:51:00,628 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:51:00,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:51:00" (1/1) ... [2022-07-22 18:51:00,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:51:00" (1/1) ... [2022-07-22 18:51:00,673 INFO L137 Inliner]: procedures = 27, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 828 [2022-07-22 18:51:00,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:51:00,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:51:00,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:51:00,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:51:00,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:51:00" (1/1) ... [2022-07-22 18:51:00,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:51:00" (1/1) ... [2022-07-22 18:51:00,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:51:00" (1/1) ... [2022-07-22 18:51:00,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:51:00" (1/1) ... [2022-07-22 18:51:00,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:51:00" (1/1) ... [2022-07-22 18:51:00,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:51:00" (1/1) ... [2022-07-22 18:51:00,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:51:00" (1/1) ... [2022-07-22 18:51:00,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:51:00,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:51:00,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:51:00,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:51:00,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:51:00" (1/1) ... [2022-07-22 18:51:00,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:51:00,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:51:00,746 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) [2022-07-22 18:51:00,748 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 [2022-07-22 18:51:00,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:51:00,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:51:00,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:51:00,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:51:00,942 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:51:00,943 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:51:01,489 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:51:01,495 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:51:01,495 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 18:51:01,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:51:01 BoogieIcfgContainer [2022-07-22 18:51:01,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:51:01,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:51:01,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:51:01,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:51:01,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:51:00" (1/3) ... [2022-07-22 18:51:01,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb115e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:51:01, skipping insertion in model container [2022-07-22 18:51:01,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:51:00" (2/3) ... [2022-07-22 18:51:01,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb115e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:51:01, skipping insertion in model container [2022-07-22 18:51:01,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:51:01" (3/3) ... [2022-07-22 18:51:01,503 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-22 18:51:01,512 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:51:01,513 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 18:51:01,547 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:51:01,551 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@f2909fb, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@115d32cd [2022-07-22 18:51:01,551 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 18:51:01,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 199 states have (on average 1.763819095477387) internal successors, (351), 200 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:01,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-22 18:51:01,562 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:51:01,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:51:01,564 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:51:01,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:51:01,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1361095482, now seen corresponding path program 1 times [2022-07-22 18:51:01,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:51:01,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427246418] [2022-07-22 18:51:01,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:51:01,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:51:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:51:01,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:51:01,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:51:01,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427246418] [2022-07-22 18:51:01,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427246418] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:51:01,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:51:01,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:51:01,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672756689] [2022-07-22 18:51:01,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:51:01,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:51:01,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:51:01,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:51:01,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:51:01,954 INFO L87 Difference]: Start difference. First operand has 201 states, 199 states have (on average 1.763819095477387) internal successors, (351), 200 states have internal predecessors, (351), 0 states have call successors, (0), 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 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:02,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:51:02,462 INFO L93 Difference]: Finished difference Result 1440 states and 2328 transitions. [2022-07-22 18:51:02,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 18:51:02,465 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-07-22 18:51:02,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:51:02,477 INFO L225 Difference]: With dead ends: 1440 [2022-07-22 18:51:02,477 INFO L226 Difference]: Without dead ends: 1332 [2022-07-22 18:51:02,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-07-22 18:51:02,482 INFO L413 NwaCegarLoop]: 764 mSDtfsCounter, 2817 mSDsluCounter, 4939 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2817 SdHoareTripleChecker+Valid, 5703 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:51:02,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2817 Valid, 5703 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:51:02,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2022-07-22 18:51:02,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 303. [2022-07-22 18:51:02,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.4503311258278146) internal successors, (438), 302 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:02,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 438 transitions. [2022-07-22 18:51:02,537 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 438 transitions. Word has length 107 [2022-07-22 18:51:02,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:51:02,537 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 438 transitions. [2022-07-22 18:51:02,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:02,538 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 438 transitions. [2022-07-22 18:51:02,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 18:51:02,539 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:51:02,539 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:51:02,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 18:51:02,540 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:51:02,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:51:02,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1847794712, now seen corresponding path program 1 times [2022-07-22 18:51:02,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:51:02,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188839339] [2022-07-22 18:51:02,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:51:02,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:51:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:51:02,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:51:02,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:51:02,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188839339] [2022-07-22 18:51:02,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188839339] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:51:02,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:51:02,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:51:02,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537312996] [2022-07-22 18:51:02,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:51:02,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:51:02,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:51:02,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:51:02,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:51:02,693 INFO L87 Difference]: Start difference. First operand 303 states and 438 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:03,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:51:03,003 INFO L93 Difference]: Finished difference Result 1559 states and 2435 transitions. [2022-07-22 18:51:03,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 18:51:03,003 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-07-22 18:51:03,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:51:03,007 INFO L225 Difference]: With dead ends: 1559 [2022-07-22 18:51:03,008 INFO L226 Difference]: Without dead ends: 1399 [2022-07-22 18:51:03,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-22 18:51:03,010 INFO L413 NwaCegarLoop]: 733 mSDtfsCounter, 1952 mSDsluCounter, 2094 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1952 SdHoareTripleChecker+Valid, 2827 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:51:03,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1952 Valid, 2827 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:51:03,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2022-07-22 18:51:03,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 482. [2022-07-22 18:51:03,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.5051975051975053) internal successors, (724), 481 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:03,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 724 transitions. [2022-07-22 18:51:03,059 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 724 transitions. Word has length 109 [2022-07-22 18:51:03,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:51:03,060 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 724 transitions. [2022-07-22 18:51:03,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:03,061 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 724 transitions. [2022-07-22 18:51:03,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 18:51:03,067 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:51:03,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:51:03,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 18:51:03,069 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:51:03,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:51:03,070 INFO L85 PathProgramCache]: Analyzing trace with hash 2013134268, now seen corresponding path program 1 times [2022-07-22 18:51:03,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:51:03,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020572149] [2022-07-22 18:51:03,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:51:03,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:51:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:51:03,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:51:03,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:51:03,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020572149] [2022-07-22 18:51:03,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020572149] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:51:03,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:51:03,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:51:03,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721636067] [2022-07-22 18:51:03,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:51:03,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:51:03,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:51:03,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:51:03,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:51:03,236 INFO L87 Difference]: Start difference. First operand 482 states and 724 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:03,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:51:03,642 INFO L93 Difference]: Finished difference Result 1738 states and 2721 transitions. [2022-07-22 18:51:03,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 18:51:03,643 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-07-22 18:51:03,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:51:03,648 INFO L225 Difference]: With dead ends: 1738 [2022-07-22 18:51:03,648 INFO L226 Difference]: Without dead ends: 1578 [2022-07-22 18:51:03,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-22 18:51:03,650 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 2232 mSDsluCounter, 1857 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2232 SdHoareTripleChecker+Valid, 2473 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:51:03,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2232 Valid, 2473 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:51:03,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2022-07-22 18:51:03,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 735. [2022-07-22 18:51:03,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 734 states have (on average 1.5367847411444142) internal successors, (1128), 734 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:03,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1128 transitions. [2022-07-22 18:51:03,718 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1128 transitions. Word has length 109 [2022-07-22 18:51:03,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:51:03,719 INFO L495 AbstractCegarLoop]: Abstraction has 735 states and 1128 transitions. [2022-07-22 18:51:03,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:03,719 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1128 transitions. [2022-07-22 18:51:03,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 18:51:03,720 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:51:03,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:51:03,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 18:51:03,720 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:51:03,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:51:03,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1500386704, now seen corresponding path program 1 times [2022-07-22 18:51:03,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:51:03,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618072930] [2022-07-22 18:51:03,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:51:03,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:51:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:51:03,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:51:03,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:51:03,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618072930] [2022-07-22 18:51:03,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618072930] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:51:03,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:51:03,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:51:03,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59250240] [2022-07-22 18:51:03,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:51:03,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:51:03,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:51:03,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:51:03,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:51:03,867 INFO L87 Difference]: Start difference. First operand 735 states and 1128 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:04,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:51:04,240 INFO L93 Difference]: Finished difference Result 1907 states and 2991 transitions. [2022-07-22 18:51:04,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 18:51:04,241 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-07-22 18:51:04,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:51:04,247 INFO L225 Difference]: With dead ends: 1907 [2022-07-22 18:51:04,247 INFO L226 Difference]: Without dead ends: 1747 [2022-07-22 18:51:04,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-22 18:51:04,254 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 2406 mSDsluCounter, 1822 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2406 SdHoareTripleChecker+Valid, 2320 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:51:04,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2406 Valid, 2320 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:51:04,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2022-07-22 18:51:04,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 899. [2022-07-22 18:51:04,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 898 states have (on average 1.5478841870824054) internal successors, (1390), 898 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:04,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1390 transitions. [2022-07-22 18:51:04,337 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1390 transitions. Word has length 109 [2022-07-22 18:51:04,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:51:04,337 INFO L495 AbstractCegarLoop]: Abstraction has 899 states and 1390 transitions. [2022-07-22 18:51:04,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:04,337 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1390 transitions. [2022-07-22 18:51:04,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 18:51:04,338 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:51:04,338 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:51:04,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 18:51:04,340 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:51:04,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:51:04,341 INFO L85 PathProgramCache]: Analyzing trace with hash -2131359206, now seen corresponding path program 1 times [2022-07-22 18:51:04,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:51:04,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147149459] [2022-07-22 18:51:04,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:51:04,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:51:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:51:04,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:51:04,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:51:04,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147149459] [2022-07-22 18:51:04,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147149459] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:51:04,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:51:04,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:51:04,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118317354] [2022-07-22 18:51:04,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:51:04,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:51:04,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:51:04,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:51:04,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:51:04,466 INFO L87 Difference]: Start difference. First operand 899 states and 1390 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:04,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:51:04,787 INFO L93 Difference]: Finished difference Result 2066 states and 3245 transitions. [2022-07-22 18:51:04,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 18:51:04,788 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-07-22 18:51:04,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:51:04,793 INFO L225 Difference]: With dead ends: 2066 [2022-07-22 18:51:04,793 INFO L226 Difference]: Without dead ends: 1906 [2022-07-22 18:51:04,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-22 18:51:04,794 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 2914 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2914 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:51:04,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2914 Valid, 2206 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:51:04,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2022-07-22 18:51:04,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1058. [2022-07-22 18:51:04,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 1057 states have (on average 1.555345316934721) internal successors, (1644), 1057 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:04,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1644 transitions. [2022-07-22 18:51:04,905 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1644 transitions. Word has length 109 [2022-07-22 18:51:04,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:51:04,905 INFO L495 AbstractCegarLoop]: Abstraction has 1058 states and 1644 transitions. [2022-07-22 18:51:04,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:04,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1644 transitions. [2022-07-22 18:51:04,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 18:51:04,906 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:51:04,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:51:04,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 18:51:04,907 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:51:04,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:51:04,907 INFO L85 PathProgramCache]: Analyzing trace with hash -983368864, now seen corresponding path program 1 times [2022-07-22 18:51:04,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:51:04,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325839453] [2022-07-22 18:51:04,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:51:04,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:51:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:51:04,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:51:04,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:51:04,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325839453] [2022-07-22 18:51:04,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325839453] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:51:04,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:51:04,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:51:04,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445665236] [2022-07-22 18:51:04,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:51:04,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:51:04,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:51:04,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:51:04,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:51:04,947 INFO L87 Difference]: Start difference. First operand 1058 states and 1644 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:05,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:51:05,161 INFO L93 Difference]: Finished difference Result 2729 states and 4305 transitions. [2022-07-22 18:51:05,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:51:05,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-07-22 18:51:05,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:51:05,166 INFO L225 Difference]: With dead ends: 2729 [2022-07-22 18:51:05,166 INFO L226 Difference]: Without dead ends: 1858 [2022-07-22 18:51:05,167 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 [2022-07-22 18:51:05,168 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 115 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:51:05,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 637 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:51:05,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2022-07-22 18:51:05,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1834. [2022-07-22 18:51:05,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 1.55810147299509) internal successors, (2856), 1833 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:05,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2856 transitions. [2022-07-22 18:51:05,341 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2856 transitions. Word has length 109 [2022-07-22 18:51:05,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:51:05,341 INFO L495 AbstractCegarLoop]: Abstraction has 1834 states and 2856 transitions. [2022-07-22 18:51:05,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:05,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2856 transitions. [2022-07-22 18:51:05,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 18:51:05,343 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:51:05,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:51:05,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 18:51:05,343 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:51:05,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:51:05,343 INFO L85 PathProgramCache]: Analyzing trace with hash -739291201, now seen corresponding path program 1 times [2022-07-22 18:51:05,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:51:05,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672737508] [2022-07-22 18:51:05,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:51:05,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:51:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:51:05,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:51:05,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:51:05,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672737508] [2022-07-22 18:51:05,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672737508] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:51:05,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:51:05,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:51:05,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754233674] [2022-07-22 18:51:05,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:51:05,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:51:05,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:51:05,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:51:05,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:51:05,549 INFO L87 Difference]: Start difference. First operand 1834 states and 2856 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:06,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:51:06,103 INFO L93 Difference]: Finished difference Result 3483 states and 5462 transitions. [2022-07-22 18:51:06,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 18:51:06,103 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-07-22 18:51:06,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:51:06,108 INFO L225 Difference]: With dead ends: 3483 [2022-07-22 18:51:06,108 INFO L226 Difference]: Without dead ends: 1836 [2022-07-22 18:51:06,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-07-22 18:51:06,112 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 672 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:51:06,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 1496 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:51:06,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2022-07-22 18:51:06,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1834. [2022-07-22 18:51:06,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 1.5548281505728314) internal successors, (2850), 1833 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:06,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2850 transitions. [2022-07-22 18:51:06,317 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2850 transitions. Word has length 109 [2022-07-22 18:51:06,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:51:06,318 INFO L495 AbstractCegarLoop]: Abstraction has 1834 states and 2850 transitions. [2022-07-22 18:51:06,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:06,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2850 transitions. [2022-07-22 18:51:06,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 18:51:06,319 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:51:06,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:51:06,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 18:51:06,319 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:51:06,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:51:06,320 INFO L85 PathProgramCache]: Analyzing trace with hash 307798176, now seen corresponding path program 1 times [2022-07-22 18:51:06,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:51:06,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694175500] [2022-07-22 18:51:06,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:51:06,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:51:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:51:06,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:51:06,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:51:06,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694175500] [2022-07-22 18:51:06,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694175500] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:51:06,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:51:06,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:51:06,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648164586] [2022-07-22 18:51:06,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:51:06,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:51:06,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:51:06,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:51:06,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:51:06,408 INFO L87 Difference]: Start difference. First operand 1834 states and 2850 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:06,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:51:06,928 INFO L93 Difference]: Finished difference Result 3987 states and 6244 transitions. [2022-07-22 18:51:06,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 18:51:06,928 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-07-22 18:51:06,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:51:06,937 INFO L225 Difference]: With dead ends: 3987 [2022-07-22 18:51:06,937 INFO L226 Difference]: Without dead ends: 3686 [2022-07-22 18:51:06,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-22 18:51:06,939 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 2209 mSDsluCounter, 2010 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2209 SdHoareTripleChecker+Valid, 2500 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:51:06,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2209 Valid, 2500 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:51:06,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2022-07-22 18:51:07,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 2133. [2022-07-22 18:51:07,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2133 states, 2132 states have (on average 1.5581613508442778) internal successors, (3322), 2132 states have internal predecessors, (3322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:07,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2133 states to 2133 states and 3322 transitions. [2022-07-22 18:51:07,182 INFO L78 Accepts]: Start accepts. Automaton has 2133 states and 3322 transitions. Word has length 109 [2022-07-22 18:51:07,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:51:07,182 INFO L495 AbstractCegarLoop]: Abstraction has 2133 states and 3322 transitions. [2022-07-22 18:51:07,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:07,182 INFO L276 IsEmpty]: Start isEmpty. Operand 2133 states and 3322 transitions. [2022-07-22 18:51:07,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 18:51:07,183 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:51:07,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:51:07,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 18:51:07,184 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:51:07,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:51:07,184 INFO L85 PathProgramCache]: Analyzing trace with hash -2133931794, now seen corresponding path program 1 times [2022-07-22 18:51:07,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:51:07,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413576274] [2022-07-22 18:51:07,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:51:07,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:51:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:51:07,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:51:07,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:51:07,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413576274] [2022-07-22 18:51:07,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413576274] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:51:07,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:51:07,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:51:07,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537165934] [2022-07-22 18:51:07,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:51:07,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:51:07,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:51:07,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:51:07,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:51:07,267 INFO L87 Difference]: Start difference. First operand 2133 states and 3322 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:07,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:51:07,875 INFO L93 Difference]: Finished difference Result 4292 states and 6725 transitions. [2022-07-22 18:51:07,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 18:51:07,875 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-07-22 18:51:07,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:51:07,886 INFO L225 Difference]: With dead ends: 4292 [2022-07-22 18:51:07,886 INFO L226 Difference]: Without dead ends: 3991 [2022-07-22 18:51:07,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-22 18:51:07,889 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 2157 mSDsluCounter, 2623 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2157 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:51:07,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2157 Valid, 3130 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:51:07,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3991 states. [2022-07-22 18:51:08,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3991 to 2443. [2022-07-22 18:51:08,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2443 states, 2442 states have (on average 1.5606060606060606) internal successors, (3811), 2442 states have internal predecessors, (3811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:08,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2443 states to 2443 states and 3811 transitions. [2022-07-22 18:51:08,175 INFO L78 Accepts]: Start accepts. Automaton has 2443 states and 3811 transitions. Word has length 109 [2022-07-22 18:51:08,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:51:08,175 INFO L495 AbstractCegarLoop]: Abstraction has 2443 states and 3811 transitions. [2022-07-22 18:51:08,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:08,175 INFO L276 IsEmpty]: Start isEmpty. Operand 2443 states and 3811 transitions. [2022-07-22 18:51:08,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 18:51:08,176 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:51:08,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:51:08,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 18:51:08,177 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:51:08,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:51:08,177 INFO L85 PathProgramCache]: Analyzing trace with hash 763996610, now seen corresponding path program 1 times [2022-07-22 18:51:08,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:51:08,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826375645] [2022-07-22 18:51:08,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:51:08,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:51:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:51:08,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:51:08,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:51:08,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826375645] [2022-07-22 18:51:08,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826375645] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:51:08,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:51:08,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:51:08,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971204755] [2022-07-22 18:51:08,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:51:08,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:51:08,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:51:08,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:51:08,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:51:08,258 INFO L87 Difference]: Start difference. First operand 2443 states and 3811 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:09,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:51:09,032 INFO L93 Difference]: Finished difference Result 4607 states and 7222 transitions. [2022-07-22 18:51:09,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 18:51:09,033 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-07-22 18:51:09,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:51:09,051 INFO L225 Difference]: With dead ends: 4607 [2022-07-22 18:51:09,052 INFO L226 Difference]: Without dead ends: 4306 [2022-07-22 18:51:09,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-22 18:51:09,054 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 2330 mSDsluCounter, 2869 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2330 SdHoareTripleChecker+Valid, 3291 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:51:09,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2330 Valid, 3291 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:51:09,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4306 states. [2022-07-22 18:51:09,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4306 to 2763. [2022-07-22 18:51:09,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 1.562635771180304) internal successors, (4316), 2762 states have internal predecessors, (4316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:09,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 4316 transitions. [2022-07-22 18:51:09,428 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 4316 transitions. Word has length 109 [2022-07-22 18:51:09,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:51:09,429 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 4316 transitions. [2022-07-22 18:51:09,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:09,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 4316 transitions. [2022-07-22 18:51:09,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-22 18:51:09,430 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:51:09,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:51:09,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 18:51:09,431 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:51:09,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:51:09,431 INFO L85 PathProgramCache]: Analyzing trace with hash -186015446, now seen corresponding path program 1 times [2022-07-22 18:51:09,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:51:09,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072356312] [2022-07-22 18:51:09,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:51:09,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:51:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:51:09,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:51:09,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:51:09,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072356312] [2022-07-22 18:51:09,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072356312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:51:09,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:51:09,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:51:09,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528216687] [2022-07-22 18:51:09,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:51:09,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:51:09,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:51:09,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:51:09,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:51:09,492 INFO L87 Difference]: Start difference. First operand 2763 states and 4316 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:09,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:51:09,967 INFO L93 Difference]: Finished difference Result 5470 states and 8575 transitions. [2022-07-22 18:51:09,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:51:09,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-07-22 18:51:09,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:51:09,976 INFO L225 Difference]: With dead ends: 5470 [2022-07-22 18:51:09,977 INFO L226 Difference]: Without dead ends: 2763 [2022-07-22 18:51:09,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:51:09,980 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 739 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:51:09,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 150 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:51:09,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2022-07-22 18:51:10,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2763. [2022-07-22 18:51:10,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 1.5499637943519189) internal successors, (4281), 2762 states have internal predecessors, (4281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:10,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 4281 transitions. [2022-07-22 18:51:10,353 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 4281 transitions. Word has length 110 [2022-07-22 18:51:10,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:51:10,354 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 4281 transitions. [2022-07-22 18:51:10,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:10,354 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 4281 transitions. [2022-07-22 18:51:10,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 18:51:10,363 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:51:10,364 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:51:10,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 18:51:10,364 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:51:10,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:51:10,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1618909482, now seen corresponding path program 1 times [2022-07-22 18:51:10,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:51:10,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206188758] [2022-07-22 18:51:10,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:51:10,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:51:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:51:10,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:51:10,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:51:10,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206188758] [2022-07-22 18:51:10,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206188758] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:51:10,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:51:10,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:51:10,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203279271] [2022-07-22 18:51:10,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:51:10,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:51:10,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:51:10,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:51:10,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:51:10,419 INFO L87 Difference]: Start difference. First operand 2763 states and 4281 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:10,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:51:10,901 INFO L93 Difference]: Finished difference Result 5454 states and 8486 transitions. [2022-07-22 18:51:10,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:51:10,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2022-07-22 18:51:10,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:51:10,907 INFO L225 Difference]: With dead ends: 5454 [2022-07-22 18:51:10,907 INFO L226 Difference]: Without dead ends: 2763 [2022-07-22 18:51:10,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:51:10,911 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 688 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:51:10,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 182 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:51:10,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2022-07-22 18:51:11,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2763. [2022-07-22 18:51:11,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 1.5372918175235337) internal successors, (4246), 2762 states have internal predecessors, (4246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:11,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 4246 transitions. [2022-07-22 18:51:11,377 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 4246 transitions. Word has length 111 [2022-07-22 18:51:11,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:51:11,377 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 4246 transitions. [2022-07-22 18:51:11,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:11,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 4246 transitions. [2022-07-22 18:51:11,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 18:51:11,379 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:51:11,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:51:11,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 18:51:11,379 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:51:11,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:51:11,380 INFO L85 PathProgramCache]: Analyzing trace with hash -716601046, now seen corresponding path program 1 times [2022-07-22 18:51:11,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:51:11,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592160166] [2022-07-22 18:51:11,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:51:11,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:51:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:51:11,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:51:11,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:51:11,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592160166] [2022-07-22 18:51:11,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592160166] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:51:11,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:51:11,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:51:11,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770124406] [2022-07-22 18:51:11,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:51:11,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:51:11,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:51:11,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:51:11,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:51:11,439 INFO L87 Difference]: Start difference. First operand 2763 states and 4246 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:11,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:51:11,920 INFO L93 Difference]: Finished difference Result 5446 states and 8407 transitions. [2022-07-22 18:51:11,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:51:11,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2022-07-22 18:51:11,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:51:11,927 INFO L225 Difference]: With dead ends: 5446 [2022-07-22 18:51:11,927 INFO L226 Difference]: Without dead ends: 2763 [2022-07-22 18:51:11,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:51:11,930 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 662 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:51:11,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 202 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:51:11,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2022-07-22 18:51:12,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2763. [2022-07-22 18:51:12,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 1.5246198406951486) internal successors, (4211), 2762 states have internal predecessors, (4211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:12,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 4211 transitions. [2022-07-22 18:51:12,284 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 4211 transitions. Word has length 112 [2022-07-22 18:51:12,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:51:12,285 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 4211 transitions. [2022-07-22 18:51:12,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:12,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 4211 transitions. [2022-07-22 18:51:12,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 18:51:12,286 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:51:12,286 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:51:12,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 18:51:12,287 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:51:12,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:51:12,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1447492906, now seen corresponding path program 1 times [2022-07-22 18:51:12,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:51:12,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585227841] [2022-07-22 18:51:12,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:51:12,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:51:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:51:12,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:51:12,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:51:12,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585227841] [2022-07-22 18:51:12,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585227841] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:51:12,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:51:12,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:51:12,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239821764] [2022-07-22 18:51:12,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:51:12,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:51:12,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:51:12,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:51:12,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:51:12,332 INFO L87 Difference]: Start difference. First operand 2763 states and 4211 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:12,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:51:12,799 INFO L93 Difference]: Finished difference Result 5458 states and 8351 transitions. [2022-07-22 18:51:12,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:51:12,800 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2022-07-22 18:51:12,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:51:12,804 INFO L225 Difference]: With dead ends: 5458 [2022-07-22 18:51:12,804 INFO L226 Difference]: Without dead ends: 2763 [2022-07-22 18:51:12,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:51:12,807 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 687 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:51:12,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 174 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:51:12,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2022-07-22 18:51:13,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2763. [2022-07-22 18:51:13,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 1.5119478638667632) internal successors, (4176), 2762 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:13,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 4176 transitions. [2022-07-22 18:51:13,185 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 4176 transitions. Word has length 113 [2022-07-22 18:51:13,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:51:13,185 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 4176 transitions. [2022-07-22 18:51:13,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:13,185 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 4176 transitions. [2022-07-22 18:51:13,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 18:51:13,186 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:51:13,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:51:13,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 18:51:13,187 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:51:13,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:51:13,187 INFO L85 PathProgramCache]: Analyzing trace with hash 912210718, now seen corresponding path program 1 times [2022-07-22 18:51:13,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:51:13,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859862419] [2022-07-22 18:51:13,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:51:13,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:51:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:51:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:51:13,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:51:13,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859862419] [2022-07-22 18:51:13,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859862419] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:51:13,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:51:13,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:51:13,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306989720] [2022-07-22 18:51:13,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:51:13,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:51:13,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:51:13,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:51:13,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:51:13,229 INFO L87 Difference]: Start difference. First operand 2763 states and 4176 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:13,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:51:13,701 INFO L93 Difference]: Finished difference Result 5466 states and 8291 transitions. [2022-07-22 18:51:13,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:51:13,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2022-07-22 18:51:13,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:51:13,706 INFO L225 Difference]: With dead ends: 5466 [2022-07-22 18:51:13,707 INFO L226 Difference]: Without dead ends: 2763 [2022-07-22 18:51:13,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:51:13,711 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 703 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:51:13,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 158 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:51:13,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2022-07-22 18:51:14,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2763. [2022-07-22 18:51:14,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 1.499275887038378) internal successors, (4141), 2762 states have internal predecessors, (4141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:14,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 4141 transitions. [2022-07-22 18:51:14,204 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 4141 transitions. Word has length 114 [2022-07-22 18:51:14,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:51:14,204 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 4141 transitions. [2022-07-22 18:51:14,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:14,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 4141 transitions. [2022-07-22 18:51:14,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-22 18:51:14,206 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:51:14,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:51:14,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 18:51:14,206 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:51:14,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:51:14,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1260402774, now seen corresponding path program 1 times [2022-07-22 18:51:14,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:51:14,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495036464] [2022-07-22 18:51:14,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:51:14,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:51:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:51:14,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:51:14,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:51:14,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495036464] [2022-07-22 18:51:14,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495036464] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:51:14,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:51:14,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:51:14,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409350111] [2022-07-22 18:51:14,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:51:14,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:51:14,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:51:14,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:51:14,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:51:14,257 INFO L87 Difference]: Start difference. First operand 2763 states and 4141 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:14,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:51:14,743 INFO L93 Difference]: Finished difference Result 5462 states and 8217 transitions. [2022-07-22 18:51:14,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:51:14,744 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-07-22 18:51:14,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:51:14,748 INFO L225 Difference]: With dead ends: 5462 [2022-07-22 18:51:14,748 INFO L226 Difference]: Without dead ends: 2763 [2022-07-22 18:51:14,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:51:14,751 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 685 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:51:14,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 166 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:51:14,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2022-07-22 18:51:15,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2763. [2022-07-22 18:51:15,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 1.4866039102099928) internal successors, (4106), 2762 states have internal predecessors, (4106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:15,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 4106 transitions. [2022-07-22 18:51:15,154 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 4106 transitions. Word has length 115 [2022-07-22 18:51:15,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:51:15,155 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 4106 transitions. [2022-07-22 18:51:15,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:15,155 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 4106 transitions. [2022-07-22 18:51:15,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-22 18:51:15,156 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:51:15,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:51:15,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 18:51:15,156 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:51:15,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:51:15,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1805227026, now seen corresponding path program 1 times [2022-07-22 18:51:15,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:51:15,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514779909] [2022-07-22 18:51:15,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:51:15,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:51:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:51:15,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:51:15,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:51:15,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514779909] [2022-07-22 18:51:15,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514779909] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:51:15,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:51:15,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:51:15,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779401564] [2022-07-22 18:51:15,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:51:15,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:51:15,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:51:15,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:51:15,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:51:15,203 INFO L87 Difference]: Start difference. First operand 2763 states and 4106 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:15,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:51:15,693 INFO L93 Difference]: Finished difference Result 5450 states and 8135 transitions. [2022-07-22 18:51:15,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:51:15,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-07-22 18:51:15,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:51:15,698 INFO L225 Difference]: With dead ends: 5450 [2022-07-22 18:51:15,699 INFO L226 Difference]: Without dead ends: 2763 [2022-07-22 18:51:15,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:51:15,702 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 643 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:51:15,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 190 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:51:15,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2022-07-22 18:51:16,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2763. [2022-07-22 18:51:16,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 1.4739319333816074) internal successors, (4071), 2762 states have internal predecessors, (4071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:16,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 4071 transitions. [2022-07-22 18:51:16,116 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 4071 transitions. Word has length 116 [2022-07-22 18:51:16,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:51:16,116 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 4071 transitions. [2022-07-22 18:51:16,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:16,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 4071 transitions. [2022-07-22 18:51:16,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-22 18:51:16,117 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:51:16,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:51:16,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 18:51:16,118 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:51:16,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:51:16,118 INFO L85 PathProgramCache]: Analyzing trace with hash 695724750, now seen corresponding path program 1 times [2022-07-22 18:51:16,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:51:16,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941409174] [2022-07-22 18:51:16,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:51:16,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:51:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:51:16,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:51:16,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:51:16,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941409174] [2022-07-22 18:51:16,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941409174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:51:16,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:51:16,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:51:16,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866139096] [2022-07-22 18:51:16,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:51:16,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:51:16,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:51:16,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:51:16,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:51:16,229 INFO L87 Difference]: Start difference. First operand 2763 states and 4071 transitions. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:17,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:51:17,425 INFO L93 Difference]: Finished difference Result 7948 states and 11776 transitions. [2022-07-22 18:51:17,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 18:51:17,426 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2022-07-22 18:51:17,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:51:17,433 INFO L225 Difference]: With dead ends: 7948 [2022-07-22 18:51:17,433 INFO L226 Difference]: Without dead ends: 5307 [2022-07-22 18:51:17,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-07-22 18:51:17,436 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 1704 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1704 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:51:17,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1704 Valid, 462 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:51:17,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5307 states. [2022-07-22 18:51:17,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5307 to 2763. [2022-07-22 18:51:17,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 1.4735698769007965) internal successors, (4070), 2762 states have internal predecessors, (4070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:17,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 4070 transitions. [2022-07-22 18:51:17,942 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 4070 transitions. Word has length 117 [2022-07-22 18:51:17,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:51:17,942 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 4070 transitions. [2022-07-22 18:51:17,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:17,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 4070 transitions. [2022-07-22 18:51:17,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-22 18:51:17,944 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:51:17,944 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:51:17,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 18:51:17,945 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:51:17,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:51:17,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1398912456, now seen corresponding path program 1 times [2022-07-22 18:51:17,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:51:17,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380549286] [2022-07-22 18:51:17,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:51:17,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:51:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:51:18,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:51:18,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:51:18,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380549286] [2022-07-22 18:51:18,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380549286] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:51:18,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:51:18,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 18:51:18,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033400596] [2022-07-22 18:51:18,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:51:18,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 18:51:18,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:51:18,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 18:51:18,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-22 18:51:18,167 INFO L87 Difference]: Start difference. First operand 2763 states and 4070 transitions. Second operand has 14 states, 14 states have (on average 8.428571428571429) internal successors, (118), 13 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:21,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:51:21,016 INFO L93 Difference]: Finished difference Result 12981 states and 19000 transitions. [2022-07-22 18:51:21,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 18:51:21,016 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.428571428571429) internal successors, (118), 13 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2022-07-22 18:51:21,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:51:21,027 INFO L225 Difference]: With dead ends: 12981 [2022-07-22 18:51:21,028 INFO L226 Difference]: Without dead ends: 10437 [2022-07-22 18:51:21,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2022-07-22 18:51:21,031 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 3398 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3398 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 18:51:21,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3398 Valid, 857 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 18:51:21,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10437 states. [2022-07-22 18:51:21,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10437 to 2876. [2022-07-22 18:51:21,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2876 states, 2875 states have (on average 1.4751304347826086) internal successors, (4241), 2875 states have internal predecessors, (4241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:21,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2876 states to 2876 states and 4241 transitions. [2022-07-22 18:51:21,658 INFO L78 Accepts]: Start accepts. Automaton has 2876 states and 4241 transitions. Word has length 118 [2022-07-22 18:51:21,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:51:21,658 INFO L495 AbstractCegarLoop]: Abstraction has 2876 states and 4241 transitions. [2022-07-22 18:51:21,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.428571428571429) internal successors, (118), 13 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:21,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2876 states and 4241 transitions. [2022-07-22 18:51:21,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-22 18:51:21,659 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:51:21,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:51:21,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 18:51:21,660 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:51:21,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:51:21,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1914982570, now seen corresponding path program 1 times [2022-07-22 18:51:21,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:51:21,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363030961] [2022-07-22 18:51:21,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:51:21,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:51:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:51:21,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:51:21,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:51:21,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363030961] [2022-07-22 18:51:21,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363030961] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:51:21,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:51:21,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:51:21,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032586594] [2022-07-22 18:51:21,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:51:21,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 18:51:21,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:51:21,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 18:51:21,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:51:21,795 INFO L87 Difference]: Start difference. First operand 2876 states and 4241 transitions. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:23,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:51:23,530 INFO L93 Difference]: Finished difference Result 8129 states and 12014 transitions. [2022-07-22 18:51:23,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 18:51:23,530 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2022-07-22 18:51:23,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:51:23,536 INFO L225 Difference]: With dead ends: 8129 [2022-07-22 18:51:23,536 INFO L226 Difference]: Without dead ends: 5472 [2022-07-22 18:51:23,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-07-22 18:51:23,541 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 1687 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:51:23,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1687 Valid, 781 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:51:23,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5472 states. [2022-07-22 18:51:24,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5472 to 2763. [2022-07-22 18:51:24,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 1.4728457639391745) internal successors, (4068), 2762 states have internal predecessors, (4068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:24,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 4068 transitions. [2022-07-22 18:51:24,280 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 4068 transitions. Word has length 118 [2022-07-22 18:51:24,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:51:24,281 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 4068 transitions. [2022-07-22 18:51:24,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:24,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 4068 transitions. [2022-07-22 18:51:24,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-22 18:51:24,282 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:51:24,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:51:24,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 18:51:24,282 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:51:24,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:51:24,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1923786292, now seen corresponding path program 1 times [2022-07-22 18:51:24,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:51:24,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656410457] [2022-07-22 18:51:24,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:51:24,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:51:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:51:24,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:51:24,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:51:24,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656410457] [2022-07-22 18:51:24,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656410457] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:51:24,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:51:24,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:51:24,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495417890] [2022-07-22 18:51:24,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:51:24,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 18:51:24,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:51:24,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 18:51:24,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:51:24,393 INFO L87 Difference]: Start difference. First operand 2763 states and 4068 transitions. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:26,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:51:26,086 INFO L93 Difference]: Finished difference Result 8018 states and 11840 transitions. [2022-07-22 18:51:26,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 18:51:26,087 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2022-07-22 18:51:26,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:51:26,103 INFO L225 Difference]: With dead ends: 8018 [2022-07-22 18:51:26,103 INFO L226 Difference]: Without dead ends: 5437 [2022-07-22 18:51:26,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-07-22 18:51:26,107 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 1644 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:51:26,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1644 Valid, 524 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:51:26,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-07-22 18:51:26,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 2763. [2022-07-22 18:51:26,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 1.4706734250543085) internal successors, (4062), 2762 states have internal predecessors, (4062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:26,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 4062 transitions. [2022-07-22 18:51:26,792 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 4062 transitions. Word has length 118 [2022-07-22 18:51:26,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:51:26,792 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 4062 transitions. [2022-07-22 18:51:26,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:26,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 4062 transitions. [2022-07-22 18:51:26,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-22 18:51:26,801 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:51:26,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:51:26,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 18:51:26,802 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:51:26,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:51:26,803 INFO L85 PathProgramCache]: Analyzing trace with hash -26080566, now seen corresponding path program 1 times [2022-07-22 18:51:26,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:51:26,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427221207] [2022-07-22 18:51:26,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:51:26,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:51:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:51:26,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:51:26,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:51:26,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427221207] [2022-07-22 18:51:26,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427221207] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:51:26,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:51:26,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:51:26,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663529593] [2022-07-22 18:51:26,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:51:26,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 18:51:26,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:51:26,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 18:51:26,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:51:26,996 INFO L87 Difference]: Start difference. First operand 2763 states and 4062 transitions. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:28,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:51:28,980 INFO L93 Difference]: Finished difference Result 8093 states and 11944 transitions. [2022-07-22 18:51:28,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 18:51:28,980 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2022-07-22 18:51:28,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:51:28,985 INFO L225 Difference]: With dead ends: 8093 [2022-07-22 18:51:28,986 INFO L226 Difference]: Without dead ends: 5467 [2022-07-22 18:51:28,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2022-07-22 18:51:28,988 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 1368 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:51:28,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 753 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:51:28,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5467 states. [2022-07-22 18:51:29,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5467 to 2763. [2022-07-22 18:51:29,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 1.4692251991310645) internal successors, (4058), 2762 states have internal predecessors, (4058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:29,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 4058 transitions. [2022-07-22 18:51:29,700 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 4058 transitions. Word has length 119 [2022-07-22 18:51:29,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:51:29,701 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 4058 transitions. [2022-07-22 18:51:29,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:29,701 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 4058 transitions. [2022-07-22 18:51:29,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-22 18:51:29,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:51:29,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:51:29,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 18:51:29,702 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:51:29,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:51:29,702 INFO L85 PathProgramCache]: Analyzing trace with hash 611422821, now seen corresponding path program 1 times [2022-07-22 18:51:29,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:51:29,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121729958] [2022-07-22 18:51:29,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:51:29,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:51:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:51:29,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:51:29,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:51:29,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121729958] [2022-07-22 18:51:29,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121729958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:51:29,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:51:29,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:51:29,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633344918] [2022-07-22 18:51:29,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:51:29,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 18:51:29,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:51:29,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 18:51:29,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:51:29,818 INFO L87 Difference]: Start difference. First operand 2763 states and 4058 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:31,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:51:31,884 INFO L93 Difference]: Finished difference Result 8063 states and 11892 transitions. [2022-07-22 18:51:31,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 18:51:31,885 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2022-07-22 18:51:31,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:51:31,891 INFO L225 Difference]: With dead ends: 8063 [2022-07-22 18:51:31,891 INFO L226 Difference]: Without dead ends: 5457 [2022-07-22 18:51:31,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2022-07-22 18:51:31,894 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 1833 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:51:31,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1833 Valid, 590 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:51:31,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5457 states. [2022-07-22 18:51:32,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5457 to 2763. [2022-07-22 18:51:32,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 1.4674149167270094) internal successors, (4053), 2762 states have internal predecessors, (4053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:32,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 4053 transitions. [2022-07-22 18:51:32,673 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 4053 transitions. Word has length 120 [2022-07-22 18:51:32,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:51:32,674 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 4053 transitions. [2022-07-22 18:51:32,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:32,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 4053 transitions. [2022-07-22 18:51:32,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-22 18:51:32,675 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:51:32,675 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:51:32,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 18:51:32,675 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:51:32,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:51:32,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1269513856, now seen corresponding path program 1 times [2022-07-22 18:51:32,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:51:32,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990184931] [2022-07-22 18:51:32,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:51:32,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:51:32,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:51:32,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:51:32,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:51:32,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990184931] [2022-07-22 18:51:32,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990184931] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:51:32,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:51:32,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:51:32,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833925592] [2022-07-22 18:51:32,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:51:32,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 18:51:32,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:51:32,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 18:51:32,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:51:32,803 INFO L87 Difference]: Start difference. First operand 2763 states and 4053 transitions. Second operand has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:34,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:51:34,965 INFO L93 Difference]: Finished difference Result 7963 states and 11737 transitions. [2022-07-22 18:51:34,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 18:51:34,965 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2022-07-22 18:51:34,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:51:34,971 INFO L225 Difference]: With dead ends: 7963 [2022-07-22 18:51:34,971 INFO L226 Difference]: Without dead ends: 5412 [2022-07-22 18:51:34,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-07-22 18:51:34,973 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 1582 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:51:34,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1582 Valid, 725 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:51:34,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5412 states. [2022-07-22 18:51:35,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5412 to 2763. [2022-07-22 18:51:35,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 1.4648805213613323) internal successors, (4046), 2762 states have internal predecessors, (4046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:35,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 4046 transitions. [2022-07-22 18:51:35,819 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 4046 transitions. Word has length 121 [2022-07-22 18:51:35,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:51:35,819 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 4046 transitions. [2022-07-22 18:51:35,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:35,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 4046 transitions. [2022-07-22 18:51:35,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-22 18:51:35,820 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:51:35,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:51:35,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 18:51:35,821 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:51:35,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:51:35,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1051782329, now seen corresponding path program 1 times [2022-07-22 18:51:35,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:51:35,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171960623] [2022-07-22 18:51:35,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:51:35,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:51:35,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:51:35,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:51:35,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:51:35,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171960623] [2022-07-22 18:51:35,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171960623] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:51:35,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:51:35,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:51:35,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653789101] [2022-07-22 18:51:35,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:51:35,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 18:51:35,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:51:35,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 18:51:35,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:51:35,950 INFO L87 Difference]: Start difference. First operand 2763 states and 4046 transitions. Second operand has 10 states, 10 states have (on average 12.2) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:39,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:51:39,762 INFO L93 Difference]: Finished difference Result 12658 states and 18578 transitions. [2022-07-22 18:51:39,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 18:51:39,763 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-07-22 18:51:39,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:51:39,774 INFO L225 Difference]: With dead ends: 12658 [2022-07-22 18:51:39,774 INFO L226 Difference]: Without dead ends: 10114 [2022-07-22 18:51:39,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-07-22 18:51:39,779 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 1179 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:51:39,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1179 Valid, 857 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:51:39,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10114 states. [2022-07-22 18:51:40,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10114 to 2787. [2022-07-22 18:51:40,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2786 states have (on average 1.4637473079684136) internal successors, (4078), 2786 states have internal predecessors, (4078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:40,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 4078 transitions. [2022-07-22 18:51:40,683 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 4078 transitions. Word has length 122 [2022-07-22 18:51:40,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:51:40,683 INFO L495 AbstractCegarLoop]: Abstraction has 2787 states and 4078 transitions. [2022-07-22 18:51:40,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:40,683 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 4078 transitions. [2022-07-22 18:51:40,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-22 18:51:40,684 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:51:40,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:51:40,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 18:51:40,684 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:51:40,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:51:40,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1982702915, now seen corresponding path program 1 times [2022-07-22 18:51:40,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:51:40,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500285553] [2022-07-22 18:51:40,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:51:40,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:51:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:51:41,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:51:41,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:51:41,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500285553] [2022-07-22 18:51:41,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500285553] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:51:41,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:51:41,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 18:51:41,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496463218] [2022-07-22 18:51:41,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:51:41,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 18:51:41,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:51:41,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 18:51:41,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:51:41,013 INFO L87 Difference]: Start difference. First operand 2787 states and 4078 transitions. Second operand has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:45,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:51:45,635 INFO L93 Difference]: Finished difference Result 11309 states and 16694 transitions. [2022-07-22 18:51:45,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 18:51:45,635 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2022-07-22 18:51:45,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:51:45,646 INFO L225 Difference]: With dead ends: 11309 [2022-07-22 18:51:45,646 INFO L226 Difference]: Without dead ends: 10671 [2022-07-22 18:51:45,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-07-22 18:51:45,648 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 1613 mSDsluCounter, 2133 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1613 SdHoareTripleChecker+Valid, 2752 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:51:45,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1613 Valid, 2752 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:51:45,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10671 states. [2022-07-22 18:51:46,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10671 to 2768. [2022-07-22 18:51:46,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2768 states, 2767 states have (on average 1.462956270328876) internal successors, (4048), 2767 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:46,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 4048 transitions. [2022-07-22 18:51:46,745 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 4048 transitions. Word has length 123 [2022-07-22 18:51:46,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:51:46,745 INFO L495 AbstractCegarLoop]: Abstraction has 2768 states and 4048 transitions. [2022-07-22 18:51:46,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:51:46,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 4048 transitions. [2022-07-22 18:51:46,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-22 18:51:46,747 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:51:46,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:51:46,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 18:51:46,747 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:51:46,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:51:46,747 INFO L85 PathProgramCache]: Analyzing trace with hash 676674274, now seen corresponding path program 1 times [2022-07-22 18:51:46,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:51:46,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796124150] [2022-07-22 18:51:46,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:51:46,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:51:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:51:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:51:48,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:51:48,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796124150] [2022-07-22 18:51:48,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796124150] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:51:48,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:51:48,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-07-22 18:51:48,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533869969] [2022-07-22 18:51:48,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:51:48,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-07-22 18:51:48,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:51:48,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-07-22 18:51:48,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1872, Unknown=0, NotChecked=0, Total=1980 [2022-07-22 18:51:48,544 INFO L87 Difference]: Start difference. First operand 2768 states and 4048 transitions. Second operand has 45 states, 45 states have (on average 2.7333333333333334) internal successors, (123), 45 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:52:13,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:52:13,379 INFO L93 Difference]: Finished difference Result 24822 states and 36703 transitions. [2022-07-22 18:52:13,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-07-22 18:52:13,380 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.7333333333333334) internal successors, (123), 45 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2022-07-22 18:52:13,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:52:13,405 INFO L225 Difference]: With dead ends: 24822 [2022-07-22 18:52:13,405 INFO L226 Difference]: Without dead ends: 24222 [2022-07-22 18:52:13,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1028, Invalid=6282, Unknown=0, NotChecked=0, Total=7310 [2022-07-22 18:52:13,411 INFO L413 NwaCegarLoop]: 1071 mSDtfsCounter, 2829 mSDsluCounter, 31032 mSDsCounter, 0 mSdLazyCounter, 20435 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2829 SdHoareTripleChecker+Valid, 32103 SdHoareTripleChecker+Invalid, 20518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 20435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:52:13,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2829 Valid, 32103 Invalid, 20518 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [83 Valid, 20435 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-07-22 18:52:13,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24222 states. [2022-07-22 18:52:14,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24222 to 2807. [2022-07-22 18:52:14,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2807 states, 2806 states have (on average 1.4604419101924448) internal successors, (4098), 2806 states have internal predecessors, (4098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:52:14,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2807 states to 2807 states and 4098 transitions. [2022-07-22 18:52:14,965 INFO L78 Accepts]: Start accepts. Automaton has 2807 states and 4098 transitions. Word has length 123 [2022-07-22 18:52:14,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:52:14,965 INFO L495 AbstractCegarLoop]: Abstraction has 2807 states and 4098 transitions. [2022-07-22 18:52:14,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.7333333333333334) internal successors, (123), 45 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:52:14,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2807 states and 4098 transitions. [2022-07-22 18:52:14,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-22 18:52:14,966 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:52:14,966 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:52:14,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 18:52:14,967 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:52:14,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:52:14,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1499704734, now seen corresponding path program 1 times [2022-07-22 18:52:14,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:52:14,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094407480] [2022-07-22 18:52:14,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:52:14,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:52:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:52:15,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:52:15,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:52:15,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094407480] [2022-07-22 18:52:15,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094407480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:52:15,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:52:15,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:52:15,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928781105] [2022-07-22 18:52:15,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:52:15,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:52:15,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:52:15,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:52:15,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:52:15,020 INFO L87 Difference]: Start difference. First operand 2807 states and 4098 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:52:17,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:52:17,712 INFO L93 Difference]: Finished difference Result 7759 states and 11482 transitions. [2022-07-22 18:52:17,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:52:17,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2022-07-22 18:52:17,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:52:17,718 INFO L225 Difference]: With dead ends: 7759 [2022-07-22 18:52:17,718 INFO L226 Difference]: Without dead ends: 5215 [2022-07-22 18:52:17,720 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 [2022-07-22 18:52:17,721 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 129 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:52:17,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 551 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:52:17,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5215 states. [2022-07-22 18:52:20,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5215 to 5077. [2022-07-22 18:52:20,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5077 states, 5076 states have (on average 1.4623719464144995) internal successors, (7423), 5076 states have internal predecessors, (7423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:52:20,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5077 states to 5077 states and 7423 transitions. [2022-07-22 18:52:20,384 INFO L78 Accepts]: Start accepts. Automaton has 5077 states and 7423 transitions. Word has length 123 [2022-07-22 18:52:20,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:52:20,384 INFO L495 AbstractCegarLoop]: Abstraction has 5077 states and 7423 transitions. [2022-07-22 18:52:20,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:52:20,385 INFO L276 IsEmpty]: Start isEmpty. Operand 5077 states and 7423 transitions. [2022-07-22 18:52:20,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-22 18:52:20,385 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:52:20,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:52:20,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 18:52:20,386 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:52:20,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:52:20,386 INFO L85 PathProgramCache]: Analyzing trace with hash 507218245, now seen corresponding path program 1 times [2022-07-22 18:52:20,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:52:20,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140035100] [2022-07-22 18:52:20,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:52:20,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:52:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:52:20,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:52:20,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:52:20,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140035100] [2022-07-22 18:52:20,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140035100] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:52:20,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:52:20,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 18:52:20,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733943958] [2022-07-22 18:52:20,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:52:20,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 18:52:20,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:52:20,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 18:52:20,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-22 18:52:20,709 INFO L87 Difference]: Start difference. First operand 5077 states and 7423 transitions. Second operand has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:52:40,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:52:40,745 INFO L93 Difference]: Finished difference Result 32974 states and 48580 transitions. [2022-07-22 18:52:40,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 18:52:40,745 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2022-07-22 18:52:40,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:52:40,787 INFO L225 Difference]: With dead ends: 32974 [2022-07-22 18:52:40,788 INFO L226 Difference]: Without dead ends: 31840 [2022-07-22 18:52:40,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=220, Invalid=710, Unknown=0, NotChecked=0, Total=930 [2022-07-22 18:52:40,797 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 2692 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2692 SdHoareTripleChecker+Valid, 3481 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:52:40,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2692 Valid, 3481 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:52:40,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31840 states. [2022-07-22 18:52:44,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31840 to 5089. [2022-07-22 18:52:44,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5089 states, 5088 states have (on average 1.4626572327044025) internal successors, (7442), 5088 states have internal predecessors, (7442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:52:44,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 7442 transitions. [2022-07-22 18:52:44,110 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 7442 transitions. Word has length 123 [2022-07-22 18:52:44,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:52:44,111 INFO L495 AbstractCegarLoop]: Abstraction has 5089 states and 7442 transitions. [2022-07-22 18:52:44,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:52:44,111 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 7442 transitions. [2022-07-22 18:52:44,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-22 18:52:44,112 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:52:44,112 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:52:44,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-22 18:52:44,112 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:52:44,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:52:44,113 INFO L85 PathProgramCache]: Analyzing trace with hash 931032642, now seen corresponding path program 1 times [2022-07-22 18:52:44,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:52:44,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393653246] [2022-07-22 18:52:44,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:52:44,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:52:44,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:52:44,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:52:44,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:52:44,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393653246] [2022-07-22 18:52:44,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393653246] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:52:44,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:52:44,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 18:52:44,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374922668] [2022-07-22 18:52:44,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:52:44,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 18:52:44,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:52:44,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 18:52:44,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-22 18:52:44,394 INFO L87 Difference]: Start difference. First operand 5089 states and 7442 transitions. Second operand has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:05,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:53:05,854 INFO L93 Difference]: Finished difference Result 30572 states and 45038 transitions. [2022-07-22 18:53:05,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 18:53:05,855 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2022-07-22 18:53:05,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:53:05,893 INFO L225 Difference]: With dead ends: 30572 [2022-07-22 18:53:05,894 INFO L226 Difference]: Without dead ends: 29406 [2022-07-22 18:53:05,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-07-22 18:53:05,913 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 1686 mSDsluCounter, 3810 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1686 SdHoareTripleChecker+Valid, 4402 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:53:05,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1686 Valid, 4402 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:53:05,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29406 states. [2022-07-22 18:53:09,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29406 to 5073. [2022-07-22 18:53:09,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5073 states, 5072 states have (on average 1.4623422712933754) internal successors, (7417), 5072 states have internal predecessors, (7417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:09,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5073 states to 5073 states and 7417 transitions. [2022-07-22 18:53:09,687 INFO L78 Accepts]: Start accepts. Automaton has 5073 states and 7417 transitions. Word has length 123 [2022-07-22 18:53:09,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:53:09,687 INFO L495 AbstractCegarLoop]: Abstraction has 5073 states and 7417 transitions. [2022-07-22 18:53:09,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:09,688 INFO L276 IsEmpty]: Start isEmpty. Operand 5073 states and 7417 transitions. [2022-07-22 18:53:09,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-22 18:53:09,688 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:53:09,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:53:09,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-22 18:53:09,689 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:53:09,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:53:09,689 INFO L85 PathProgramCache]: Analyzing trace with hash -480767036, now seen corresponding path program 1 times [2022-07-22 18:53:09,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:53:09,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683851587] [2022-07-22 18:53:09,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:53:09,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:53:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:53:09,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:53:09,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:53:09,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683851587] [2022-07-22 18:53:09,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683851587] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:53:09,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:53:09,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 18:53:09,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927064695] [2022-07-22 18:53:09,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:53:09,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 18:53:09,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:53:09,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 18:53:09,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:53:09,936 INFO L87 Difference]: Start difference. First operand 5073 states and 7417 transitions. Second operand has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:25,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:53:25,829 INFO L93 Difference]: Finished difference Result 20835 states and 30661 transitions. [2022-07-22 18:53:25,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 18:53:25,830 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2022-07-22 18:53:25,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:53:25,854 INFO L225 Difference]: With dead ends: 20835 [2022-07-22 18:53:25,854 INFO L226 Difference]: Without dead ends: 19649 [2022-07-22 18:53:25,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-07-22 18:53:25,861 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 2043 mSDsluCounter, 1883 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2043 SdHoareTripleChecker+Valid, 2418 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:53:25,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2043 Valid, 2418 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:53:25,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19649 states. [2022-07-22 18:53:29,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19649 to 5032. [2022-07-22 18:53:29,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5032 states, 5031 states have (on average 1.4635261379447426) internal successors, (7363), 5031 states have internal predecessors, (7363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:29,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5032 states to 5032 states and 7363 transitions. [2022-07-22 18:53:29,864 INFO L78 Accepts]: Start accepts. Automaton has 5032 states and 7363 transitions. Word has length 123 [2022-07-22 18:53:29,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:53:29,864 INFO L495 AbstractCegarLoop]: Abstraction has 5032 states and 7363 transitions. [2022-07-22 18:53:29,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:29,865 INFO L276 IsEmpty]: Start isEmpty. Operand 5032 states and 7363 transitions. [2022-07-22 18:53:29,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-22 18:53:29,876 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:53:29,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:53:29,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-22 18:53:29,892 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:53:29,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:53:29,892 INFO L85 PathProgramCache]: Analyzing trace with hash 910555589, now seen corresponding path program 1 times [2022-07-22 18:53:29,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:53:29,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255421525] [2022-07-22 18:53:29,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:53:29,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:53:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:53:30,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:53:30,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:53:30,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255421525] [2022-07-22 18:53:30,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255421525] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:53:30,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:53:30,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 18:53:30,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595227613] [2022-07-22 18:53:30,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:53:30,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 18:53:30,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:53:30,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 18:53:30,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-22 18:53:30,206 INFO L87 Difference]: Start difference. First operand 5032 states and 7363 transitions. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:55,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:53:55,437 INFO L93 Difference]: Finished difference Result 30292 states and 44664 transitions. [2022-07-22 18:53:55,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 18:53:55,438 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2022-07-22 18:53:55,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:53:55,472 INFO L225 Difference]: With dead ends: 30292 [2022-07-22 18:53:55,472 INFO L226 Difference]: Without dead ends: 29116 [2022-07-22 18:53:55,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2022-07-22 18:53:55,480 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 1420 mSDsluCounter, 2403 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 2979 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:53:55,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1420 Valid, 2979 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:53:55,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29116 states. [2022-07-22 18:53:59,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29116 to 4996. [2022-07-22 18:53:59,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4996 states, 4995 states have (on average 1.4646646646646646) internal successors, (7316), 4995 states have internal predecessors, (7316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:59,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4996 states to 4996 states and 7316 transitions. [2022-07-22 18:53:59,966 INFO L78 Accepts]: Start accepts. Automaton has 4996 states and 7316 transitions. Word has length 123 [2022-07-22 18:53:59,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:53:59,966 INFO L495 AbstractCegarLoop]: Abstraction has 4996 states and 7316 transitions. [2022-07-22 18:53:59,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:59,967 INFO L276 IsEmpty]: Start isEmpty. Operand 4996 states and 7316 transitions. [2022-07-22 18:53:59,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-22 18:53:59,967 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:53:59,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:53:59,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-22 18:53:59,968 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:53:59,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:53:59,968 INFO L85 PathProgramCache]: Analyzing trace with hash -357902790, now seen corresponding path program 1 times [2022-07-22 18:53:59,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:53:59,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114631632] [2022-07-22 18:53:59,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:53:59,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:54:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:54:00,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:54:00,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:54:00,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114631632] [2022-07-22 18:54:00,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114631632] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:54:00,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:54:00,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 18:54:00,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132071897] [2022-07-22 18:54:00,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:54:00,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 18:54:00,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:54:00,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 18:54:00,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:54:00,249 INFO L87 Difference]: Start difference. First operand 4996 states and 7316 transitions. Second operand has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:18,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:54:18,783 INFO L93 Difference]: Finished difference Result 20601 states and 30361 transitions. [2022-07-22 18:54:18,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 18:54:18,783 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-07-22 18:54:18,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:54:18,803 INFO L225 Difference]: With dead ends: 20601 [2022-07-22 18:54:18,803 INFO L226 Difference]: Without dead ends: 19445 [2022-07-22 18:54:18,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-07-22 18:54:18,807 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 2016 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2016 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:54:18,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2016 Valid, 2107 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:54:18,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19445 states. [2022-07-22 18:54:23,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19445 to 4947. [2022-07-22 18:54:23,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4947 states, 4946 states have (on average 1.4666397088556409) internal successors, (7254), 4946 states have internal predecessors, (7254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:23,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4947 states to 4947 states and 7254 transitions. [2022-07-22 18:54:23,482 INFO L78 Accepts]: Start accepts. Automaton has 4947 states and 7254 transitions. Word has length 124 [2022-07-22 18:54:23,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:54:23,482 INFO L495 AbstractCegarLoop]: Abstraction has 4947 states and 7254 transitions. [2022-07-22 18:54:23,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:23,482 INFO L276 IsEmpty]: Start isEmpty. Operand 4947 states and 7254 transitions. [2022-07-22 18:54:23,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-22 18:54:23,483 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:54:23,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:54:23,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-22 18:54:23,483 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:54:23,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:54:23,483 INFO L85 PathProgramCache]: Analyzing trace with hash -739623582, now seen corresponding path program 1 times [2022-07-22 18:54:23,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:54:23,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635247524] [2022-07-22 18:54:23,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:54:23,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:54:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:54:25,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:54:25,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:54:25,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635247524] [2022-07-22 18:54:25,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635247524] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:54:25,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:54:25,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-07-22 18:54:25,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194091193] [2022-07-22 18:54:25,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:54:25,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-22 18:54:25,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:54:25,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-22 18:54:25,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1681, Unknown=0, NotChecked=0, Total=1806 [2022-07-22 18:54:25,138 INFO L87 Difference]: Start difference. First operand 4947 states and 7254 transitions. Second operand has 43 states, 43 states have (on average 2.883720930232558) internal successors, (124), 43 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:55:19,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:55:19,404 INFO L93 Difference]: Finished difference Result 49242 states and 72616 transitions. [2022-07-22 18:55:19,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-22 18:55:19,405 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.883720930232558) internal successors, (124), 43 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-07-22 18:55:19,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:55:19,464 INFO L225 Difference]: With dead ends: 49242 [2022-07-22 18:55:19,464 INFO L226 Difference]: Without dead ends: 44428 [2022-07-22 18:55:19,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1007, Invalid=5635, Unknown=0, NotChecked=0, Total=6642 [2022-07-22 18:55:19,480 INFO L413 NwaCegarLoop]: 1019 mSDtfsCounter, 2690 mSDsluCounter, 25478 mSDsCounter, 0 mSdLazyCounter, 16609 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2690 SdHoareTripleChecker+Valid, 26497 SdHoareTripleChecker+Invalid, 16707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 16609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-07-22 18:55:19,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2690 Valid, 26497 Invalid, 16707 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [98 Valid, 16609 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-07-22 18:55:19,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44428 states. [2022-07-22 18:55:24,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44428 to 4982. [2022-07-22 18:55:24,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4982 states, 4981 states have (on average 1.464766111222646) internal successors, (7296), 4981 states have internal predecessors, (7296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:55:24,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4982 states to 4982 states and 7296 transitions. [2022-07-22 18:55:24,529 INFO L78 Accepts]: Start accepts. Automaton has 4982 states and 7296 transitions. Word has length 124 [2022-07-22 18:55:24,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:55:24,529 INFO L495 AbstractCegarLoop]: Abstraction has 4982 states and 7296 transitions. [2022-07-22 18:55:24,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.883720930232558) internal successors, (124), 43 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:55:24,529 INFO L276 IsEmpty]: Start isEmpty. Operand 4982 states and 7296 transitions. [2022-07-22 18:55:24,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-22 18:55:24,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:55:24,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:55:24,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-22 18:55:24,530 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:55:24,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:55:24,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1548225802, now seen corresponding path program 1 times [2022-07-22 18:55:24,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:55:24,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785579388] [2022-07-22 18:55:24,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:55:24,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:55:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:55:24,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:55:24,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:55:24,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785579388] [2022-07-22 18:55:24,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785579388] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:55:24,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:55:24,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 18:55:24,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213579527] [2022-07-22 18:55:24,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:55:24,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 18:55:24,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:55:24,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 18:55:24,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-22 18:55:24,848 INFO L87 Difference]: Start difference. First operand 4982 states and 7296 transitions. Second operand has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 14 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)