./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-1.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 686ecb1010b71c794fc4e873862aa984c2fdfbe32a68bd8271c0851d6420f945 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:30:00,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:30:00,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:30:00,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:30:00,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:30:00,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:30:00,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:30:00,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:30:00,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:30:00,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:30:00,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:30:00,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:30:00,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:30:00,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:30:00,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:30:00,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:30:00,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:30:00,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:30:00,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:30:00,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:30:00,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:30:00,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:30:00,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:30:00,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:30:00,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:30:00,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:30:00,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:30:00,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:30:00,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:30:00,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:30:00,607 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:30:00,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:30:00,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:30:00,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:30:00,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:30:00,611 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:30:00,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:30:00,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:30:00,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:30:00,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:30:00,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:30:00,616 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 02:30:00,656 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:30:00,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:30:00,658 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:30:00,659 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:30:00,659 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:30:00,660 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:30:00,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:30:00,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:30:00,661 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:30:00,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:30:00,662 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:30:00,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 02:30:00,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:30:00,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:30:00,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:30:00,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:30:00,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:30:00,664 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:30:00,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:30:00,664 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:30:00,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:30:00,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:30:00,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:30:00,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:30:00,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:30:00,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:30:00,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:30:00,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:30:00,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 02:30:00,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 02:30:00,666 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:30:00,666 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:30:00,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:30:00,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:30:00,667 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 686ecb1010b71c794fc4e873862aa984c2fdfbe32a68bd8271c0851d6420f945 [2021-12-16 02:30:00,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:30:00,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:30:00,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:30:00,961 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:30:00,962 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:30:00,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-1.c [2021-12-16 02:30:01,039 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5370e1fb/6cf4441ca0f74aaa8e019c5a01fea690/FLAGed02daa74 [2021-12-16 02:30:01,480 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:30:01,480 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-1.c [2021-12-16 02:30:01,495 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5370e1fb/6cf4441ca0f74aaa8e019c5a01fea690/FLAGed02daa74 [2021-12-16 02:30:01,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5370e1fb/6cf4441ca0f74aaa8e019c5a01fea690 [2021-12-16 02:30:01,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:30:01,511 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:30:01,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:30:01,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:30:01,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:30:01,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:30:01" (1/1) ... [2021-12-16 02:30:01,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29800f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:30:01, skipping insertion in model container [2021-12-16 02:30:01,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:30:01" (1/1) ... [2021-12-16 02:30:01,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:30:01,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:30:01,730 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-1.c[913,926] [2021-12-16 02:30:01,811 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-1.c[5977,5990] [2021-12-16 02:30:01,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:30:01,933 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:30:01,950 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-1.c[913,926] [2021-12-16 02:30:01,973 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-1.c[5977,5990] [2021-12-16 02:30:02,011 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:30:02,035 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:30:02,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:30:02 WrapperNode [2021-12-16 02:30:02,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:30:02,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:30:02,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:30:02,038 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:30:02,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:30:02" (1/1) ... [2021-12-16 02:30:02,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:30:02" (1/1) ... [2021-12-16 02:30:02,116 INFO L137 Inliner]: procedures = 62, calls = 69, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 765 [2021-12-16 02:30:02,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:30:02,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:30:02,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:30:02,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:30:02,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:30:02" (1/1) ... [2021-12-16 02:30:02,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:30:02" (1/1) ... [2021-12-16 02:30:02,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:30:02" (1/1) ... [2021-12-16 02:30:02,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:30:02" (1/1) ... [2021-12-16 02:30:02,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:30:02" (1/1) ... [2021-12-16 02:30:02,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:30:02" (1/1) ... [2021-12-16 02:30:02,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:30:02" (1/1) ... [2021-12-16 02:30:02,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:30:02,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:30:02,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:30:02,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:30:02,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:30:02" (1/1) ... [2021-12-16 02:30:02,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:30:02,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:30:02,249 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 02:30:02,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 02:30:02,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:30:02,290 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-16 02:30:02,290 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-16 02:30:02,290 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2021-12-16 02:30:02,290 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2021-12-16 02:30:02,290 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-12-16 02:30:02,291 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-12-16 02:30:02,291 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-12-16 02:30:02,291 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-12-16 02:30:02,291 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-12-16 02:30:02,292 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-12-16 02:30:02,292 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-12-16 02:30:02,292 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-12-16 02:30:02,292 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-12-16 02:30:02,292 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-12-16 02:30:02,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 02:30:02,293 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-12-16 02:30:02,293 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-12-16 02:30:02,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:30:02,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:30:02,293 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-12-16 02:30:02,294 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-12-16 02:30:02,399 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:30:02,416 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:30:03,030 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:30:03,057 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:30:03,057 INFO L301 CfgBuilder]: Removed 14 assume(true) statements. [2021-12-16 02:30:03,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:30:03 BoogieIcfgContainer [2021-12-16 02:30:03,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:30:03,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:30:03,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:30:03,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:30:03,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:30:01" (1/3) ... [2021-12-16 02:30:03,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b34805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:30:03, skipping insertion in model container [2021-12-16 02:30:03,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:30:02" (2/3) ... [2021-12-16 02:30:03,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b34805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:30:03, skipping insertion in model container [2021-12-16 02:30:03,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:30:03" (3/3) ... [2021-12-16 02:30:03,074 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.07.cil-1.c [2021-12-16 02:30:03,079 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:30:03,079 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 02:30:03,123 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:30:03,129 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 02:30:03,129 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 02:30:03,152 INFO L276 IsEmpty]: Start isEmpty. Operand has 329 states, 290 states have (on average 1.6241379310344828) internal successors, (471), 295 states have internal predecessors, (471), 27 states have call successors, (27), 9 states have call predecessors, (27), 9 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-16 02:30:03,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-16 02:30:03,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:30:03,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:30:03,161 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:30:03,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:30:03,166 INFO L85 PathProgramCache]: Analyzing trace with hash 679233758, now seen corresponding path program 1 times [2021-12-16 02:30:03,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:30:03,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140870575] [2021-12-16 02:30:03,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:30:03,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:30:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:03,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 02:30:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:03,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 02:30:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:03,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:30:03,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:30:03,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140870575] [2021-12-16 02:30:03,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140870575] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:30:03,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:30:03,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 02:30:03,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528528144] [2021-12-16 02:30:03,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:30:03,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 02:30:03,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:30:03,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 02:30:03,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 02:30:03,510 INFO L87 Difference]: Start difference. First operand has 329 states, 290 states have (on average 1.6241379310344828) internal successors, (471), 295 states have internal predecessors, (471), 27 states have call successors, (27), 9 states have call predecessors, (27), 9 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 02:30:03,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:30:03,848 INFO L93 Difference]: Finished difference Result 708 states and 1128 transitions. [2021-12-16 02:30:03,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 02:30:03,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2021-12-16 02:30:03,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:30:03,869 INFO L225 Difference]: With dead ends: 708 [2021-12-16 02:30:03,870 INFO L226 Difference]: Without dead ends: 389 [2021-12-16 02:30:03,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 02:30:03,878 INFO L933 BasicCegarLoop]: 505 mSDtfsCounter, 644 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 02:30:03,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 825 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 02:30:03,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-12-16 02:30:03,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 383. [2021-12-16 02:30:03,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 339 states have (on average 1.4985250737463127) internal successors, (508), 343 states have internal predecessors, (508), 31 states have call successors, (31), 11 states have call predecessors, (31), 11 states have return successors, (35), 29 states have call predecessors, (35), 29 states have call successors, (35) [2021-12-16 02:30:03,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 574 transitions. [2021-12-16 02:30:03,978 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 574 transitions. Word has length 44 [2021-12-16 02:30:03,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:30:03,978 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 574 transitions. [2021-12-16 02:30:03,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 02:30:03,979 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 574 transitions. [2021-12-16 02:30:03,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-16 02:30:03,989 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:30:03,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:30:03,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 02:30:03,990 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:30:03,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:30:03,992 INFO L85 PathProgramCache]: Analyzing trace with hash -847205656, now seen corresponding path program 1 times [2021-12-16 02:30:03,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:30:03,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580315347] [2021-12-16 02:30:03,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:30:03,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:30:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:04,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 02:30:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:04,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 02:30:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:04,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:30:04,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:30:04,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580315347] [2021-12-16 02:30:04,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580315347] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:30:04,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:30:04,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 02:30:04,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559971712] [2021-12-16 02:30:04,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:30:04,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 02:30:04,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:30:04,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 02:30:04,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 02:30:04,136 INFO L87 Difference]: Start difference. First operand 383 states and 574 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 02:30:04,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:30:04,489 INFO L93 Difference]: Finished difference Result 631 states and 914 transitions. [2021-12-16 02:30:04,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 02:30:04,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2021-12-16 02:30:04,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:30:04,501 INFO L225 Difference]: With dead ends: 631 [2021-12-16 02:30:04,502 INFO L226 Difference]: Without dead ends: 507 [2021-12-16 02:30:04,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 02:30:04,507 INFO L933 BasicCegarLoop]: 529 mSDtfsCounter, 268 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 02:30:04,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 1071 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 02:30:04,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-12-16 02:30:04,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 450. [2021-12-16 02:30:04,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 400 states have (on average 1.48) internal successors, (592), 404 states have internal predecessors, (592), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (38), 32 states have call predecessors, (38), 32 states have call successors, (38) [2021-12-16 02:30:04,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 664 transitions. [2021-12-16 02:30:04,561 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 664 transitions. Word has length 45 [2021-12-16 02:30:04,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:30:04,561 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 664 transitions. [2021-12-16 02:30:04,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 02:30:04,562 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 664 transitions. [2021-12-16 02:30:04,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-16 02:30:04,566 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:30:04,566 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:30:04,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 02:30:04,567 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:30:04,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:30:04,567 INFO L85 PathProgramCache]: Analyzing trace with hash -2131563117, now seen corresponding path program 1 times [2021-12-16 02:30:04,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:30:04,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993339093] [2021-12-16 02:30:04,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:30:04,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:30:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:04,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 02:30:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:04,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 02:30:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:04,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:30:04,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:30:04,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993339093] [2021-12-16 02:30:04,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993339093] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:30:04,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:30:04,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 02:30:04,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527495931] [2021-12-16 02:30:04,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:30:04,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 02:30:04,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:30:04,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 02:30:04,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 02:30:04,681 INFO L87 Difference]: Start difference. First operand 450 states and 664 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 02:30:04,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:30:04,842 INFO L93 Difference]: Finished difference Result 858 states and 1223 transitions. [2021-12-16 02:30:04,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 02:30:04,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2021-12-16 02:30:04,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:30:04,847 INFO L225 Difference]: With dead ends: 858 [2021-12-16 02:30:04,847 INFO L226 Difference]: Without dead ends: 667 [2021-12-16 02:30:04,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 02:30:04,849 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 653 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:30:04,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [674 Valid, 824 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 02:30:04,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-12-16 02:30:04,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 615. [2021-12-16 02:30:04,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 546 states have (on average 1.4322344322344323) internal successors, (782), 553 states have internal predecessors, (782), 45 states have call successors, (45), 21 states have call predecessors, (45), 22 states have return successors, (55), 41 states have call predecessors, (55), 43 states have call successors, (55) [2021-12-16 02:30:04,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 882 transitions. [2021-12-16 02:30:04,884 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 882 transitions. Word has length 45 [2021-12-16 02:30:04,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:30:04,884 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 882 transitions. [2021-12-16 02:30:04,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 02:30:04,885 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 882 transitions. [2021-12-16 02:30:04,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-16 02:30:04,886 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:30:04,886 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:30:04,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 02:30:04,887 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:30:04,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:30:04,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1411746514, now seen corresponding path program 1 times [2021-12-16 02:30:04,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:30:04,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507209377] [2021-12-16 02:30:04,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:30:04,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:30:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:04,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 02:30:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:04,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 02:30:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:04,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 02:30:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:04,949 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-16 02:30:04,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:30:04,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507209377] [2021-12-16 02:30:04,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507209377] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:30:04,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:30:04,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 02:30:04,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791779635] [2021-12-16 02:30:04,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:30:04,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 02:30:04,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:30:04,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 02:30:04,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 02:30:04,954 INFO L87 Difference]: Start difference. First operand 615 states and 882 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 02:30:05,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:30:05,269 INFO L93 Difference]: Finished difference Result 1199 states and 1667 transitions. [2021-12-16 02:30:05,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 02:30:05,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2021-12-16 02:30:05,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:30:05,276 INFO L225 Difference]: With dead ends: 1199 [2021-12-16 02:30:05,276 INFO L226 Difference]: Without dead ends: 843 [2021-12-16 02:30:05,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 02:30:05,285 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 252 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 02:30:05,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 1103 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 02:30:05,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2021-12-16 02:30:05,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 805. [2021-12-16 02:30:05,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 712 states have (on average 1.3792134831460674) internal successors, (982), 721 states have internal predecessors, (982), 59 states have call successors, (59), 29 states have call predecessors, (59), 32 states have return successors, (79), 55 states have call predecessors, (79), 57 states have call successors, (79) [2021-12-16 02:30:05,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1120 transitions. [2021-12-16 02:30:05,331 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1120 transitions. Word has length 62 [2021-12-16 02:30:05,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:30:05,333 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 1120 transitions. [2021-12-16 02:30:05,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 02:30:05,333 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1120 transitions. [2021-12-16 02:30:05,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-16 02:30:05,337 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:30:05,338 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:30:05,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 02:30:05,339 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:30:05,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:30:05,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1771502045, now seen corresponding path program 1 times [2021-12-16 02:30:05,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:30:05,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948796522] [2021-12-16 02:30:05,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:30:05,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:30:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:05,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 02:30:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:05,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:30:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:05,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-16 02:30:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:05,441 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-16 02:30:05,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:30:05,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948796522] [2021-12-16 02:30:05,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948796522] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:30:05,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:30:05,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 02:30:05,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906964663] [2021-12-16 02:30:05,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:30:05,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 02:30:05,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:30:05,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 02:30:05,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 02:30:05,444 INFO L87 Difference]: Start difference. First operand 805 states and 1120 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 02:30:05,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:30:05,599 INFO L93 Difference]: Finished difference Result 1458 states and 1973 transitions. [2021-12-16 02:30:05,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 02:30:05,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2021-12-16 02:30:05,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:30:05,606 INFO L225 Difference]: With dead ends: 1458 [2021-12-16 02:30:05,606 INFO L226 Difference]: Without dead ends: 1004 [2021-12-16 02:30:05,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 02:30:05,608 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 640 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:30:05,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 821 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 02:30:05,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-12-16 02:30:05,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 949. [2021-12-16 02:30:05,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 840 states have (on average 1.348809523809524) internal successors, (1133), 851 states have internal predecessors, (1133), 67 states have call successors, (67), 35 states have call predecessors, (67), 40 states have return successors, (93), 63 states have call predecessors, (93), 65 states have call successors, (93) [2021-12-16 02:30:05,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1293 transitions. [2021-12-16 02:30:05,651 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1293 transitions. Word has length 67 [2021-12-16 02:30:05,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:30:05,651 INFO L470 AbstractCegarLoop]: Abstraction has 949 states and 1293 transitions. [2021-12-16 02:30:05,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 02:30:05,652 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1293 transitions. [2021-12-16 02:30:05,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-16 02:30:05,654 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:30:05,654 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:30:05,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 02:30:05,655 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:30:05,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:30:05,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1913188561, now seen corresponding path program 1 times [2021-12-16 02:30:05,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:30:05,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665205942] [2021-12-16 02:30:05,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:30:05,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:30:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:05,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 02:30:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:05,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 02:30:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:05,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 02:30:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:05,783 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 02:30:05,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:30:05,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665205942] [2021-12-16 02:30:05,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665205942] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 02:30:05,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721781866] [2021-12-16 02:30:05,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:30:05,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:30:05,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:30:05,787 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 02:30:05,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 02:30:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:05,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 02:30:05,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:30:06,156 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:30:06,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 02:30:06,258 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-16 02:30:06,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721781866] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-16 02:30:06,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-16 02:30:06,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2021-12-16 02:30:06,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893956491] [2021-12-16 02:30:06,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:30:06,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 02:30:06,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:30:06,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 02:30:06,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:30:06,260 INFO L87 Difference]: Start difference. First operand 949 states and 1293 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 02:30:06,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:30:06,376 INFO L93 Difference]: Finished difference Result 1005 states and 1361 transitions. [2021-12-16 02:30:06,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 02:30:06,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2021-12-16 02:30:06,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:30:06,381 INFO L225 Difference]: With dead ends: 1005 [2021-12-16 02:30:06,381 INFO L226 Difference]: Without dead ends: 1002 [2021-12-16 02:30:06,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 02:30:06,382 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 869 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:30:06,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 575 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 02:30:06,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2021-12-16 02:30:06,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 948. [2021-12-16 02:30:06,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 840 states have (on average 1.3464285714285715) internal successors, (1131), 850 states have internal predecessors, (1131), 66 states have call successors, (66), 35 states have call predecessors, (66), 40 states have return successors, (93), 63 states have call predecessors, (93), 65 states have call successors, (93) [2021-12-16 02:30:06,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1290 transitions. [2021-12-16 02:30:06,422 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1290 transitions. Word has length 68 [2021-12-16 02:30:06,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:30:06,423 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 1290 transitions. [2021-12-16 02:30:06,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 02:30:06,423 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1290 transitions. [2021-12-16 02:30:06,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-16 02:30:06,425 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:30:06,425 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:30:06,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 02:30:06,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-16 02:30:06,640 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:30:06,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:30:06,640 INFO L85 PathProgramCache]: Analyzing trace with hash -821723040, now seen corresponding path program 1 times [2021-12-16 02:30:06,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:30:06,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206310597] [2021-12-16 02:30:06,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:30:06,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:30:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:06,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 02:30:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:06,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 02:30:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:06,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 02:30:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:06,710 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 02:30:06,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:30:06,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206310597] [2021-12-16 02:30:06,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206310597] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 02:30:06,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891787804] [2021-12-16 02:30:06,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:30:06,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:30:06,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:30:06,712 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 02:30:06,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 02:30:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:06,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 02:30:06,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:30:07,128 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:30:07,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 02:30:07,263 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-16 02:30:07,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891787804] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 02:30:07,264 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 02:30:07,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2021-12-16 02:30:07,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300472487] [2021-12-16 02:30:07,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 02:30:07,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 02:30:07,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:30:07,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 02:30:07,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:30:07,266 INFO L87 Difference]: Start difference. First operand 948 states and 1290 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2021-12-16 02:30:08,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:30:08,541 INFO L93 Difference]: Finished difference Result 2648 states and 3510 transitions. [2021-12-16 02:30:08,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-12-16 02:30:08,541 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2021-12-16 02:30:08,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:30:08,552 INFO L225 Difference]: With dead ends: 2648 [2021-12-16 02:30:08,553 INFO L226 Difference]: Without dead ends: 2104 [2021-12-16 02:30:08,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2021-12-16 02:30:08,557 INFO L933 BasicCegarLoop]: 613 mSDtfsCounter, 1007 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 3162 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 02:30:08,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1035 Valid, 3162 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 02:30:08,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2104 states. [2021-12-16 02:30:08,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2104 to 1337. [2021-12-16 02:30:08,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1190 states have (on average 1.315126050420168) internal successors, (1565), 1208 states have internal predecessors, (1565), 86 states have call successors, (86), 49 states have call predecessors, (86), 59 states have return successors, (127), 80 states have call predecessors, (127), 85 states have call successors, (127) [2021-12-16 02:30:08,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1778 transitions. [2021-12-16 02:30:08,649 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1778 transitions. Word has length 69 [2021-12-16 02:30:08,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:30:08,649 INFO L470 AbstractCegarLoop]: Abstraction has 1337 states and 1778 transitions. [2021-12-16 02:30:08,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2021-12-16 02:30:08,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1778 transitions. [2021-12-16 02:30:08,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-16 02:30:08,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:30:08,657 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:30:08,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 02:30:08,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-16 02:30:08,883 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:30:08,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:30:08,884 INFO L85 PathProgramCache]: Analyzing trace with hash 703078240, now seen corresponding path program 1 times [2021-12-16 02:30:08,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:30:08,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096483144] [2021-12-16 02:30:08,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:30:08,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:30:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:08,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 02:30:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:08,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 02:30:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:08,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 02:30:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:08,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 02:30:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:08,964 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-16 02:30:08,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:30:08,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096483144] [2021-12-16 02:30:08,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096483144] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 02:30:08,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064069743] [2021-12-16 02:30:08,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:30:08,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:30:08,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:30:08,966 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 02:30:08,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 02:30:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:09,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 02:30:09,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:30:09,264 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-16 02:30:09,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 02:30:09,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064069743] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:30:09,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 02:30:09,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-12-16 02:30:09,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408686954] [2021-12-16 02:30:09,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:30:09,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:30:09,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:30:09,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:30:09,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:30:09,267 INFO L87 Difference]: Start difference. First operand 1337 states and 1778 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-16 02:30:09,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:30:09,312 INFO L93 Difference]: Finished difference Result 2060 states and 2716 transitions. [2021-12-16 02:30:09,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:30:09,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2021-12-16 02:30:09,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:30:09,318 INFO L225 Difference]: With dead ends: 2060 [2021-12-16 02:30:09,319 INFO L226 Difference]: Without dead ends: 1215 [2021-12-16 02:30:09,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:30:09,322 INFO L933 BasicCegarLoop]: 514 mSDtfsCounter, 443 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:30:09,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 589 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:30:09,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2021-12-16 02:30:09,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1200. [2021-12-16 02:30:09,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1200 states, 1069 states have (on average 1.3161833489242283) internal successors, (1407), 1086 states have internal predecessors, (1407), 78 states have call successors, (78), 43 states have call predecessors, (78), 51 states have return successors, (113), 71 states have call predecessors, (113), 77 states have call successors, (113) [2021-12-16 02:30:09,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1598 transitions. [2021-12-16 02:30:09,405 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1598 transitions. Word has length 88 [2021-12-16 02:30:09,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:30:09,406 INFO L470 AbstractCegarLoop]: Abstraction has 1200 states and 1598 transitions. [2021-12-16 02:30:09,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-16 02:30:09,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1598 transitions. [2021-12-16 02:30:09,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-16 02:30:09,409 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:30:09,409 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:30:09,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 02:30:09,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:30:09,636 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:30:09,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:30:09,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1962786176, now seen corresponding path program 1 times [2021-12-16 02:30:09,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:30:09,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212265393] [2021-12-16 02:30:09,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:30:09,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:30:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:09,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 02:30:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:09,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 02:30:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:09,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 02:30:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:09,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 02:30:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:09,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 02:30:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:09,735 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-16 02:30:09,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:30:09,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212265393] [2021-12-16 02:30:09,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212265393] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 02:30:09,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051994160] [2021-12-16 02:30:09,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:30:09,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:30:09,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:30:09,738 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 02:30:09,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 02:30:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:09,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 02:30:09,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:30:10,000 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-16 02:30:10,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 02:30:10,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051994160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:30:10,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 02:30:10,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-12-16 02:30:10,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567763325] [2021-12-16 02:30:10,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:30:10,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:30:10,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:30:10,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:30:10,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:30:10,002 INFO L87 Difference]: Start difference. First operand 1200 states and 1598 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-16 02:30:10,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:30:10,044 INFO L93 Difference]: Finished difference Result 1579 states and 2066 transitions. [2021-12-16 02:30:10,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:30:10,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2021-12-16 02:30:10,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:30:10,047 INFO L225 Difference]: With dead ends: 1579 [2021-12-16 02:30:10,047 INFO L226 Difference]: Without dead ends: 253 [2021-12-16 02:30:10,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:30:10,051 INFO L933 BasicCegarLoop]: 528 mSDtfsCounter, 62 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:30:10,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 986 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:30:10,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-12-16 02:30:10,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2021-12-16 02:30:10,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 225 states have (on average 1.551111111111111) internal successors, (349), 226 states have internal predecessors, (349), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-16 02:30:10,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 391 transitions. [2021-12-16 02:30:10,063 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 391 transitions. Word has length 103 [2021-12-16 02:30:10,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:30:10,063 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 391 transitions. [2021-12-16 02:30:10,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-16 02:30:10,064 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 391 transitions. [2021-12-16 02:30:10,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 02:30:10,065 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:30:10,065 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:30:10,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 02:30:10,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:30:10,279 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:30:10,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:30:10,280 INFO L85 PathProgramCache]: Analyzing trace with hash 366966274, now seen corresponding path program 1 times [2021-12-16 02:30:10,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:30:10,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912161778] [2021-12-16 02:30:10,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:30:10,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:30:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:10,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:30:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:10,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:30:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:10,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:30:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:10,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:30:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:10,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:30:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:10,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:30:10,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:30:10,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912161778] [2021-12-16 02:30:10,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912161778] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:30:10,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:30:10,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 02:30:10,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691809217] [2021-12-16 02:30:10,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:30:10,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 02:30:10,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:30:10,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 02:30:10,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 02:30:10,382 INFO L87 Difference]: Start difference. First operand 253 states and 391 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:30:11,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:30:11,155 INFO L93 Difference]: Finished difference Result 581 states and 913 transitions. [2021-12-16 02:30:11,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 02:30:11,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 02:30:11,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:30:11,158 INFO L225 Difference]: With dead ends: 581 [2021-12-16 02:30:11,158 INFO L226 Difference]: Without dead ends: 340 [2021-12-16 02:30:11,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:30:11,160 INFO L933 BasicCegarLoop]: 427 mSDtfsCounter, 650 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 02:30:11,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [669 Valid, 704 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 02:30:11,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-12-16 02:30:11,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 253. [2021-12-16 02:30:11,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 225 states have (on average 1.5466666666666666) internal successors, (348), 226 states have internal predecessors, (348), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-16 02:30:11,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 390 transitions. [2021-12-16 02:30:11,176 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 390 transitions. Word has length 123 [2021-12-16 02:30:11,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:30:11,176 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 390 transitions. [2021-12-16 02:30:11,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:30:11,176 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 390 transitions. [2021-12-16 02:30:11,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 02:30:11,177 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:30:11,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:30:11,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 02:30:11,178 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:30:11,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:30:11,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1796650300, now seen corresponding path program 1 times [2021-12-16 02:30:11,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:30:11,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323026075] [2021-12-16 02:30:11,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:30:11,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:30:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:11,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:30:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:11,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:30:11,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:11,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:30:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:11,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:30:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:11,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:30:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:11,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:30:11,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:30:11,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323026075] [2021-12-16 02:30:11,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323026075] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:30:11,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:30:11,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:30:11,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446113742] [2021-12-16 02:30:11,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:30:11,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:30:11,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:30:11,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:30:11,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:30:11,282 INFO L87 Difference]: Start difference. First operand 253 states and 390 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:30:12,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:30:12,869 INFO L93 Difference]: Finished difference Result 909 states and 1437 transitions. [2021-12-16 02:30:12,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 02:30:12,870 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 02:30:12,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:30:12,873 INFO L225 Difference]: With dead ends: 909 [2021-12-16 02:30:12,873 INFO L226 Difference]: Without dead ends: 672 [2021-12-16 02:30:12,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:30:12,875 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 978 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 02:30:12,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [992 Valid, 1232 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 02:30:12,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-12-16 02:30:12,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 499. [2021-12-16 02:30:12,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 448 states have (on average 1.5602678571428572) internal successors, (699), 450 states have internal predecessors, (699), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2021-12-16 02:30:12,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 776 transitions. [2021-12-16 02:30:12,900 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 776 transitions. Word has length 123 [2021-12-16 02:30:12,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:30:12,901 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 776 transitions. [2021-12-16 02:30:12,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:30:12,901 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 776 transitions. [2021-12-16 02:30:12,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 02:30:12,902 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:30:12,902 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:30:12,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 02:30:12,903 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:30:12,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:30:12,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1772752968, now seen corresponding path program 1 times [2021-12-16 02:30:12,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:30:12,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580608338] [2021-12-16 02:30:12,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:30:12,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:30:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:12,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:30:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:12,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:30:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:12,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:30:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:13,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:30:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:13,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:30:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:13,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:30:13,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:30:13,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580608338] [2021-12-16 02:30:13,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580608338] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:30:13,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:30:13,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:30:13,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581167620] [2021-12-16 02:30:13,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:30:13,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:30:13,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:30:13,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:30:13,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:30:13,028 INFO L87 Difference]: Start difference. First operand 499 states and 776 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:30:14,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:30:14,918 INFO L93 Difference]: Finished difference Result 1497 states and 2366 transitions. [2021-12-16 02:30:14,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:30:14,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 02:30:14,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:30:14,923 INFO L225 Difference]: With dead ends: 1497 [2021-12-16 02:30:14,923 INFO L226 Difference]: Without dead ends: 1014 [2021-12-16 02:30:14,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 02:30:14,925 INFO L933 BasicCegarLoop]: 648 mSDtfsCounter, 992 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 1940 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 02:30:14,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1006 Valid, 1936 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1940 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-16 02:30:14,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2021-12-16 02:30:14,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 728. [2021-12-16 02:30:14,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 654 states have (on average 1.5535168195718654) internal successors, (1016), 657 states have internal predecessors, (1016), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2021-12-16 02:30:14,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1127 transitions. [2021-12-16 02:30:14,961 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1127 transitions. Word has length 123 [2021-12-16 02:30:14,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:30:14,961 INFO L470 AbstractCegarLoop]: Abstraction has 728 states and 1127 transitions. [2021-12-16 02:30:14,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:30:14,962 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1127 transitions. [2021-12-16 02:30:14,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 02:30:14,963 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:30:14,963 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:30:14,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 02:30:14,964 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:30:14,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:30:14,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1132920314, now seen corresponding path program 1 times [2021-12-16 02:30:14,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:30:14,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126120218] [2021-12-16 02:30:14,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:30:14,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:30:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:14,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:30:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:15,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:30:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:15,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:30:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:15,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:30:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:15,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:30:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:15,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:30:15,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:30:15,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126120218] [2021-12-16 02:30:15,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126120218] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:30:15,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:30:15,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:30:15,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936563656] [2021-12-16 02:30:15,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:30:15,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:30:15,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:30:15,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:30:15,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:30:15,062 INFO L87 Difference]: Start difference. First operand 728 states and 1127 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:30:15,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:30:15,983 INFO L93 Difference]: Finished difference Result 1734 states and 2739 transitions. [2021-12-16 02:30:15,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:30:15,984 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 02:30:15,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:30:15,989 INFO L225 Difference]: With dead ends: 1734 [2021-12-16 02:30:15,990 INFO L226 Difference]: Without dead ends: 1022 [2021-12-16 02:30:15,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:30:15,994 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 759 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 02:30:15,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [774 Valid, 994 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 02:30:15,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2021-12-16 02:30:16,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 728. [2021-12-16 02:30:16,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 654 states have (on average 1.5489296636085628) internal successors, (1013), 657 states have internal predecessors, (1013), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2021-12-16 02:30:16,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1124 transitions. [2021-12-16 02:30:16,040 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1124 transitions. Word has length 123 [2021-12-16 02:30:16,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:30:16,040 INFO L470 AbstractCegarLoop]: Abstraction has 728 states and 1124 transitions. [2021-12-16 02:30:16,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:30:16,041 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1124 transitions. [2021-12-16 02:30:16,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 02:30:16,042 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:30:16,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:30:16,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 02:30:16,043 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:30:16,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:30:16,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1295338308, now seen corresponding path program 1 times [2021-12-16 02:30:16,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:30:16,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200051299] [2021-12-16 02:30:16,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:30:16,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:30:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:16,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:30:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:16,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:30:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:16,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:30:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:16,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:30:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:16,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:30:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:16,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:30:16,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:30:16,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200051299] [2021-12-16 02:30:16,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200051299] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:30:16,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:30:16,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:30:16,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530366567] [2021-12-16 02:30:16,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:30:16,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:30:16,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:30:16,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:30:16,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:30:16,152 INFO L87 Difference]: Start difference. First operand 728 states and 1124 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:30:17,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:30:17,858 INFO L93 Difference]: Finished difference Result 2358 states and 3703 transitions. [2021-12-16 02:30:17,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:30:17,859 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 02:30:17,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:30:17,867 INFO L225 Difference]: With dead ends: 2358 [2021-12-16 02:30:17,867 INFO L226 Difference]: Without dead ends: 1646 [2021-12-16 02:30:17,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 02:30:17,870 INFO L933 BasicCegarLoop]: 630 mSDtfsCounter, 979 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 1914 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 02:30:17,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [993 Valid, 1914 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1914 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 02:30:17,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2021-12-16 02:30:17,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1193. [2021-12-16 02:30:17,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 1073 states have (on average 1.543336439888164) internal successors, (1656), 1078 states have internal predecessors, (1656), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2021-12-16 02:30:17,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1839 transitions. [2021-12-16 02:30:17,949 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1839 transitions. Word has length 123 [2021-12-16 02:30:17,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:30:17,950 INFO L470 AbstractCegarLoop]: Abstraction has 1193 states and 1839 transitions. [2021-12-16 02:30:17,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:30:17,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1839 transitions. [2021-12-16 02:30:17,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 02:30:17,951 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:30:17,952 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:30:17,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 02:30:17,952 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:30:17,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:30:17,953 INFO L85 PathProgramCache]: Analyzing trace with hash -11804090, now seen corresponding path program 1 times [2021-12-16 02:30:17,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:30:17,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071399798] [2021-12-16 02:30:17,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:30:17,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:30:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:17,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:30:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:18,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:30:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:18,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:30:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:18,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:30:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:18,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:30:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:18,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:30:18,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:30:18,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071399798] [2021-12-16 02:30:18,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071399798] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:30:18,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:30:18,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:30:18,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627052124] [2021-12-16 02:30:18,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:30:18,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:30:18,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:30:18,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:30:18,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:30:18,061 INFO L87 Difference]: Start difference. First operand 1193 states and 1839 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:30:19,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:30:19,829 INFO L93 Difference]: Finished difference Result 4031 states and 6306 transitions. [2021-12-16 02:30:19,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:30:19,831 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 02:30:19,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:30:19,843 INFO L225 Difference]: With dead ends: 4031 [2021-12-16 02:30:19,843 INFO L226 Difference]: Without dead ends: 2854 [2021-12-16 02:30:19,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 02:30:19,848 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 978 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 1906 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 1909 SdHoareTripleChecker+Invalid, 1978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 02:30:19,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [992 Valid, 1909 Invalid, 1978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1906 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 02:30:19,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2021-12-16 02:30:19,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 2122. [2021-12-16 02:30:19,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 1910 states have (on average 1.5382198952879582) internal successors, (2938), 1919 states have internal predecessors, (2938), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2021-12-16 02:30:19,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 3271 transitions. [2021-12-16 02:30:19,978 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 3271 transitions. Word has length 123 [2021-12-16 02:30:19,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:30:19,978 INFO L470 AbstractCegarLoop]: Abstraction has 2122 states and 3271 transitions. [2021-12-16 02:30:19,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:30:19,979 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 3271 transitions. [2021-12-16 02:30:19,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 02:30:19,981 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:30:19,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:30:19,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 02:30:19,981 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:30:19,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:30:19,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1885692676, now seen corresponding path program 1 times [2021-12-16 02:30:19,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:30:19,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845234033] [2021-12-16 02:30:19,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:30:19,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:30:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:20,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:30:20,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:20,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:30:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:20,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:30:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:20,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:30:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:20,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:30:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:20,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:30:20,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:30:20,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845234033] [2021-12-16 02:30:20,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845234033] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:30:20,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:30:20,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:30:20,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478564097] [2021-12-16 02:30:20,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:30:20,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:30:20,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:30:20,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:30:20,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:30:20,085 INFO L87 Difference]: Start difference. First operand 2122 states and 3271 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:30:20,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:30:20,898 INFO L93 Difference]: Finished difference Result 4968 states and 7778 transitions. [2021-12-16 02:30:20,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:30:20,899 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 02:30:20,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:30:20,912 INFO L225 Difference]: With dead ends: 4968 [2021-12-16 02:30:20,913 INFO L226 Difference]: Without dead ends: 2862 [2021-12-16 02:30:20,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:30:20,921 INFO L933 BasicCegarLoop]: 395 mSDtfsCounter, 815 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 02:30:20,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [830 Valid, 881 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 02:30:20,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2021-12-16 02:30:21,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2122. [2021-12-16 02:30:21,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 1910 states have (on average 1.5335078534031414) internal successors, (2929), 1919 states have internal predecessors, (2929), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2021-12-16 02:30:21,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 3262 transitions. [2021-12-16 02:30:21,078 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 3262 transitions. Word has length 123 [2021-12-16 02:30:21,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:30:21,078 INFO L470 AbstractCegarLoop]: Abstraction has 2122 states and 3262 transitions. [2021-12-16 02:30:21,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:30:21,079 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 3262 transitions. [2021-12-16 02:30:21,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 02:30:21,081 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:30:21,081 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:30:21,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 02:30:21,082 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:30:21,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:30:21,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1378233722, now seen corresponding path program 1 times [2021-12-16 02:30:21,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:30:21,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724461318] [2021-12-16 02:30:21,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:30:21,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:30:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:21,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:30:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:21,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:30:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:21,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:30:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:21,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:30:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:21,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:30:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:21,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:30:21,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:30:21,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724461318] [2021-12-16 02:30:21,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724461318] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:30:21,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:30:21,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:30:21,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062452245] [2021-12-16 02:30:21,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:30:21,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:30:21,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:30:21,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:30:21,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:30:21,183 INFO L87 Difference]: Start difference. First operand 2122 states and 3262 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:30:23,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:30:23,080 INFO L93 Difference]: Finished difference Result 7364 states and 11460 transitions. [2021-12-16 02:30:23,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:30:23,080 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 02:30:23,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:30:23,107 INFO L225 Difference]: With dead ends: 7364 [2021-12-16 02:30:23,107 INFO L226 Difference]: Without dead ends: 5258 [2021-12-16 02:30:23,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 02:30:23,115 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 970 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 1879 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 1898 SdHoareTripleChecker+Invalid, 1951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 02:30:23,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 1898 Invalid, 1951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1879 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 02:30:23,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5258 states. [2021-12-16 02:30:23,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5258 to 3996. [2021-12-16 02:30:23,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3996 states, 3600 states have (on average 1.5291666666666666) internal successors, (5505), 3617 states have internal predecessors, (5505), 277 states have call successors, (277), 102 states have call predecessors, (277), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2021-12-16 02:30:23,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3996 states to 3996 states and 6156 transitions. [2021-12-16 02:30:23,396 INFO L78 Accepts]: Start accepts. Automaton has 3996 states and 6156 transitions. Word has length 123 [2021-12-16 02:30:23,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:30:23,396 INFO L470 AbstractCegarLoop]: Abstraction has 3996 states and 6156 transitions. [2021-12-16 02:30:23,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:30:23,396 INFO L276 IsEmpty]: Start isEmpty. Operand 3996 states and 6156 transitions. [2021-12-16 02:30:23,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 02:30:23,400 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:30:23,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:30:23,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 02:30:23,400 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:30:23,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:30:23,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1010330308, now seen corresponding path program 1 times [2021-12-16 02:30:23,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:30:23,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129847148] [2021-12-16 02:30:23,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:30:23,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:30:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:23,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:30:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:23,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:30:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:23,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:30:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:23,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:30:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:23,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:30:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:23,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:30:23,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:30:23,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129847148] [2021-12-16 02:30:23,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129847148] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:30:23,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:30:23,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:30:23,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920083198] [2021-12-16 02:30:23,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:30:23,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:30:23,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:30:23,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:30:23,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:30:23,513 INFO L87 Difference]: Start difference. First operand 3996 states and 6156 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:30:25,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:30:25,818 INFO L93 Difference]: Finished difference Result 15764 states and 24506 transitions. [2021-12-16 02:30:25,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 02:30:25,819 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 02:30:25,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:30:25,904 INFO L225 Difference]: With dead ends: 15764 [2021-12-16 02:30:25,904 INFO L226 Difference]: Without dead ends: 11784 [2021-12-16 02:30:25,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 02:30:25,920 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 1260 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 1864 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 02:30:25,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1282 Valid, 1883 Invalid, 1941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1864 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-16 02:30:25,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11784 states. [2021-12-16 02:30:26,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11784 to 7709. [2021-12-16 02:30:26,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7709 states, 6961 states have (on average 1.5289469903749462) internal successors, (10643), 6994 states have internal predecessors, (10643), 517 states have call successors, (517), 198 states have call predecessors, (517), 230 states have return successors, (792), 548 states have call predecessors, (792), 517 states have call successors, (792) [2021-12-16 02:30:26,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7709 states to 7709 states and 11952 transitions. [2021-12-16 02:30:26,500 INFO L78 Accepts]: Start accepts. Automaton has 7709 states and 11952 transitions. Word has length 123 [2021-12-16 02:30:26,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:30:26,500 INFO L470 AbstractCegarLoop]: Abstraction has 7709 states and 11952 transitions. [2021-12-16 02:30:26,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:30:26,501 INFO L276 IsEmpty]: Start isEmpty. Operand 7709 states and 11952 transitions. [2021-12-16 02:30:26,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 02:30:26,507 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:30:26,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:30:26,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 02:30:26,508 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:30:26,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:30:26,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1683565882, now seen corresponding path program 1 times [2021-12-16 02:30:26,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:30:26,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438806215] [2021-12-16 02:30:26,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:30:26,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:30:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:26,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:30:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:26,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:30:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:26,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:30:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:26,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:30:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:26,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:30:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:26,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:30:26,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:30:26,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438806215] [2021-12-16 02:30:26,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438806215] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:30:26,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:30:26,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:30:26,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288726199] [2021-12-16 02:30:26,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:30:26,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:30:26,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:30:26,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:30:26,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:30:26,614 INFO L87 Difference]: Start difference. First operand 7709 states and 11952 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:30:27,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:30:27,896 INFO L93 Difference]: Finished difference Result 17800 states and 27999 transitions. [2021-12-16 02:30:27,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:30:27,936 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 02:30:27,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:30:27,970 INFO L225 Difference]: With dead ends: 17800 [2021-12-16 02:30:27,971 INFO L226 Difference]: Without dead ends: 10107 [2021-12-16 02:30:27,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:30:27,994 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 816 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 02:30:27,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 867 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 02:30:28,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10107 states. [2021-12-16 02:30:28,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10107 to 7709. [2021-12-16 02:30:28,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7709 states, 6961 states have (on average 1.5242062921993966) internal successors, (10610), 6994 states have internal predecessors, (10610), 517 states have call successors, (517), 198 states have call predecessors, (517), 230 states have return successors, (792), 548 states have call predecessors, (792), 517 states have call successors, (792) [2021-12-16 02:30:28,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7709 states to 7709 states and 11919 transitions. [2021-12-16 02:30:28,565 INFO L78 Accepts]: Start accepts. Automaton has 7709 states and 11919 transitions. Word has length 123 [2021-12-16 02:30:28,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:30:28,566 INFO L470 AbstractCegarLoop]: Abstraction has 7709 states and 11919 transitions. [2021-12-16 02:30:28,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:30:28,566 INFO L276 IsEmpty]: Start isEmpty. Operand 7709 states and 11919 transitions. [2021-12-16 02:30:28,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 02:30:28,572 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:30:28,572 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:30:28,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-16 02:30:28,573 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:30:28,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:30:28,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1554670212, now seen corresponding path program 1 times [2021-12-16 02:30:28,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:30:28,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863063408] [2021-12-16 02:30:28,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:30:28,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:30:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:28,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:30:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:28,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:30:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:28,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:30:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:28,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:30:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:28,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:30:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:28,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:30:28,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:30:28,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863063408] [2021-12-16 02:30:28,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863063408] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:30:28,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:30:28,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:30:28,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970535872] [2021-12-16 02:30:28,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:30:28,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:30:28,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:30:28,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:30:28,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:30:28,690 INFO L87 Difference]: Start difference. First operand 7709 states and 11919 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:30:31,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:30:31,474 INFO L93 Difference]: Finished difference Result 29391 states and 45844 transitions. [2021-12-16 02:30:31,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 02:30:31,475 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 02:30:31,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:30:31,561 INFO L225 Difference]: With dead ends: 29391 [2021-12-16 02:30:31,561 INFO L226 Difference]: Without dead ends: 21698 [2021-12-16 02:30:31,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 02:30:31,594 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 1055 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 1904 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 2005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 02:30:31,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1068 Valid, 1396 Invalid, 2005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1904 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 02:30:31,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21698 states. [2021-12-16 02:30:32,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21698 to 15184. [2021-12-16 02:30:32,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15184 states, 13748 states have (on average 1.5251672970613908) internal successors, (20968), 13813 states have internal predecessors, (20968), 981 states have call successors, (981), 390 states have call predecessors, (981), 454 states have return successors, (1774), 1044 states have call predecessors, (1774), 981 states have call successors, (1774) [2021-12-16 02:30:32,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15184 states to 15184 states and 23723 transitions. [2021-12-16 02:30:32,819 INFO L78 Accepts]: Start accepts. Automaton has 15184 states and 23723 transitions. Word has length 123 [2021-12-16 02:30:32,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:30:32,819 INFO L470 AbstractCegarLoop]: Abstraction has 15184 states and 23723 transitions. [2021-12-16 02:30:32,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:30:32,820 INFO L276 IsEmpty]: Start isEmpty. Operand 15184 states and 23723 transitions. [2021-12-16 02:30:32,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 02:30:32,830 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:30:32,831 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:30:32,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-16 02:30:32,831 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:30:32,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:30:32,832 INFO L85 PathProgramCache]: Analyzing trace with hash -64304702, now seen corresponding path program 1 times [2021-12-16 02:30:32,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:30:32,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144311053] [2021-12-16 02:30:32,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:30:32,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:30:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:32,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:30:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:32,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:30:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:32,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:30:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:32,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:30:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:32,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:30:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:32,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:30:32,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:30:32,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144311053] [2021-12-16 02:30:32,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144311053] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:30:32,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:30:32,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:30:32,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514362995] [2021-12-16 02:30:32,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:30:32,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:30:32,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:30:32,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:30:32,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:30:32,937 INFO L87 Difference]: Start difference. First operand 15184 states and 23723 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:30:36,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:30:36,987 INFO L93 Difference]: Finished difference Result 56992 states and 89790 transitions. [2021-12-16 02:30:36,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 02:30:36,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 02:30:36,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:30:37,154 INFO L225 Difference]: With dead ends: 56992 [2021-12-16 02:30:37,154 INFO L226 Difference]: Without dead ends: 41824 [2021-12-16 02:30:37,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 02:30:37,206 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 1094 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 1816 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 1896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 02:30:37,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1116 Valid, 1861 Invalid, 1896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1816 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-16 02:30:37,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41824 states. [2021-12-16 02:30:39,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41824 to 30097. [2021-12-16 02:30:39,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30097 states, 27317 states have (on average 1.5267415894864005) internal successors, (41706), 27446 states have internal predecessors, (41706), 1877 states have call successors, (1877), 774 states have call predecessors, (1877), 902 states have return successors, (4192), 2004 states have call predecessors, (4192), 1877 states have call successors, (4192) [2021-12-16 02:30:39,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30097 states to 30097 states and 47775 transitions. [2021-12-16 02:30:39,261 INFO L78 Accepts]: Start accepts. Automaton has 30097 states and 47775 transitions. Word has length 123 [2021-12-16 02:30:39,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:30:39,261 INFO L470 AbstractCegarLoop]: Abstraction has 30097 states and 47775 transitions. [2021-12-16 02:30:39,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:30:39,262 INFO L276 IsEmpty]: Start isEmpty. Operand 30097 states and 47775 transitions. [2021-12-16 02:30:39,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 02:30:39,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:30:39,284 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:30:39,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-16 02:30:39,285 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:30:39,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:30:39,287 INFO L85 PathProgramCache]: Analyzing trace with hash -947813692, now seen corresponding path program 1 times [2021-12-16 02:30:39,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:30:39,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378811578] [2021-12-16 02:30:39,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:30:39,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:30:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:39,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:30:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:39,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:30:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:39,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:30:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:39,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:30:39,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:39,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:30:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:39,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:30:39,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:30:39,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378811578] [2021-12-16 02:30:39,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378811578] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:30:39,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:30:39,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:30:39,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998272142] [2021-12-16 02:30:39,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:30:39,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:30:39,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:30:39,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:30:39,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:30:39,394 INFO L87 Difference]: Start difference. First operand 30097 states and 47775 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:30:46,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:30:46,061 INFO L93 Difference]: Finished difference Result 111007 states and 177732 transitions. [2021-12-16 02:30:46,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 02:30:46,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 02:30:46,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:30:46,450 INFO L225 Difference]: With dead ends: 111007 [2021-12-16 02:30:46,450 INFO L226 Difference]: Without dead ends: 80926 [2021-12-16 02:30:46,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 02:30:46,574 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 1054 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 1808 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 1856 SdHoareTripleChecker+Invalid, 1888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-16 02:30:46,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1076 Valid, 1856 Invalid, 1888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1808 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-16 02:30:46,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80926 states. [2021-12-16 02:30:50,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80926 to 59858. [2021-12-16 02:30:50,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59858 states, 54454 states have (on average 1.5287031255738788) internal successors, (83244), 54711 states have internal predecessors, (83244), 3605 states have call successors, (3605), 1542 states have call predecessors, (3605), 1798 states have return successors, (10422), 3860 states have call predecessors, (10422), 3605 states have call successors, (10422) [2021-12-16 02:30:50,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59858 states to 59858 states and 97271 transitions. [2021-12-16 02:30:50,790 INFO L78 Accepts]: Start accepts. Automaton has 59858 states and 97271 transitions. Word has length 123 [2021-12-16 02:30:50,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:30:50,791 INFO L470 AbstractCegarLoop]: Abstraction has 59858 states and 97271 transitions. [2021-12-16 02:30:50,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:30:50,791 INFO L276 IsEmpty]: Start isEmpty. Operand 59858 states and 97271 transitions. [2021-12-16 02:30:50,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 02:30:50,836 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:30:50,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:30:50,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-16 02:30:50,837 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:30:50,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:30:50,837 INFO L85 PathProgramCache]: Analyzing trace with hash -976313982, now seen corresponding path program 1 times [2021-12-16 02:30:50,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:30:50,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695692351] [2021-12-16 02:30:50,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:30:50,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:30:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:50,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:30:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:50,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:30:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:50,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:30:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:50,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:30:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:50,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:30:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:30:50,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:30:50,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:30:50,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695692351] [2021-12-16 02:30:50,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695692351] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:30:50,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:30:50,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:30:50,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384485484] [2021-12-16 02:30:50,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:30:50,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:30:50,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:30:50,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:30:50,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:30:50,950 INFO L87 Difference]: Start difference. First operand 59858 states and 97271 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)