./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec1_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/product-lines/elevator_spec1_product32.cil.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 d29c49d66a80c5cce6b00f5730e0d825d56678e7df63108e14ba577a66cb87d7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 04:26:10,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 04:26:10,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 04:26:10,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 04:26:10,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 04:26:10,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 04:26:10,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 04:26:10,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 04:26:10,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 04:26:10,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 04:26:10,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 04:26:10,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 04:26:10,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 04:26:10,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 04:26:10,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 04:26:10,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 04:26:10,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 04:26:10,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 04:26:10,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 04:26:10,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 04:26:10,929 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 04:26:10,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 04:26:10,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 04:26:10,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 04:26:10,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 04:26:10,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 04:26:10,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 04:26:10,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 04:26:10,941 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 04:26:10,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 04:26:10,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 04:26:10,943 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 04:26:10,944 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 04:26:10,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 04:26:10,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 04:26:10,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 04:26:10,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 04:26:10,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 04:26:10,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 04:26:10,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 04:26:10,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 04:26:10,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 04:26:10,959 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 04:26:10,983 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 04:26:10,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 04:26:10,984 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 04:26:10,984 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 04:26:10,985 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 04:26:10,985 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 04:26:10,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 04:26:10,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 04:26:10,986 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 04:26:10,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 04:26:10,988 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 04:26:10,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 04:26:10,988 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 04:26:10,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 04:26:10,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 04:26:10,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 04:26:10,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 04:26:10,989 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 04:26:10,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 04:26:10,990 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 04:26:10,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 04:26:10,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 04:26:10,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 04:26:10,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 04:26:10,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:26:10,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 04:26:10,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 04:26:10,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 04:26:10,991 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 04:26:10,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 04:26:10,992 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 04:26:10,992 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 04:26:10,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 04:26:10,993 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d29c49d66a80c5cce6b00f5730e0d825d56678e7df63108e14ba577a66cb87d7 [2022-07-21 04:26:11,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 04:26:11,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 04:26:11,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 04:26:11,384 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 04:26:11,385 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 04:26:11,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product32.cil.c [2022-07-21 04:26:11,454 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75d3ea241/fb4b83be53f148259a29aafab27a5331/FLAGd048ffc23 [2022-07-21 04:26:12,106 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 04:26:12,107 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product32.cil.c [2022-07-21 04:26:12,125 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75d3ea241/fb4b83be53f148259a29aafab27a5331/FLAGd048ffc23 [2022-07-21 04:26:12,435 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75d3ea241/fb4b83be53f148259a29aafab27a5331 [2022-07-21 04:26:12,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 04:26:12,440 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 04:26:12,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 04:26:12,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 04:26:12,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 04:26:12,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:26:12" (1/1) ... [2022-07-21 04:26:12,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e56d247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:26:12, skipping insertion in model container [2022-07-21 04:26:12,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:26:12" (1/1) ... [2022-07-21 04:26:12,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 04:26:12,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 04:26:12,741 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/product-lines/elevator_spec1_product32.cil.c[4316,4329] [2022-07-21 04:26:13,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:26:13,128 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 04:26:13,153 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/product-lines/elevator_spec1_product32.cil.c[4316,4329] [2022-07-21 04:26:13,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:26:13,283 INFO L208 MainTranslator]: Completed translation [2022-07-21 04:26:13,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:26:13 WrapperNode [2022-07-21 04:26:13,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 04:26:13,286 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 04:26:13,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 04:26:13,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 04:26:13,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:26:13" (1/1) ... [2022-07-21 04:26:13,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:26:13" (1/1) ... [2022-07-21 04:26:13,402 INFO L137 Inliner]: procedures = 99, calls = 356, calls flagged for inlining = 29, calls inlined = 25, statements flattened = 970 [2022-07-21 04:26:13,402 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 04:26:13,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 04:26:13,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 04:26:13,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 04:26:13,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:26:13" (1/1) ... [2022-07-21 04:26:13,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:26:13" (1/1) ... [2022-07-21 04:26:13,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:26:13" (1/1) ... [2022-07-21 04:26:13,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:26:13" (1/1) ... [2022-07-21 04:26:13,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:26:13" (1/1) ... [2022-07-21 04:26:13,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:26:13" (1/1) ... [2022-07-21 04:26:13,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:26:13" (1/1) ... [2022-07-21 04:26:13,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 04:26:13,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 04:26:13,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 04:26:13,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 04:26:13,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:26:13" (1/1) ... [2022-07-21 04:26:13,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:26:13,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:13,524 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 04:26:13,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 04:26:13,572 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-21 04:26:13,572 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-21 04:26:13,572 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-21 04:26:13,572 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-21 04:26:13,573 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-21 04:26:13,573 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-21 04:26:13,573 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-07-21 04:26:13,573 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-07-21 04:26:13,573 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-21 04:26:13,573 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-21 04:26:13,574 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-21 04:26:13,574 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-21 04:26:13,574 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-21 04:26:13,574 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-21 04:26:13,574 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-21 04:26:13,574 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-21 04:26:13,574 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-21 04:26:13,575 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-21 04:26:13,575 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-21 04:26:13,575 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-21 04:26:13,575 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-21 04:26:13,575 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-21 04:26:13,575 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-07-21 04:26:13,575 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-07-21 04:26:13,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 04:26:13,576 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-07-21 04:26:13,576 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-07-21 04:26:13,576 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-21 04:26:13,576 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-21 04:26:13,576 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-07-21 04:26:13,577 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-07-21 04:26:13,577 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-21 04:26:13,577 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-21 04:26:13,577 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-21 04:26:13,578 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-21 04:26:13,578 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-21 04:26:13,578 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-21 04:26:13,578 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-21 04:26:13,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-21 04:26:13,578 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-21 04:26:13,578 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-21 04:26:13,579 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-21 04:26:13,579 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-21 04:26:13,579 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-21 04:26:13,579 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-21 04:26:13,579 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-21 04:26:13,579 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-21 04:26:13,579 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-21 04:26:13,580 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-21 04:26:13,580 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-21 04:26:13,581 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-21 04:26:13,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 04:26:13,581 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-21 04:26:13,582 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-21 04:26:13,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 04:26:13,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 04:26:13,583 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-21 04:26:13,584 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-21 04:26:13,584 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-07-21 04:26:13,584 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-07-21 04:26:13,727 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 04:26:13,728 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 04:26:14,587 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 04:26:14,600 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 04:26:14,601 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 04:26:14,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:26:14 BoogieIcfgContainer [2022-07-21 04:26:14,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 04:26:14,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 04:26:14,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 04:26:14,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 04:26:14,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:26:12" (1/3) ... [2022-07-21 04:26:14,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e6cc72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:26:14, skipping insertion in model container [2022-07-21 04:26:14,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:26:13" (2/3) ... [2022-07-21 04:26:14,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e6cc72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:26:14, skipping insertion in model container [2022-07-21 04:26:14,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:26:14" (3/3) ... [2022-07-21 04:26:14,611 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product32.cil.c [2022-07-21 04:26:14,624 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 04:26:14,624 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 04:26:14,677 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 04:26:14,683 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1ea69681, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1dcadce6 [2022-07-21 04:26:14,683 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 04:26:14,689 INFO L276 IsEmpty]: Start isEmpty. Operand has 612 states, 474 states have (on average 1.6729957805907174) internal successors, (793), 497 states have internal predecessors, (793), 108 states have call successors, (108), 28 states have call predecessors, (108), 28 states have return successors, (108), 101 states have call predecessors, (108), 108 states have call successors, (108) [2022-07-21 04:26:14,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-21 04:26:14,710 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:14,711 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:14,712 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:14,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:14,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1600471716, now seen corresponding path program 1 times [2022-07-21 04:26:14,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:14,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723267901] [2022-07-21 04:26:14,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:14,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:15,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:15,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:15,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:26:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:15,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 04:26:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:15,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:15,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:26:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:15,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:26:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:15,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:15,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:15,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:15,672 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-21 04:26:15,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:15,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723267901] [2022-07-21 04:26:15,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723267901] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:15,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672771806] [2022-07-21 04:26:15,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:15,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:15,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:15,676 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:26:15,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 04:26:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:16,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 04:26:16,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:16,070 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 04:26:16,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:16,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672771806] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:16,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:16,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2022-07-21 04:26:16,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087762686] [2022-07-21 04:26:16,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:16,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 04:26:16,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:16,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 04:26:16,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:26:16,121 INFO L87 Difference]: Start difference. First operand has 612 states, 474 states have (on average 1.6729957805907174) internal successors, (793), 497 states have internal predecessors, (793), 108 states have call successors, (108), 28 states have call predecessors, (108), 28 states have return successors, (108), 101 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-21 04:26:16,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:16,195 INFO L93 Difference]: Finished difference Result 633 states and 1039 transitions. [2022-07-21 04:26:16,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 04:26:16,200 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 83 [2022-07-21 04:26:16,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:16,221 INFO L225 Difference]: With dead ends: 633 [2022-07-21 04:26:16,222 INFO L226 Difference]: Without dead ends: 604 [2022-07-21 04:26:16,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:26:16,227 INFO L413 NwaCegarLoop]: 1000 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:16,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:26:16,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-07-21 04:26:16,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2022-07-21 04:26:16,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 468 states have (on average 1.670940170940171) internal successors, (782), 489 states have internal predecessors, (782), 108 states have call successors, (108), 28 states have call predecessors, (108), 27 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2022-07-21 04:26:16,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 993 transitions. [2022-07-21 04:26:16,330 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 993 transitions. Word has length 83 [2022-07-21 04:26:16,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:16,332 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 993 transitions. [2022-07-21 04:26:16,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-21 04:26:16,332 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 993 transitions. [2022-07-21 04:26:16,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-21 04:26:16,345 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:16,345 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:16,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 04:26:16,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-21 04:26:16,572 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:16,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:16,573 INFO L85 PathProgramCache]: Analyzing trace with hash -204438056, now seen corresponding path program 1 times [2022-07-21 04:26:16,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:16,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758062931] [2022-07-21 04:26:16,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:16,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:16,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:16,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:16,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:26:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:16,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 04:26:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:16,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:16,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:26:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:17,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:26:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:17,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:17,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:17,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:17,085 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-21 04:26:17,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:17,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758062931] [2022-07-21 04:26:17,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758062931] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:17,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588519073] [2022-07-21 04:26:17,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:17,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:17,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:17,088 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:26:17,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 04:26:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:17,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:26:17,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:17,472 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 04:26:17,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:17,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588519073] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:17,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:17,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-21 04:26:17,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790899511] [2022-07-21 04:26:17,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:17,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:26:17,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:17,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:26:17,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:26:17,476 INFO L87 Difference]: Start difference. First operand 604 states and 993 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 04:26:17,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:17,646 INFO L93 Difference]: Finished difference Result 1199 states and 1978 transitions. [2022-07-21 04:26:17,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 04:26:17,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 85 [2022-07-21 04:26:17,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:17,654 INFO L225 Difference]: With dead ends: 1199 [2022-07-21 04:26:17,654 INFO L226 Difference]: Without dead ends: 604 [2022-07-21 04:26:17,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:26:17,664 INFO L413 NwaCegarLoop]: 979 mSDtfsCounter, 14 mSDsluCounter, 1951 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2930 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:17,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2930 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:26:17,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-07-21 04:26:17,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2022-07-21 04:26:17,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 468 states have (on average 1.6688034188034189) internal successors, (781), 489 states have internal predecessors, (781), 108 states have call successors, (108), 28 states have call predecessors, (108), 27 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2022-07-21 04:26:17,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 992 transitions. [2022-07-21 04:26:17,740 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 992 transitions. Word has length 85 [2022-07-21 04:26:17,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:17,742 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 992 transitions. [2022-07-21 04:26:17,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 04:26:17,743 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 992 transitions. [2022-07-21 04:26:17,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-21 04:26:17,745 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:17,746 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:17,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-21 04:26:17,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-21 04:26:17,972 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:17,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:17,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1863267408, now seen corresponding path program 1 times [2022-07-21 04:26:17,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:17,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614346342] [2022-07-21 04:26:17,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:17,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:18,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:18,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:18,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:18,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:26:18,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:18,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:18,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:18,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 04:26:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:18,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:18,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:18,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:18,409 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-21 04:26:18,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:18,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614346342] [2022-07-21 04:26:18,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614346342] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:18,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484242877] [2022-07-21 04:26:18,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:18,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:18,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:18,412 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:26:18,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 04:26:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:18,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:26:18,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:18,798 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 04:26:18,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:18,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484242877] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:18,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:18,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-21 04:26:18,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80066534] [2022-07-21 04:26:18,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:18,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:26:18,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:18,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:26:18,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:26:18,801 INFO L87 Difference]: Start difference. First operand 604 states and 992 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 04:26:18,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:18,885 INFO L93 Difference]: Finished difference Result 1199 states and 1976 transitions. [2022-07-21 04:26:18,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 04:26:18,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2022-07-21 04:26:18,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:18,892 INFO L225 Difference]: With dead ends: 1199 [2022-07-21 04:26:18,893 INFO L226 Difference]: Without dead ends: 604 [2022-07-21 04:26:18,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:26:18,899 INFO L413 NwaCegarLoop]: 979 mSDtfsCounter, 12 mSDsluCounter, 1951 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2930 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:18,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2930 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:26:18,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-07-21 04:26:18,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2022-07-21 04:26:18,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 468 states have (on average 1.6666666666666667) internal successors, (780), 489 states have internal predecessors, (780), 108 states have call successors, (108), 28 states have call predecessors, (108), 27 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2022-07-21 04:26:18,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 991 transitions. [2022-07-21 04:26:18,937 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 991 transitions. Word has length 87 [2022-07-21 04:26:18,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:18,937 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 991 transitions. [2022-07-21 04:26:18,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 04:26:18,937 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 991 transitions. [2022-07-21 04:26:18,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-21 04:26:18,939 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:18,939 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:18,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 04:26:19,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:19,158 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:19,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:19,158 INFO L85 PathProgramCache]: Analyzing trace with hash 572926040, now seen corresponding path program 1 times [2022-07-21 04:26:19,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:19,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340083458] [2022-07-21 04:26:19,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:19,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:19,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:19,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:19,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:19,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 04:26:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:19,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:19,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:19,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 04:26:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:19,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:19,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:19,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:19,518 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-21 04:26:19,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:19,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340083458] [2022-07-21 04:26:19,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340083458] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:19,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591267312] [2022-07-21 04:26:19,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:19,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:19,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:19,520 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) [2022-07-21 04:26:19,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 04:26:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:19,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:26:19,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:19,885 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 04:26:19,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:19,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591267312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:19,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:19,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-21 04:26:19,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210797721] [2022-07-21 04:26:19,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:19,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:26:19,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:19,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:26:19,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:26:19,888 INFO L87 Difference]: Start difference. First operand 604 states and 991 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 04:26:19,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:19,958 INFO L93 Difference]: Finished difference Result 1206 states and 1983 transitions. [2022-07-21 04:26:19,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:26:19,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2022-07-21 04:26:19,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:19,963 INFO L225 Difference]: With dead ends: 1206 [2022-07-21 04:26:19,963 INFO L226 Difference]: Without dead ends: 613 [2022-07-21 04:26:19,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:26:19,967 INFO L413 NwaCegarLoop]: 979 mSDtfsCounter, 20 mSDsluCounter, 1951 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2930 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:19,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2930 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:26:19,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-07-21 04:26:19,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2022-07-21 04:26:19,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 476 states have (on average 1.6638655462184875) internal successors, (792), 497 states have internal predecessors, (792), 108 states have call successors, (108), 29 states have call predecessors, (108), 28 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2022-07-21 04:26:20,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 1003 transitions. [2022-07-21 04:26:20,003 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 1003 transitions. Word has length 89 [2022-07-21 04:26:20,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:20,003 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 1003 transitions. [2022-07-21 04:26:20,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 04:26:20,004 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 1003 transitions. [2022-07-21 04:26:20,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-21 04:26:20,005 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:20,006 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:20,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 04:26:20,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:20,231 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:20,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:20,232 INFO L85 PathProgramCache]: Analyzing trace with hash 483938580, now seen corresponding path program 1 times [2022-07-21 04:26:20,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:20,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937517950] [2022-07-21 04:26:20,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:20,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:20,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:20,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:20,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 04:26:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:20,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:26:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:20,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:20,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:20,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 04:26:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:20,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:20,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:20,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:20,621 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-21 04:26:20,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:20,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937517950] [2022-07-21 04:26:20,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937517950] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:20,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328312683] [2022-07-21 04:26:20,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:20,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:20,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:20,624 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:26:20,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 04:26:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:20,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:26:20,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:20,938 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 04:26:20,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:20,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328312683] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:20,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:20,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-21 04:26:20,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035000427] [2022-07-21 04:26:20,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:20,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:26:20,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:20,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:26:20,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:26:20,940 INFO L87 Difference]: Start difference. First operand 613 states and 1003 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 04:26:21,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:21,000 INFO L93 Difference]: Finished difference Result 1208 states and 1984 transitions. [2022-07-21 04:26:21,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:26:21,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 90 [2022-07-21 04:26:21,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:21,006 INFO L225 Difference]: With dead ends: 1208 [2022-07-21 04:26:21,006 INFO L226 Difference]: Without dead ends: 613 [2022-07-21 04:26:21,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:26:21,010 INFO L413 NwaCegarLoop]: 979 mSDtfsCounter, 18 mSDsluCounter, 1951 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2930 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:21,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2930 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:26:21,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-07-21 04:26:21,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2022-07-21 04:26:21,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 476 states have (on average 1.661764705882353) internal successors, (791), 497 states have internal predecessors, (791), 108 states have call successors, (108), 29 states have call predecessors, (108), 28 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2022-07-21 04:26:21,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 1002 transitions. [2022-07-21 04:26:21,033 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 1002 transitions. Word has length 90 [2022-07-21 04:26:21,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:21,033 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 1002 transitions. [2022-07-21 04:26:21,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 04:26:21,034 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 1002 transitions. [2022-07-21 04:26:21,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-21 04:26:21,035 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:21,036 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:21,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-21 04:26:21,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:21,251 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:21,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:21,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1193536220, now seen corresponding path program 1 times [2022-07-21 04:26:21,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:21,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567835960] [2022-07-21 04:26:21,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:21,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:21,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:21,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:21,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 04:26:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:21,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 04:26:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:21,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:21,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:21,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 04:26:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:21,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:21,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:21,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:21,631 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-21 04:26:21,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:21,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567835960] [2022-07-21 04:26:21,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567835960] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:21,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637100796] [2022-07-21 04:26:21,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:21,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:21,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:21,636 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:26:21,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 04:26:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:21,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:26:21,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:21,976 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 04:26:21,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:21,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637100796] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:21,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:21,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-21 04:26:21,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241018727] [2022-07-21 04:26:21,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:21,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:26:21,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:21,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:26:21,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:26:21,979 INFO L87 Difference]: Start difference. First operand 613 states and 1002 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 04:26:22,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:22,039 INFO L93 Difference]: Finished difference Result 1208 states and 1983 transitions. [2022-07-21 04:26:22,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:26:22,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 91 [2022-07-21 04:26:22,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:22,044 INFO L225 Difference]: With dead ends: 1208 [2022-07-21 04:26:22,044 INFO L226 Difference]: Without dead ends: 613 [2022-07-21 04:26:22,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:26:22,048 INFO L413 NwaCegarLoop]: 979 mSDtfsCounter, 17 mSDsluCounter, 1951 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2930 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:22,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2930 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:26:22,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-07-21 04:26:22,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2022-07-21 04:26:22,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 476 states have (on average 1.6596638655462186) internal successors, (790), 497 states have internal predecessors, (790), 108 states have call successors, (108), 29 states have call predecessors, (108), 28 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2022-07-21 04:26:22,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 1001 transitions. [2022-07-21 04:26:22,084 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 1001 transitions. Word has length 91 [2022-07-21 04:26:22,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:22,085 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 1001 transitions. [2022-07-21 04:26:22,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 04:26:22,085 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 1001 transitions. [2022-07-21 04:26:22,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-21 04:26:22,087 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:22,087 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:22,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 04:26:22,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:22,312 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:22,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:22,312 INFO L85 PathProgramCache]: Analyzing trace with hash 889468184, now seen corresponding path program 1 times [2022-07-21 04:26:22,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:22,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439302871] [2022-07-21 04:26:22,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:22,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:22,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:22,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:22,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:22,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 04:26:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:22,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:22,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:22,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:26:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:22,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:22,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:22,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:22,674 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-21 04:26:22,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:22,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439302871] [2022-07-21 04:26:22,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439302871] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:22,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577089287] [2022-07-21 04:26:22,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:22,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:22,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:22,680 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:26:22,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 04:26:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:23,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:26:23,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:23,041 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:26:23,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:23,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577089287] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:23,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:23,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-21 04:26:23,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304333770] [2022-07-21 04:26:23,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:23,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:26:23,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:23,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:26:23,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:26:23,044 INFO L87 Difference]: Start difference. First operand 613 states and 1001 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 04:26:23,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:23,176 INFO L93 Difference]: Finished difference Result 1219 states and 2004 transitions. [2022-07-21 04:26:23,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 04:26:23,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 92 [2022-07-21 04:26:23,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:23,181 INFO L225 Difference]: With dead ends: 1219 [2022-07-21 04:26:23,182 INFO L226 Difference]: Without dead ends: 613 [2022-07-21 04:26:23,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:26:23,185 INFO L413 NwaCegarLoop]: 929 mSDtfsCounter, 135 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 2747 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:23,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 2747 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:26:23,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-07-21 04:26:23,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2022-07-21 04:26:23,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 476 states have (on average 1.6491596638655461) internal successors, (785), 497 states have internal predecessors, (785), 108 states have call successors, (108), 29 states have call predecessors, (108), 28 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2022-07-21 04:26:23,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 996 transitions. [2022-07-21 04:26:23,206 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 996 transitions. Word has length 92 [2022-07-21 04:26:23,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:23,206 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 996 transitions. [2022-07-21 04:26:23,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 04:26:23,207 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 996 transitions. [2022-07-21 04:26:23,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-21 04:26:23,208 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:23,208 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:23,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-21 04:26:23,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:23,423 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:23,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:23,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1874173458, now seen corresponding path program 1 times [2022-07-21 04:26:23,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:23,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398044163] [2022-07-21 04:26:23,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:23,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:23,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:23,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:23,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:23,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:26:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:23,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:23,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:23,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:26:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:23,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:23,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:23,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:23,836 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-21 04:26:23,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:23,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398044163] [2022-07-21 04:26:23,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398044163] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:23,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549987486] [2022-07-21 04:26:23,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:23,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:23,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:23,840 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:26:23,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 04:26:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:24,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:26:24,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:24,193 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:26:24,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:24,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549987486] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:24,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:24,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-21 04:26:24,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612731255] [2022-07-21 04:26:24,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:24,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:26:24,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:24,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:26:24,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:26:24,196 INFO L87 Difference]: Start difference. First operand 613 states and 996 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 04:26:24,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:24,305 INFO L93 Difference]: Finished difference Result 1219 states and 1994 transitions. [2022-07-21 04:26:24,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 04:26:24,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 94 [2022-07-21 04:26:24,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:24,310 INFO L225 Difference]: With dead ends: 1219 [2022-07-21 04:26:24,310 INFO L226 Difference]: Without dead ends: 613 [2022-07-21 04:26:24,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:26:24,313 INFO L413 NwaCegarLoop]: 929 mSDtfsCounter, 129 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2747 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:24,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 2747 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:26:24,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-07-21 04:26:24,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2022-07-21 04:26:24,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 476 states have (on average 1.638655462184874) internal successors, (780), 497 states have internal predecessors, (780), 108 states have call successors, (108), 29 states have call predecessors, (108), 28 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2022-07-21 04:26:24,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 991 transitions. [2022-07-21 04:26:24,330 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 991 transitions. Word has length 94 [2022-07-21 04:26:24,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:24,330 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 991 transitions. [2022-07-21 04:26:24,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 04:26:24,331 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 991 transitions. [2022-07-21 04:26:24,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-21 04:26:24,332 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:24,332 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:24,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 04:26:24,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-21 04:26:24,560 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:24,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:24,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1789321992, now seen corresponding path program 1 times [2022-07-21 04:26:24,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:24,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079991065] [2022-07-21 04:26:24,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:24,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:24,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:24,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:24,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:24,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:26:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:24,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:24,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:24,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:26:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:24,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:24,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:24,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:24,936 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-21 04:26:24,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:24,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079991065] [2022-07-21 04:26:24,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079991065] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:24,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529266258] [2022-07-21 04:26:24,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:24,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:24,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:24,938 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:26:24,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 04:26:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:25,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:26:25,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:25,289 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:26:25,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:25,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529266258] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:25,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:25,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-21 04:26:25,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750425903] [2022-07-21 04:26:25,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:25,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:26:25,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:25,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:26:25,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:26:25,292 INFO L87 Difference]: Start difference. First operand 613 states and 991 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 04:26:25,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:25,445 INFO L93 Difference]: Finished difference Result 1255 states and 2043 transitions. [2022-07-21 04:26:25,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:26:25,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 96 [2022-07-21 04:26:25,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:25,451 INFO L225 Difference]: With dead ends: 1255 [2022-07-21 04:26:25,451 INFO L226 Difference]: Without dead ends: 664 [2022-07-21 04:26:25,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:26:25,456 INFO L413 NwaCegarLoop]: 939 mSDtfsCounter, 179 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 2757 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:25,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 2757 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:26:25,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-07-21 04:26:25,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 664. [2022-07-21 04:26:25,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 526 states have (on average 1.644486692015209) internal successors, (865), 547 states have internal predecessors, (865), 108 states have call successors, (108), 30 states have call predecessors, (108), 29 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2022-07-21 04:26:25,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1076 transitions. [2022-07-21 04:26:25,476 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1076 transitions. Word has length 96 [2022-07-21 04:26:25,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:25,477 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 1076 transitions. [2022-07-21 04:26:25,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 04:26:25,477 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1076 transitions. [2022-07-21 04:26:25,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-21 04:26:25,478 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:25,478 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:25,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 04:26:25,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:25,703 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:25,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:25,704 INFO L85 PathProgramCache]: Analyzing trace with hash -2130844292, now seen corresponding path program 1 times [2022-07-21 04:26:25,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:25,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353658240] [2022-07-21 04:26:25,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:25,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:25,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:25,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:25,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:25,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:26:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:25,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:25,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:26,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:26:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:26,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:26,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:26,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:26,120 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-21 04:26:26,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:26,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353658240] [2022-07-21 04:26:26,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353658240] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:26,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665142291] [2022-07-21 04:26:26,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:26,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:26,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:26,123 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:26:26,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 04:26:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:26,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 1742 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:26:26,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:26,472 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:26:26,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:26,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665142291] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:26,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:26,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-21 04:26:26,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672455004] [2022-07-21 04:26:26,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:26,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:26:26,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:26,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:26:26,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:26:26,475 INFO L87 Difference]: Start difference. First operand 664 states and 1076 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 04:26:26,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:26,621 INFO L93 Difference]: Finished difference Result 1270 states and 2067 transitions. [2022-07-21 04:26:26,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:26:26,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 97 [2022-07-21 04:26:26,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:26,627 INFO L225 Difference]: With dead ends: 1270 [2022-07-21 04:26:26,627 INFO L226 Difference]: Without dead ends: 664 [2022-07-21 04:26:26,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:26:26,630 INFO L413 NwaCegarLoop]: 939 mSDtfsCounter, 173 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2757 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:26,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 2757 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:26:26,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-07-21 04:26:26,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 664. [2022-07-21 04:26:26,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 526 states have (on average 1.6349809885931559) internal successors, (860), 547 states have internal predecessors, (860), 108 states have call successors, (108), 30 states have call predecessors, (108), 29 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2022-07-21 04:26:26,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1071 transitions. [2022-07-21 04:26:26,654 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1071 transitions. Word has length 97 [2022-07-21 04:26:26,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:26,655 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 1071 transitions. [2022-07-21 04:26:26,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 04:26:26,655 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1071 transitions. [2022-07-21 04:26:26,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-21 04:26:26,657 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:26,657 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:26,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 04:26:26,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 04:26:26,884 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:26,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:26,884 INFO L85 PathProgramCache]: Analyzing trace with hash 689905211, now seen corresponding path program 1 times [2022-07-21 04:26:26,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:26,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650213687] [2022-07-21 04:26:26,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:26,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:27,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:27,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:27,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:27,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:26:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:27,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:27,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:27,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:26:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:27,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:27,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:27,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:27,268 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-21 04:26:27,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:27,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650213687] [2022-07-21 04:26:27,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650213687] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:27,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386281361] [2022-07-21 04:26:27,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:27,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:27,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:27,270 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:26:27,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 04:26:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:27,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 04:26:27,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:27,663 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:26:27,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:27,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386281361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:27,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:27,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2022-07-21 04:26:27,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017985035] [2022-07-21 04:26:27,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:27,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:26:27,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:27,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:26:27,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:26:27,666 INFO L87 Difference]: Start difference. First operand 664 states and 1071 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 04:26:27,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:27,805 INFO L93 Difference]: Finished difference Result 1293 states and 2097 transitions. [2022-07-21 04:26:27,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:26:27,806 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2022-07-21 04:26:27,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:27,810 INFO L225 Difference]: With dead ends: 1293 [2022-07-21 04:26:27,810 INFO L226 Difference]: Without dead ends: 702 [2022-07-21 04:26:27,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:26:27,813 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 177 mSDsluCounter, 5653 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6613 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:27,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 6613 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:26:27,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-07-21 04:26:27,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 683. [2022-07-21 04:26:27,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 542 states have (on average 1.6346863468634687) internal successors, (886), 565 states have internal predecessors, (886), 109 states have call successors, (109), 30 states have call predecessors, (109), 31 states have return successors, (106), 101 states have call predecessors, (106), 104 states have call successors, (106) [2022-07-21 04:26:27,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1101 transitions. [2022-07-21 04:26:27,836 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1101 transitions. Word has length 97 [2022-07-21 04:26:27,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:27,836 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 1101 transitions. [2022-07-21 04:26:27,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 04:26:27,837 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1101 transitions. [2022-07-21 04:26:27,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-21 04:26:27,838 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:27,838 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:27,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-21 04:26:28,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-21 04:26:28,063 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:28,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:28,064 INFO L85 PathProgramCache]: Analyzing trace with hash 118653978, now seen corresponding path program 1 times [2022-07-21 04:26:28,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:28,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036680298] [2022-07-21 04:26:28,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:28,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:28,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:28,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:28,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:28,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:26:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:28,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:28,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:28,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:26:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:28,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:28,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:28,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:28,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:28,419 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 04:26:28,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:28,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036680298] [2022-07-21 04:26:28,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036680298] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:28,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284306685] [2022-07-21 04:26:28,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:28,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:28,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:28,421 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:26:28,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 04:26:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:28,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 04:26:28,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:28,796 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 04:26:28,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:28,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284306685] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:28,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:28,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-07-21 04:26:28,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448647787] [2022-07-21 04:26:28,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:28,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:26:28,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:28,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:26:28,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:26:28,799 INFO L87 Difference]: Start difference. First operand 683 states and 1101 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 04:26:28,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:28,899 INFO L93 Difference]: Finished difference Result 1231 states and 1997 transitions. [2022-07-21 04:26:28,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:26:28,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2022-07-21 04:26:28,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:28,905 INFO L225 Difference]: With dead ends: 1231 [2022-07-21 04:26:28,905 INFO L226 Difference]: Without dead ends: 707 [2022-07-21 04:26:28,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:26:28,909 INFO L413 NwaCegarLoop]: 972 mSDtfsCounter, 134 mSDsluCounter, 4754 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5726 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:28,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5726 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:26:28,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2022-07-21 04:26:28,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 702. [2022-07-21 04:26:28,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 558 states have (on average 1.6344086021505377) internal successors, (912), 583 states have internal predecessors, (912), 110 states have call successors, (110), 30 states have call predecessors, (110), 33 states have return successors, (109), 102 states have call predecessors, (109), 105 states have call successors, (109) [2022-07-21 04:26:28,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1131 transitions. [2022-07-21 04:26:28,933 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1131 transitions. Word has length 97 [2022-07-21 04:26:28,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:28,934 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 1131 transitions. [2022-07-21 04:26:28,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 04:26:28,934 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1131 transitions. [2022-07-21 04:26:28,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-21 04:26:28,936 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:28,936 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:28,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-21 04:26:29,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-21 04:26:29,152 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:29,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:29,153 INFO L85 PathProgramCache]: Analyzing trace with hash -432454433, now seen corresponding path program 1 times [2022-07-21 04:26:29,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:29,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639007956] [2022-07-21 04:26:29,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:29,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:29,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:29,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:29,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:29,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:26:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:29,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:29,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:29,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:29,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 04:26:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:29,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:29,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:29,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:29,519 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 04:26:29,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:29,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639007956] [2022-07-21 04:26:29,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639007956] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:29,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879251383] [2022-07-21 04:26:29,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:29,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:29,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:29,521 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:26:29,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-21 04:26:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:29,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 04:26:29,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:29,899 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 04:26:29,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:29,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879251383] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:29,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:29,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-07-21 04:26:29,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874370525] [2022-07-21 04:26:29,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:29,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:26:29,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:29,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:26:29,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:26:29,902 INFO L87 Difference]: Start difference. First operand 702 states and 1131 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 04:26:29,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:29,994 INFO L93 Difference]: Finished difference Result 1261 states and 2048 transitions. [2022-07-21 04:26:29,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:26:29,995 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2022-07-21 04:26:29,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:29,999 INFO L225 Difference]: With dead ends: 1261 [2022-07-21 04:26:30,000 INFO L226 Difference]: Without dead ends: 737 [2022-07-21 04:26:30,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:26:30,003 INFO L413 NwaCegarLoop]: 972 mSDtfsCounter, 143 mSDsluCounter, 4744 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5716 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:30,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5716 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:26:30,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2022-07-21 04:26:30,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 702. [2022-07-21 04:26:30,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 558 states have (on average 1.6344086021505377) internal successors, (912), 583 states have internal predecessors, (912), 110 states have call successors, (110), 30 states have call predecessors, (110), 33 states have return successors, (109), 102 states have call predecessors, (109), 105 states have call successors, (109) [2022-07-21 04:26:30,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1131 transitions. [2022-07-21 04:26:30,027 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1131 transitions. Word has length 98 [2022-07-21 04:26:30,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:30,028 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 1131 transitions. [2022-07-21 04:26:30,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 04:26:30,028 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1131 transitions. [2022-07-21 04:26:30,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-21 04:26:30,030 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:30,030 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:30,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-21 04:26:30,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-21 04:26:30,243 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:30,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:30,244 INFO L85 PathProgramCache]: Analyzing trace with hash -610238113, now seen corresponding path program 1 times [2022-07-21 04:26:30,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:30,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505541012] [2022-07-21 04:26:30,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:30,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:30,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:30,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:30,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:30,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:30,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:26:30,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:30,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:30,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:30,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 04:26:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:30,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:30,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:30,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:30,583 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 04:26:30,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:30,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505541012] [2022-07-21 04:26:30,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505541012] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:30,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167908726] [2022-07-21 04:26:30,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:30,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:30,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:30,593 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:26:30,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-21 04:26:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:30,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 04:26:30,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:31,002 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 04:26:31,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:31,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167908726] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:31,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:31,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-07-21 04:26:31,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853913927] [2022-07-21 04:26:31,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:31,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:26:31,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:31,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:26:31,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:26:31,005 INFO L87 Difference]: Start difference. First operand 702 states and 1131 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 04:26:31,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:31,141 INFO L93 Difference]: Finished difference Result 1246 states and 2022 transitions. [2022-07-21 04:26:31,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:26:31,142 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2022-07-21 04:26:31,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:31,146 INFO L225 Difference]: With dead ends: 1246 [2022-07-21 04:26:31,147 INFO L226 Difference]: Without dead ends: 722 [2022-07-21 04:26:31,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-07-21 04:26:31,150 INFO L413 NwaCegarLoop]: 962 mSDtfsCounter, 177 mSDsluCounter, 5659 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6621 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:31,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 6621 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:26:31,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-07-21 04:26:31,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 702. [2022-07-21 04:26:31,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 558 states have (on average 1.6344086021505377) internal successors, (912), 583 states have internal predecessors, (912), 110 states have call successors, (110), 30 states have call predecessors, (110), 33 states have return successors, (109), 102 states have call predecessors, (109), 105 states have call successors, (109) [2022-07-21 04:26:31,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1131 transitions. [2022-07-21 04:26:31,172 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1131 transitions. Word has length 98 [2022-07-21 04:26:31,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:31,173 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 1131 transitions. [2022-07-21 04:26:31,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 04:26:31,173 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1131 transitions. [2022-07-21 04:26:31,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-21 04:26:31,175 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:31,175 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:31,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-21 04:26:31,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:31,395 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:31,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:31,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1781134100, now seen corresponding path program 1 times [2022-07-21 04:26:31,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:31,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19779514] [2022-07-21 04:26:31,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:31,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:31,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:31,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:31,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:31,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:26:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:31,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:31,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 04:26:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:31,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 04:26:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:31,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:31,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:31,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:31,724 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-21 04:26:31,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:31,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19779514] [2022-07-21 04:26:31,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19779514] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:31,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720627899] [2022-07-21 04:26:31,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:31,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:31,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:31,726 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:26:31,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-21 04:26:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:32,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:26:32,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:32,068 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 04:26:32,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:32,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720627899] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:32,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:32,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-07-21 04:26:32,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257250897] [2022-07-21 04:26:32,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:32,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:26:32,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:32,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:26:32,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:26:32,088 INFO L87 Difference]: Start difference. First operand 702 states and 1131 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 04:26:32,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:32,138 INFO L93 Difference]: Finished difference Result 1298 states and 2107 transitions. [2022-07-21 04:26:32,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:26:32,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 98 [2022-07-21 04:26:32,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:32,143 INFO L225 Difference]: With dead ends: 1298 [2022-07-21 04:26:32,143 INFO L226 Difference]: Without dead ends: 702 [2022-07-21 04:26:32,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:26:32,146 INFO L413 NwaCegarLoop]: 968 mSDtfsCounter, 23 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2899 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:32,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2899 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:26:32,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-07-21 04:26:32,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 702. [2022-07-21 04:26:32,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 558 states have (on average 1.6272401433691757) internal successors, (908), 583 states have internal predecessors, (908), 110 states have call successors, (110), 30 states have call predecessors, (110), 33 states have return successors, (109), 102 states have call predecessors, (109), 105 states have call successors, (109) [2022-07-21 04:26:32,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1127 transitions. [2022-07-21 04:26:32,166 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1127 transitions. Word has length 98 [2022-07-21 04:26:32,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:32,166 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 1127 transitions. [2022-07-21 04:26:32,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 04:26:32,167 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1127 transitions. [2022-07-21 04:26:32,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-21 04:26:32,169 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:32,169 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:32,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-21 04:26:32,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-21 04:26:32,379 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:32,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:32,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1495839790, now seen corresponding path program 1 times [2022-07-21 04:26:32,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:32,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679007711] [2022-07-21 04:26:32,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:32,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:32,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:32,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:32,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:32,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:26:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:32,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:32,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:32,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 04:26:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:32,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:32,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:32,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:32,775 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:26:32,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:32,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679007711] [2022-07-21 04:26:32,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679007711] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:32,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186455725] [2022-07-21 04:26:32,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:32,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:32,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:32,780 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:26:32,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-21 04:26:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:33,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 04:26:33,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:33,197 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 04:26:33,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:33,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186455725] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:33,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:33,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2022-07-21 04:26:33,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092872254] [2022-07-21 04:26:33,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:33,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:26:33,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:33,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:26:33,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-07-21 04:26:33,199 INFO L87 Difference]: Start difference. First operand 702 states and 1127 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 04:26:33,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:33,347 INFO L93 Difference]: Finished difference Result 1246 states and 2019 transitions. [2022-07-21 04:26:33,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:26:33,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2022-07-21 04:26:33,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:33,353 INFO L225 Difference]: With dead ends: 1246 [2022-07-21 04:26:33,353 INFO L226 Difference]: Without dead ends: 722 [2022-07-21 04:26:33,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2022-07-21 04:26:33,357 INFO L413 NwaCegarLoop]: 956 mSDtfsCounter, 185 mSDsluCounter, 5622 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 6578 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:33,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 6578 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:26:33,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-07-21 04:26:33,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 702. [2022-07-21 04:26:33,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 558 states have (on average 1.6272401433691757) internal successors, (908), 583 states have internal predecessors, (908), 110 states have call successors, (110), 30 states have call predecessors, (110), 33 states have return successors, (109), 102 states have call predecessors, (109), 105 states have call successors, (109) [2022-07-21 04:26:33,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1127 transitions. [2022-07-21 04:26:33,383 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1127 transitions. Word has length 99 [2022-07-21 04:26:33,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:33,384 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 1127 transitions. [2022-07-21 04:26:33,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 04:26:33,384 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1127 transitions. [2022-07-21 04:26:33,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-21 04:26:33,386 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:33,386 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:33,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-21 04:26:33,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-21 04:26:33,602 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:33,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:33,603 INFO L85 PathProgramCache]: Analyzing trace with hash 26912452, now seen corresponding path program 1 times [2022-07-21 04:26:33,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:33,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490584161] [2022-07-21 04:26:33,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:33,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:33,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:33,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:33,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:33,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:26:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:33,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:33,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:34,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:26:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:34,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:34,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:34,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:34,024 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:26:34,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:34,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490584161] [2022-07-21 04:26:34,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490584161] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:34,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760030796] [2022-07-21 04:26:34,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:34,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:34,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:34,028 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:26:34,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-21 04:26:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:34,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 04:26:34,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:34,371 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 04:26:34,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:34,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760030796] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:34,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:34,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-07-21 04:26:34,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298357935] [2022-07-21 04:26:34,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:34,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:26:34,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:34,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:26:34,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:26:34,375 INFO L87 Difference]: Start difference. First operand 702 states and 1127 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 04:26:34,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:34,432 INFO L93 Difference]: Finished difference Result 1354 states and 2189 transitions. [2022-07-21 04:26:34,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 04:26:34,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 100 [2022-07-21 04:26:34,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:34,437 INFO L225 Difference]: With dead ends: 1354 [2022-07-21 04:26:34,438 INFO L226 Difference]: Without dead ends: 738 [2022-07-21 04:26:34,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:26:34,441 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 38 mSDsluCounter, 1915 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2875 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:34,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 2875 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:26:34,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2022-07-21 04:26:34,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 726. [2022-07-21 04:26:34,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 582 states have (on average 1.6082474226804124) internal successors, (936), 607 states have internal predecessors, (936), 110 states have call successors, (110), 30 states have call predecessors, (110), 33 states have return successors, (109), 102 states have call predecessors, (109), 105 states have call successors, (109) [2022-07-21 04:26:34,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1155 transitions. [2022-07-21 04:26:34,466 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1155 transitions. Word has length 100 [2022-07-21 04:26:34,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:34,466 INFO L495 AbstractCegarLoop]: Abstraction has 726 states and 1155 transitions. [2022-07-21 04:26:34,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 04:26:34,467 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1155 transitions. [2022-07-21 04:26:34,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-21 04:26:34,468 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:34,469 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:34,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-21 04:26:34,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-21 04:26:34,684 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:34,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:34,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1540424519, now seen corresponding path program 1 times [2022-07-21 04:26:34,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:34,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066817018] [2022-07-21 04:26:34,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:34,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:34,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:34,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:34,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:34,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:26:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:34,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:34,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:35,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:26:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:35,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:35,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:35,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:26:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:35,052 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 04:26:35,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:35,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066817018] [2022-07-21 04:26:35,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066817018] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:35,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585781881] [2022-07-21 04:26:35,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:35,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:35,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:35,054 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:26:35,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-21 04:26:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:35,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 04:26:35,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:35,685 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 04:26:35,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:35,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585781881] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:35,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:35,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2022-07-21 04:26:35,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638910904] [2022-07-21 04:26:35,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:35,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:26:35,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:35,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:26:35,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:26:35,687 INFO L87 Difference]: Start difference. First operand 726 states and 1155 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 04:26:38,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:38,498 INFO L93 Difference]: Finished difference Result 2370 states and 3887 transitions. [2022-07-21 04:26:38,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 04:26:38,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 100 [2022-07-21 04:26:38,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:38,509 INFO L225 Difference]: With dead ends: 2370 [2022-07-21 04:26:38,509 INFO L226 Difference]: Without dead ends: 1851 [2022-07-21 04:26:38,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:26:38,515 INFO L413 NwaCegarLoop]: 1656 mSDtfsCounter, 3508 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 2643 mSolverCounterSat, 754 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3703 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 3397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 754 IncrementalHoareTripleChecker+Valid, 2643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:38,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3703 Valid, 2634 Invalid, 3397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [754 Valid, 2643 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-21 04:26:38,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2022-07-21 04:26:38,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1664. [2022-07-21 04:26:38,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1664 states, 1315 states have (on average 1.6433460076045627) internal successors, (2161), 1358 states have internal predecessors, (2161), 277 states have call successors, (277), 66 states have call predecessors, (277), 71 states have return successors, (286), 254 states have call predecessors, (286), 272 states have call successors, (286) [2022-07-21 04:26:38,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2724 transitions. [2022-07-21 04:26:38,589 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2724 transitions. Word has length 100 [2022-07-21 04:26:38,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:38,589 INFO L495 AbstractCegarLoop]: Abstraction has 1664 states and 2724 transitions. [2022-07-21 04:26:38,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 04:26:38,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2724 transitions. [2022-07-21 04:26:38,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-21 04:26:38,595 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:38,595 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:38,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-21 04:26:38,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-21 04:26:38,815 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:38,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:38,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1622995937, now seen corresponding path program 1 times [2022-07-21 04:26:38,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:38,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017437382] [2022-07-21 04:26:38,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:38,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:38,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:38,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:38,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:38,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:26:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:38,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:38,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:39,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:26:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:39,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:39,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:39,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:39,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:39,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:39,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:26:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:39,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:26:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:39,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:39,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:39,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:26:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:39,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:26:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:39,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 04:26:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:39,371 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-21 04:26:39,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:39,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017437382] [2022-07-21 04:26:39,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017437382] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:39,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109195006] [2022-07-21 04:26:39,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:39,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:39,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:39,374 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:26:39,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-21 04:26:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:39,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 2107 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 04:26:39,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:39,869 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:26:39,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:39,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109195006] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:39,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:39,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2022-07-21 04:26:39,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150986918] [2022-07-21 04:26:39,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:39,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:26:39,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:39,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:26:39,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:26:39,872 INFO L87 Difference]: Start difference. First operand 1664 states and 2724 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 04:26:40,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:40,358 INFO L93 Difference]: Finished difference Result 3145 states and 5263 transitions. [2022-07-21 04:26:40,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:26:40,359 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 155 [2022-07-21 04:26:40,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:40,369 INFO L225 Difference]: With dead ends: 3145 [2022-07-21 04:26:40,369 INFO L226 Difference]: Without dead ends: 1688 [2022-07-21 04:26:40,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:26:40,378 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 904 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 2454 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:40,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 2454 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 04:26:40,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2022-07-21 04:26:40,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1688. [2022-07-21 04:26:40,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1688 states, 1336 states have (on average 1.6444610778443114) internal successors, (2197), 1379 states have internal predecessors, (2197), 277 states have call successors, (277), 69 states have call predecessors, (277), 74 states have return successors, (289), 254 states have call predecessors, (289), 272 states have call successors, (289) [2022-07-21 04:26:40,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2763 transitions. [2022-07-21 04:26:40,473 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2763 transitions. Word has length 155 [2022-07-21 04:26:40,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:40,473 INFO L495 AbstractCegarLoop]: Abstraction has 1688 states and 2763 transitions. [2022-07-21 04:26:40,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 04:26:40,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2763 transitions. [2022-07-21 04:26:40,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 04:26:40,478 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:40,479 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:40,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-21 04:26:40,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:40,705 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:40,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:40,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1575465798, now seen corresponding path program 1 times [2022-07-21 04:26:40,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:40,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169157477] [2022-07-21 04:26:40,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:40,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:40,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:40,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:40,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:40,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:40,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:26:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:40,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:40,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:41,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:26:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:41,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:41,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:41,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:26:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:41,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:41,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:41,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:26:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:41,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 04:26:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:41,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:41,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:41,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:26:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:41,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 04:26:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:41,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:26:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 04:26:41,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:41,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169157477] [2022-07-21 04:26:41,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169157477] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:41,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349517950] [2022-07-21 04:26:41,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:41,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:41,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:41,285 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:26:41,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-21 04:26:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:41,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 2109 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 04:26:41,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:41,839 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-21 04:26:41,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:41,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349517950] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:41,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:41,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-07-21 04:26:41,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096728978] [2022-07-21 04:26:41,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:41,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:26:41,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:41,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:26:41,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-07-21 04:26:41,842 INFO L87 Difference]: Start difference. First operand 1688 states and 2763 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-21 04:26:44,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:44,635 INFO L93 Difference]: Finished difference Result 4541 states and 7479 transitions. [2022-07-21 04:26:44,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 04:26:44,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 156 [2022-07-21 04:26:44,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:44,655 INFO L225 Difference]: With dead ends: 4541 [2022-07-21 04:26:44,655 INFO L226 Difference]: Without dead ends: 2873 [2022-07-21 04:26:44,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2022-07-21 04:26:44,665 INFO L413 NwaCegarLoop]: 1218 mSDtfsCounter, 1886 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 4996 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1975 SdHoareTripleChecker+Valid, 2787 SdHoareTripleChecker+Invalid, 5399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 4996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:44,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1975 Valid, 2787 Invalid, 5399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 4996 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-21 04:26:44,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2022-07-21 04:26:44,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2653. [2022-07-21 04:26:44,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2653 states, 2073 states have (on average 1.6246985045827302) internal successors, (3368), 2125 states have internal predecessors, (3368), 455 states have call successors, (455), 105 states have call predecessors, (455), 124 states have return successors, (503), 433 states have call predecessors, (503), 450 states have call successors, (503) [2022-07-21 04:26:44,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 4326 transitions. [2022-07-21 04:26:44,777 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 4326 transitions. Word has length 156 [2022-07-21 04:26:44,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:44,778 INFO L495 AbstractCegarLoop]: Abstraction has 2653 states and 4326 transitions. [2022-07-21 04:26:44,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-21 04:26:44,785 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 4326 transitions. [2022-07-21 04:26:44,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-21 04:26:44,791 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:44,791 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:44,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-21 04:26:45,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:45,003 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:45,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:45,004 INFO L85 PathProgramCache]: Analyzing trace with hash 2069185043, now seen corresponding path program 1 times [2022-07-21 04:26:45,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:45,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272378738] [2022-07-21 04:26:45,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:45,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:45,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:45,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:45,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:45,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:26:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:45,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:45,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:45,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:26:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:45,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:45,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:45,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:45,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:45,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:45,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:26:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:45,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 04:26:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:45,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:45,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:45,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:26:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:45,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 04:26:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:45,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 04:26:45,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:45,587 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 04:26:45,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:45,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272378738] [2022-07-21 04:26:45,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272378738] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:45,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338699002] [2022-07-21 04:26:45,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:45,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:45,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:45,592 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:26:45,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-21 04:26:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:45,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 2106 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 04:26:45,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:46,030 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:26:46,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:46,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338699002] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:46,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:46,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2022-07-21 04:26:46,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459204889] [2022-07-21 04:26:46,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:46,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:26:46,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:46,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:26:46,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:26:46,033 INFO L87 Difference]: Start difference. First operand 2653 states and 4326 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 04:26:46,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:46,482 INFO L93 Difference]: Finished difference Result 5147 states and 8571 transitions. [2022-07-21 04:26:46,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:26:46,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 157 [2022-07-21 04:26:46,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:46,498 INFO L225 Difference]: With dead ends: 5147 [2022-07-21 04:26:46,498 INFO L226 Difference]: Without dead ends: 2701 [2022-07-21 04:26:46,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:26:46,512 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 917 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 2454 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:46,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 2454 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 04:26:46,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2022-07-21 04:26:46,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2701. [2022-07-21 04:26:46,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2115 states have (on average 1.6264775413711583) internal successors, (3440), 2167 states have internal predecessors, (3440), 455 states have call successors, (455), 111 states have call predecessors, (455), 130 states have return successors, (508), 433 states have call predecessors, (508), 450 states have call successors, (508) [2022-07-21 04:26:46,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 4403 transitions. [2022-07-21 04:26:46,625 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 4403 transitions. Word has length 157 [2022-07-21 04:26:46,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:46,626 INFO L495 AbstractCegarLoop]: Abstraction has 2701 states and 4403 transitions. [2022-07-21 04:26:46,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 04:26:46,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 4403 transitions. [2022-07-21 04:26:46,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-21 04:26:46,632 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:46,632 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:46,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-21 04:26:46,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:46,847 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:46,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:46,848 INFO L85 PathProgramCache]: Analyzing trace with hash 770939745, now seen corresponding path program 1 times [2022-07-21 04:26:46,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:46,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511712655] [2022-07-21 04:26:46,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:46,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:46,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:46,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:46,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:47,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:26:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:47,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:47,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:47,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:26:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:47,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:47,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:47,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:47,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:47,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:47,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:26:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:47,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 04:26:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:47,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:47,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:47,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:26:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:47,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 04:26:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:47,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 04:26:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:47,377 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-21 04:26:47,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:47,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511712655] [2022-07-21 04:26:47,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511712655] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:47,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886290109] [2022-07-21 04:26:47,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:47,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:47,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:47,380 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:26:47,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-21 04:26:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:47,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 2108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 04:26:47,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:47,803 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:26:47,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:47,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886290109] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:47,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:47,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2022-07-21 04:26:47,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288639524] [2022-07-21 04:26:47,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:47,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:26:47,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:47,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:26:47,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:26:47,807 INFO L87 Difference]: Start difference. First operand 2701 states and 4403 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 04:26:48,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:48,236 INFO L93 Difference]: Finished difference Result 5243 states and 8709 transitions. [2022-07-21 04:26:48,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:26:48,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 159 [2022-07-21 04:26:48,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:48,254 INFO L225 Difference]: With dead ends: 5243 [2022-07-21 04:26:48,254 INFO L226 Difference]: Without dead ends: 2749 [2022-07-21 04:26:48,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:26:48,265 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 915 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 2454 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:48,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 2454 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 04:26:48,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2022-07-21 04:26:48,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 2749. [2022-07-21 04:26:48,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2749 states, 2157 states have (on average 1.6281872971719982) internal successors, (3512), 2209 states have internal predecessors, (3512), 455 states have call successors, (455), 117 states have call predecessors, (455), 136 states have return successors, (513), 433 states have call predecessors, (513), 450 states have call successors, (513) [2022-07-21 04:26:48,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 4480 transitions. [2022-07-21 04:26:48,406 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 4480 transitions. Word has length 159 [2022-07-21 04:26:48,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:48,406 INFO L495 AbstractCegarLoop]: Abstraction has 2749 states and 4480 transitions. [2022-07-21 04:26:48,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 04:26:48,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 4480 transitions. [2022-07-21 04:26:48,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-21 04:26:48,411 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:48,411 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:48,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-21 04:26:48,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:48,627 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:48,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:48,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1119296437, now seen corresponding path program 1 times [2022-07-21 04:26:48,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:48,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322957865] [2022-07-21 04:26:48,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:48,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:48,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:48,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:48,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:48,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:26:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:48,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:48,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:48,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:26:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:48,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:48,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:49,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:49,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:49,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:49,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 04:26:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:49,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:26:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:49,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:49,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:49,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 04:26:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:49,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:26:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:49,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 04:26:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:49,163 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:26:49,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:49,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322957865] [2022-07-21 04:26:49,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322957865] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:49,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275910710] [2022-07-21 04:26:49,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:49,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:49,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:49,168 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:26:49,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-21 04:26:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:49,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 2110 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 04:26:49,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:49,590 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:26:49,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:49,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275910710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:49,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:49,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2022-07-21 04:26:49,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299322405] [2022-07-21 04:26:49,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:49,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:26:49,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:49,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:26:49,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:26:49,592 INFO L87 Difference]: Start difference. First operand 2749 states and 4480 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 04:26:50,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:50,012 INFO L93 Difference]: Finished difference Result 5339 states and 8847 transitions. [2022-07-21 04:26:50,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:26:50,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 161 [2022-07-21 04:26:50,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:50,027 INFO L225 Difference]: With dead ends: 5339 [2022-07-21 04:26:50,028 INFO L226 Difference]: Without dead ends: 2797 [2022-07-21 04:26:50,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:26:50,038 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 892 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 2454 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:50,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 2454 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 04:26:50,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2022-07-21 04:26:50,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2797. [2022-07-21 04:26:50,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 2199 states have (on average 1.629831741700773) internal successors, (3584), 2251 states have internal predecessors, (3584), 455 states have call successors, (455), 123 states have call predecessors, (455), 142 states have return successors, (518), 433 states have call predecessors, (518), 450 states have call successors, (518) [2022-07-21 04:26:50,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 4557 transitions. [2022-07-21 04:26:50,169 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 4557 transitions. Word has length 161 [2022-07-21 04:26:50,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:50,171 INFO L495 AbstractCegarLoop]: Abstraction has 2797 states and 4557 transitions. [2022-07-21 04:26:50,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 04:26:50,171 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 4557 transitions. [2022-07-21 04:26:50,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-21 04:26:50,176 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:50,176 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:50,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-21 04:26:50,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:50,391 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:50,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:50,392 INFO L85 PathProgramCache]: Analyzing trace with hash 682256033, now seen corresponding path program 1 times [2022-07-21 04:26:50,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:50,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618503862] [2022-07-21 04:26:50,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:50,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:50,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:50,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:50,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:50,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:26:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:50,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:50,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:50,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:26:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:50,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:50,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:50,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:50,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:50,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:50,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:26:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:50,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:26:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:50,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:50,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:50,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:26:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:50,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:26:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:50,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:26:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:50,923 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 04:26:50,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:50,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618503862] [2022-07-21 04:26:50,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618503862] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:50,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009353161] [2022-07-21 04:26:50,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:50,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:50,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:50,925 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:26:50,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-21 04:26:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:51,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 2112 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 04:26:51,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:51,423 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-21 04:26:51,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:51,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009353161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:51,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:51,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2022-07-21 04:26:51,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628357191] [2022-07-21 04:26:51,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:51,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:26:51,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:51,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:26:51,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:26:51,426 INFO L87 Difference]: Start difference. First operand 2797 states and 4557 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-21 04:26:51,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:51,878 INFO L93 Difference]: Finished difference Result 2912 states and 4747 transitions. [2022-07-21 04:26:51,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:26:51,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 163 [2022-07-21 04:26:51,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:51,894 INFO L225 Difference]: With dead ends: 2912 [2022-07-21 04:26:51,894 INFO L226 Difference]: Without dead ends: 2897 [2022-07-21 04:26:51,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:26:51,896 INFO L413 NwaCegarLoop]: 981 mSDtfsCounter, 894 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:51,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 2503 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 04:26:51,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2022-07-21 04:26:51,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2806. [2022-07-21 04:26:51,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2806 states, 2208 states have (on average 1.6272644927536233) internal successors, (3593), 2260 states have internal predecessors, (3593), 455 states have call successors, (455), 123 states have call predecessors, (455), 142 states have return successors, (518), 433 states have call predecessors, (518), 450 states have call successors, (518) [2022-07-21 04:26:52,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2806 states to 2806 states and 4566 transitions. [2022-07-21 04:26:52,010 INFO L78 Accepts]: Start accepts. Automaton has 2806 states and 4566 transitions. Word has length 163 [2022-07-21 04:26:52,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:52,010 INFO L495 AbstractCegarLoop]: Abstraction has 2806 states and 4566 transitions. [2022-07-21 04:26:52,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-21 04:26:52,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2806 states and 4566 transitions. [2022-07-21 04:26:52,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-21 04:26:52,016 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:52,016 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:52,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-21 04:26:52,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:52,240 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:52,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:52,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1724991932, now seen corresponding path program 1 times [2022-07-21 04:26:52,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:52,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687224964] [2022-07-21 04:26:52,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:52,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:52,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:52,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:52,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:52,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:26:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:52,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:52,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:52,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:26:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:52,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:52,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:52,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:52,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:52,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:52,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:26:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:52,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:26:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:52,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:52,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:52,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:26:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:52,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:26:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:52,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:26:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:52,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:26:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:52,736 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 04:26:52,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:52,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687224964] [2022-07-21 04:26:52,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687224964] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:52,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259453779] [2022-07-21 04:26:52,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:52,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:52,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:52,738 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:26:52,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-21 04:26:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:53,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 2128 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 04:26:53,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:53,196 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-21 04:26:53,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:53,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259453779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:53,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:53,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-07-21 04:26:53,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153411732] [2022-07-21 04:26:53,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:53,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:26:53,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:53,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:26:53,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:26:53,198 INFO L87 Difference]: Start difference. First operand 2806 states and 4566 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 04:26:53,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:53,597 INFO L93 Difference]: Finished difference Result 3046 states and 4904 transitions. [2022-07-21 04:26:53,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 04:26:53,598 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) Word has length 169 [2022-07-21 04:26:53,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:53,611 INFO L225 Difference]: With dead ends: 3046 [2022-07-21 04:26:53,612 INFO L226 Difference]: Without dead ends: 3031 [2022-07-21 04:26:53,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-07-21 04:26:53,614 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 947 mSDsluCounter, 2884 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 3875 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:53,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 3875 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 04:26:53,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2022-07-21 04:26:53,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 2972. [2022-07-21 04:26:53,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2972 states, 2342 states have (on average 1.621263877028181) internal successors, (3797), 2394 states have internal predecessors, (3797), 471 states have call successors, (471), 141 states have call predecessors, (471), 158 states have return successors, (537), 447 states have call predecessors, (537), 466 states have call successors, (537) [2022-07-21 04:26:53,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 4805 transitions. [2022-07-21 04:26:53,723 INFO L78 Accepts]: Start accepts. Automaton has 2972 states and 4805 transitions. Word has length 169 [2022-07-21 04:26:53,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:53,724 INFO L495 AbstractCegarLoop]: Abstraction has 2972 states and 4805 transitions. [2022-07-21 04:26:53,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 04:26:53,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2972 states and 4805 transitions. [2022-07-21 04:26:53,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-21 04:26:53,729 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:53,729 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:53,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-07-21 04:26:53,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-21 04:26:53,955 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:53,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:53,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1505301655, now seen corresponding path program 1 times [2022-07-21 04:26:53,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:53,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97270077] [2022-07-21 04:26:53,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:53,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:54,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:54,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:54,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:54,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:26:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:54,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:54,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:54,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:26:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:54,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:54,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:54,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:54,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:54,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:54,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:26:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:54,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:26:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:54,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:54,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:54,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:26:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:54,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:26:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:54,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:26:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:54,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:26:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:54,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 04:26:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:54,512 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-21 04:26:54,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:54,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97270077] [2022-07-21 04:26:54,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97270077] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:54,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120139525] [2022-07-21 04:26:54,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:54,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:54,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:54,516 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:26:54,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-21 04:26:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:54,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 2165 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 04:26:54,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:54,875 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-21 04:26:54,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:54,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120139525] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:54,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:54,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2022-07-21 04:26:54,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282959323] [2022-07-21 04:26:54,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:54,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:26:54,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:54,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:26:54,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:26:54,877 INFO L87 Difference]: Start difference. First operand 2972 states and 4805 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 04:26:54,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:54,983 INFO L93 Difference]: Finished difference Result 5918 states and 9580 transitions. [2022-07-21 04:26:54,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:26:54,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 180 [2022-07-21 04:26:54,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:54,998 INFO L225 Difference]: With dead ends: 5918 [2022-07-21 04:26:54,998 INFO L226 Difference]: Without dead ends: 2941 [2022-07-21 04:26:55,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:26:55,008 INFO L413 NwaCegarLoop]: 970 mSDtfsCounter, 11 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2901 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:55,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2901 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:26:55,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2022-07-21 04:26:55,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 2941. [2022-07-21 04:26:55,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2941 states, 2314 states have (on average 1.6210025929127052) internal successors, (3751), 2364 states have internal predecessors, (3751), 470 states have call successors, (470), 141 states have call predecessors, (470), 156 states have return successors, (534), 446 states have call predecessors, (534), 465 states have call successors, (534) [2022-07-21 04:26:55,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2941 states to 2941 states and 4755 transitions. [2022-07-21 04:26:55,181 INFO L78 Accepts]: Start accepts. Automaton has 2941 states and 4755 transitions. Word has length 180 [2022-07-21 04:26:55,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:55,181 INFO L495 AbstractCegarLoop]: Abstraction has 2941 states and 4755 transitions. [2022-07-21 04:26:55,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 04:26:55,182 INFO L276 IsEmpty]: Start isEmpty. Operand 2941 states and 4755 transitions. [2022-07-21 04:26:55,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-21 04:26:55,187 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:55,188 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:55,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-07-21 04:26:55,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-21 04:26:55,404 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:55,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:55,404 INFO L85 PathProgramCache]: Analyzing trace with hash 445214060, now seen corresponding path program 1 times [2022-07-21 04:26:55,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:55,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758923558] [2022-07-21 04:26:55,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:55,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:55,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:55,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:55,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:55,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:26:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:55,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:55,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:55,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 04:26:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:55,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:55,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:55,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:55,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:55,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:55,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:26:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:55,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:26:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:55,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:55,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:55,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:26:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:55,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:26:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:55,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:26:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:55,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:26:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:55,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 04:26:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:55,901 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-21 04:26:55,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:55,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758923558] [2022-07-21 04:26:55,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758923558] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:55,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464739076] [2022-07-21 04:26:55,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:55,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:55,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:55,903 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:26:55,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-21 04:26:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:56,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 2168 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-21 04:26:56,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:56,278 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:26:56,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:56,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464739076] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:56,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:56,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-07-21 04:26:56,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322401537] [2022-07-21 04:26:56,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:56,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:26:56,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:56,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:26:56,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:26:56,279 INFO L87 Difference]: Start difference. First operand 2941 states and 4755 transitions. Second operand has 7 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-21 04:26:56,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:56,433 INFO L93 Difference]: Finished difference Result 5851 states and 9474 transitions. [2022-07-21 04:26:56,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:26:56,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 182 [2022-07-21 04:26:56,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:56,444 INFO L225 Difference]: With dead ends: 5851 [2022-07-21 04:26:56,445 INFO L226 Difference]: Without dead ends: 2941 [2022-07-21 04:26:56,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:26:56,452 INFO L413 NwaCegarLoop]: 988 mSDtfsCounter, 143 mSDsluCounter, 4765 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5753 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:56,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5753 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:26:56,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2022-07-21 04:26:56,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 2920. [2022-07-21 04:26:56,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2293 states have (on average 1.6210204971652857) internal successors, (3717), 2343 states have internal predecessors, (3717), 470 states have call successors, (470), 141 states have call predecessors, (470), 156 states have return successors, (534), 446 states have call predecessors, (534), 465 states have call successors, (534) [2022-07-21 04:26:56,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4721 transitions. [2022-07-21 04:26:56,565 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4721 transitions. Word has length 182 [2022-07-21 04:26:56,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:56,565 INFO L495 AbstractCegarLoop]: Abstraction has 2920 states and 4721 transitions. [2022-07-21 04:26:56,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-21 04:26:56,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4721 transitions. [2022-07-21 04:26:56,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-21 04:26:56,570 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:56,571 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:56,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-07-21 04:26:56,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-21 04:26:56,788 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:56,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:56,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1585554801, now seen corresponding path program 1 times [2022-07-21 04:26:56,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:56,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596534943] [2022-07-21 04:26:56,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:56,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:56,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:56,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:56,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:56,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 04:26:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:56,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:56,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:57,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:26:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:57,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:57,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:57,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:57,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:57,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:57,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:26:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:57,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:26:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:57,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:57,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:57,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:26:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:57,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:26:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:57,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:26:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:57,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:26:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:57,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 04:26:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:57,323 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-21 04:26:57,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:57,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596534943] [2022-07-21 04:26:57,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596534943] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:26:57,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150853417] [2022-07-21 04:26:57,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:57,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:26:57,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:57,328 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:26:57,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-07-21 04:26:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:57,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 2174 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:26:57,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:26:57,652 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:26:57,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:26:57,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150853417] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:57,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:26:57,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-21 04:26:57,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538757246] [2022-07-21 04:26:57,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:57,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:26:57,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:57,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:26:57,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:26:57,654 INFO L87 Difference]: Start difference. First operand 2920 states and 4721 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 04:26:57,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:26:57,815 INFO L93 Difference]: Finished difference Result 5809 states and 9408 transitions. [2022-07-21 04:26:57,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:26:57,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 184 [2022-07-21 04:26:57,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:26:57,826 INFO L225 Difference]: With dead ends: 5809 [2022-07-21 04:26:57,827 INFO L226 Difference]: Without dead ends: 2920 [2022-07-21 04:26:57,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:26:57,837 INFO L413 NwaCegarLoop]: 929 mSDtfsCounter, 176 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:26:57,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2734 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:26:57,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2022-07-21 04:26:57,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 2920. [2022-07-21 04:26:57,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2293 states have (on average 1.620584387265591) internal successors, (3716), 2343 states have internal predecessors, (3716), 470 states have call successors, (470), 141 states have call predecessors, (470), 156 states have return successors, (534), 446 states have call predecessors, (534), 465 states have call successors, (534) [2022-07-21 04:26:57,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4720 transitions. [2022-07-21 04:26:57,946 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4720 transitions. Word has length 184 [2022-07-21 04:26:57,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:26:57,947 INFO L495 AbstractCegarLoop]: Abstraction has 2920 states and 4720 transitions. [2022-07-21 04:26:57,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 04:26:57,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4720 transitions. [2022-07-21 04:26:57,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-21 04:26:57,952 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:57,952 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:26:57,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-07-21 04:26:58,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-21 04:26:58,167 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:58,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:58,167 INFO L85 PathProgramCache]: Analyzing trace with hash -752967401, now seen corresponding path program 1 times [2022-07-21 04:26:58,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:58,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932762235] [2022-07-21 04:26:58,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:58,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:26:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:26:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 04:26:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:26:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:26:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:26:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:26:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:26:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:26:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 04:26:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,641 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-21 04:26:58,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:58,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932762235] [2022-07-21 04:26:58,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932762235] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:58,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:26:58,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 04:26:58,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872825470] [2022-07-21 04:26:58,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:58,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:26:58,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:58,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:26:58,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:26:58,644 INFO L87 Difference]: Start difference. First operand 2920 states and 4720 transitions. Second operand has 8 states, 8 states have (on average 15.125) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 04:27:04,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:27:04,128 INFO L93 Difference]: Finished difference Result 6713 states and 10997 transitions. [2022-07-21 04:27:04,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 04:27:04,129 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 185 [2022-07-21 04:27:04,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:27:04,145 INFO L225 Difference]: With dead ends: 6713 [2022-07-21 04:27:04,146 INFO L226 Difference]: Without dead ends: 3795 [2022-07-21 04:27:04,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:27:04,161 INFO L413 NwaCegarLoop]: 1017 mSDtfsCounter, 2478 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 3234 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2567 SdHoareTripleChecker+Valid, 2064 SdHoareTripleChecker+Invalid, 4040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 3234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-21 04:27:04,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2567 Valid, 2064 Invalid, 4040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 3234 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-21 04:27:04,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3795 states. [2022-07-21 04:27:04,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3795 to 2880. [2022-07-21 04:27:04,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2880 states, 2256 states have (on average 1.6192375886524824) internal successors, (3653), 2304 states have internal predecessors, (3653), 469 states have call successors, (469), 141 states have call predecessors, (469), 154 states have return successors, (531), 445 states have call predecessors, (531), 464 states have call successors, (531) [2022-07-21 04:27:04,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 4653 transitions. [2022-07-21 04:27:04,480 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 4653 transitions. Word has length 185 [2022-07-21 04:27:04,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:27:04,481 INFO L495 AbstractCegarLoop]: Abstraction has 2880 states and 4653 transitions. [2022-07-21 04:27:04,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 04:27:04,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 4653 transitions. [2022-07-21 04:27:04,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-21 04:27:04,486 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:27:04,486 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:27:04,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-21 04:27:04,486 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:27:04,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:27:04,487 INFO L85 PathProgramCache]: Analyzing trace with hash -2080513583, now seen corresponding path program 1 times [2022-07-21 04:27:04,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:27:04,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239436895] [2022-07-21 04:27:04,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:27:04,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:27:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:04,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:04,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:04,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:27:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:04,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:27:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:04,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:04,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:27:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:04,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 04:27:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:04,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:04,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:04,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:05,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:05,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:05,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:27:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:05,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:27:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:05,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:05,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:05,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:27:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:05,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:27:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:05,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:27:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:05,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:27:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:05,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 04:27:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:05,024 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-21 04:27:05,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:27:05,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239436895] [2022-07-21 04:27:05,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239436895] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:27:05,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:27:05,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 04:27:05,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388179959] [2022-07-21 04:27:05,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:27:05,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 04:27:05,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:27:05,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 04:27:05,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:27:05,027 INFO L87 Difference]: Start difference. First operand 2880 states and 4653 transitions. Second operand has 11 states, 10 states have (on average 12.2) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-21 04:27:12,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:27:12,556 INFO L93 Difference]: Finished difference Result 6592 states and 10796 transitions. [2022-07-21 04:27:12,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 04:27:12,557 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 186 [2022-07-21 04:27:12,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:27:12,569 INFO L225 Difference]: With dead ends: 6592 [2022-07-21 04:27:12,569 INFO L226 Difference]: Without dead ends: 3813 [2022-07-21 04:27:12,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2022-07-21 04:27:12,576 INFO L413 NwaCegarLoop]: 1020 mSDtfsCounter, 2055 mSDsluCounter, 2130 mSDsCounter, 0 mSdLazyCounter, 6544 mSolverCounterSat, 646 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2144 SdHoareTripleChecker+Valid, 3150 SdHoareTripleChecker+Invalid, 7190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 646 IncrementalHoareTripleChecker+Valid, 6544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-07-21 04:27:12,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2144 Valid, 3150 Invalid, 7190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [646 Valid, 6544 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-07-21 04:27:12,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3813 states. [2022-07-21 04:27:12,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3813 to 2880. [2022-07-21 04:27:12,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2880 states, 2256 states have (on average 1.6187943262411348) internal successors, (3652), 2304 states have internal predecessors, (3652), 469 states have call successors, (469), 141 states have call predecessors, (469), 154 states have return successors, (531), 445 states have call predecessors, (531), 464 states have call successors, (531) [2022-07-21 04:27:12,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 4652 transitions. [2022-07-21 04:27:12,854 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 4652 transitions. Word has length 186 [2022-07-21 04:27:12,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:27:12,855 INFO L495 AbstractCegarLoop]: Abstraction has 2880 states and 4652 transitions. [2022-07-21 04:27:12,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-21 04:27:12,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 4652 transitions. [2022-07-21 04:27:12,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-21 04:27:12,860 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:27:12,860 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:27:12,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-21 04:27:12,860 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:27:12,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:27:12,861 INFO L85 PathProgramCache]: Analyzing trace with hash -369085445, now seen corresponding path program 1 times [2022-07-21 04:27:12,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:27:12,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52897251] [2022-07-21 04:27:12,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:27:12,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:27:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:12,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:12,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:12,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:27:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:12,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:27:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:13,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:13,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:27:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:13,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:27:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:13,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:13,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:13,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:13,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:13,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:13,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:27:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:13,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:27:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:13,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:13,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:13,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:27:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:13,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:27:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:13,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:27:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:13,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:27:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:13,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 04:27:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:13,409 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-21 04:27:13,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:27:13,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52897251] [2022-07-21 04:27:13,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52897251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:27:13,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:27:13,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 04:27:13,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97637647] [2022-07-21 04:27:13,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:27:13,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 04:27:13,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:27:13,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 04:27:13,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:27:13,411 INFO L87 Difference]: Start difference. First operand 2880 states and 4652 transitions. Second operand has 11 states, 10 states have (on average 12.4) internal successors, (124), 6 states have internal predecessors, (124), 3 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-21 04:27:20,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:27:20,384 INFO L93 Difference]: Finished difference Result 6608 states and 10823 transitions. [2022-07-21 04:27:20,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 04:27:20,384 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.4) internal successors, (124), 6 states have internal predecessors, (124), 3 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 187 [2022-07-21 04:27:20,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:27:20,399 INFO L225 Difference]: With dead ends: 6608 [2022-07-21 04:27:20,399 INFO L226 Difference]: Without dead ends: 3771 [2022-07-21 04:27:20,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2022-07-21 04:27:20,407 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 2032 mSDsluCounter, 2170 mSDsCounter, 0 mSdLazyCounter, 6254 mSolverCounterSat, 638 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2121 SdHoareTripleChecker+Valid, 3154 SdHoareTripleChecker+Invalid, 6892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 638 IncrementalHoareTripleChecker+Valid, 6254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:27:20,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2121 Valid, 3154 Invalid, 6892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [638 Valid, 6254 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-21 04:27:20,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3771 states. [2022-07-21 04:27:20,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3771 to 2868. [2022-07-21 04:27:20,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2868 states, 2244 states have (on average 1.621212121212121) internal successors, (3638), 2292 states have internal predecessors, (3638), 469 states have call successors, (469), 141 states have call predecessors, (469), 154 states have return successors, (531), 445 states have call predecessors, (531), 464 states have call successors, (531) [2022-07-21 04:27:20,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2868 states to 2868 states and 4638 transitions. [2022-07-21 04:27:20,808 INFO L78 Accepts]: Start accepts. Automaton has 2868 states and 4638 transitions. Word has length 187 [2022-07-21 04:27:20,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:27:20,808 INFO L495 AbstractCegarLoop]: Abstraction has 2868 states and 4638 transitions. [2022-07-21 04:27:20,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.4) internal successors, (124), 6 states have internal predecessors, (124), 3 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-21 04:27:20,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2868 states and 4638 transitions. [2022-07-21 04:27:20,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-21 04:27:20,813 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:27:20,814 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:27:20,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-21 04:27:20,814 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:27:20,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:27:20,815 INFO L85 PathProgramCache]: Analyzing trace with hash -181230407, now seen corresponding path program 1 times [2022-07-21 04:27:20,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:27:20,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833874175] [2022-07-21 04:27:20,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:27:20,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:27:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:20,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:20,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:20,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:27:20,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:20,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:27:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:20,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:20,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:27:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:21,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:27:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:21,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:21,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:21,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:21,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:21,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:21,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:27:21,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:21,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:27:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:21,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:21,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:21,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:27:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:21,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:27:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:21,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:27:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:21,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:27:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:21,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 04:27:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:21,321 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-21 04:27:21,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:27:21,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833874175] [2022-07-21 04:27:21,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833874175] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:27:21,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:27:21,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 04:27:21,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711520897] [2022-07-21 04:27:21,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:27:21,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 04:27:21,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:27:21,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 04:27:21,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:27:21,323 INFO L87 Difference]: Start difference. First operand 2868 states and 4638 transitions. Second operand has 11 states, 10 states have (on average 12.3) internal successors, (123), 6 states have internal predecessors, (123), 3 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-21 04:27:28,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:27:28,619 INFO L93 Difference]: Finished difference Result 6659 states and 10894 transitions. [2022-07-21 04:27:28,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 04:27:28,619 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.3) internal successors, (123), 6 states have internal predecessors, (123), 3 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 187 [2022-07-21 04:27:28,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:27:28,634 INFO L225 Difference]: With dead ends: 6659 [2022-07-21 04:27:28,634 INFO L226 Difference]: Without dead ends: 3828 [2022-07-21 04:27:28,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2022-07-21 04:27:28,641 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 1623 mSDsluCounter, 2154 mSDsCounter, 0 mSdLazyCounter, 6549 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 3141 SdHoareTripleChecker+Invalid, 7035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 6549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-07-21 04:27:28,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1712 Valid, 3141 Invalid, 7035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 6549 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-07-21 04:27:28,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3828 states. [2022-07-21 04:27:29,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3828 to 2872. [2022-07-21 04:27:29,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2872 states, 2248 states have (on average 1.6196619217081851) internal successors, (3641), 2296 states have internal predecessors, (3641), 469 states have call successors, (469), 141 states have call predecessors, (469), 154 states have return successors, (531), 445 states have call predecessors, (531), 464 states have call successors, (531) [2022-07-21 04:27:29,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2872 states to 2872 states and 4641 transitions. [2022-07-21 04:27:29,016 INFO L78 Accepts]: Start accepts. Automaton has 2872 states and 4641 transitions. Word has length 187 [2022-07-21 04:27:29,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:27:29,017 INFO L495 AbstractCegarLoop]: Abstraction has 2872 states and 4641 transitions. [2022-07-21 04:27:29,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.3) internal successors, (123), 6 states have internal predecessors, (123), 3 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-21 04:27:29,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2872 states and 4641 transitions. [2022-07-21 04:27:29,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-21 04:27:29,021 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:27:29,022 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:27:29,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-21 04:27:29,022 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:27:29,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:27:29,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1578279864, now seen corresponding path program 1 times [2022-07-21 04:27:29,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:27:29,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122781603] [2022-07-21 04:27:29,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:27:29,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:27:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:29,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:29,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:29,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:27:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:29,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:27:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:29,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:29,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:27:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:29,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:27:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:29,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:29,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:29,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:29,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:29,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:29,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:27:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:29,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:27:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:29,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:29,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:29,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:27:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:29,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:27:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:29,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:27:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:29,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:27:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:29,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 04:27:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:29,765 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-21 04:27:29,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:27:29,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122781603] [2022-07-21 04:27:29,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122781603] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:27:29,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143504545] [2022-07-21 04:27:29,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:27:29,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:27:29,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:27:29,768 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:27:29,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-07-21 04:27:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:30,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 2179 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-21 04:27:30,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:27:30,362 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 04:27:30,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:27:30,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143504545] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:27:30,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:27:30,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 20 [2022-07-21 04:27:30,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202340187] [2022-07-21 04:27:30,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:27:30,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:27:30,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:27:30,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:27:30,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2022-07-21 04:27:30,365 INFO L87 Difference]: Start difference. First operand 2872 states and 4641 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 6 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-21 04:27:31,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:27:31,925 INFO L93 Difference]: Finished difference Result 5692 states and 9242 transitions. [2022-07-21 04:27:31,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:27:31,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 6 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) Word has length 188 [2022-07-21 04:27:31,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:27:31,937 INFO L225 Difference]: With dead ends: 5692 [2022-07-21 04:27:31,937 INFO L226 Difference]: Without dead ends: 2935 [2022-07-21 04:27:31,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2022-07-21 04:27:31,944 INFO L413 NwaCegarLoop]: 1107 mSDtfsCounter, 1647 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 1878 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1758 SdHoareTripleChecker+Valid, 1991 SdHoareTripleChecker+Invalid, 2300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 1878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:27:31,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1758 Valid, 1991 Invalid, 2300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 1878 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 04:27:31,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2022-07-21 04:27:32,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 2760. [2022-07-21 04:27:32,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2760 states, 2120 states have (on average 1.6056603773584905) internal successors, (3404), 2182 states have internal predecessors, (3404), 495 states have call successors, (495), 131 states have call predecessors, (495), 144 states have return successors, (544), 468 states have call predecessors, (544), 490 states have call successors, (544) [2022-07-21 04:27:32,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2760 states to 2760 states and 4443 transitions. [2022-07-21 04:27:32,255 INFO L78 Accepts]: Start accepts. Automaton has 2760 states and 4443 transitions. Word has length 188 [2022-07-21 04:27:32,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:27:32,255 INFO L495 AbstractCegarLoop]: Abstraction has 2760 states and 4443 transitions. [2022-07-21 04:27:32,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 6 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-21 04:27:32,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2760 states and 4443 transitions. [2022-07-21 04:27:32,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-21 04:27:32,258 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:27:32,258 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:27:32,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-07-21 04:27:32,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:27:32,459 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:27:32,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:27:32,459 INFO L85 PathProgramCache]: Analyzing trace with hash 739246202, now seen corresponding path program 1 times [2022-07-21 04:27:32,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:27:32,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967663773] [2022-07-21 04:27:32,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:27:32,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:27:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:32,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:32,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:32,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:27:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:32,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:27:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:32,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:32,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:27:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:32,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:27:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:32,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:32,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:33,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:33,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:33,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:33,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:27:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:33,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:27:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:33,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:33,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:33,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:27:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:33,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:27:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:33,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:27:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:33,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:27:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:33,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 04:27:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:33,119 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-21 04:27:33,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:27:33,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967663773] [2022-07-21 04:27:33,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967663773] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:27:33,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716076680] [2022-07-21 04:27:33,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:27:33,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:27:33,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:27:33,123 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:27:33,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-07-21 04:27:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:33,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 2182 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-21 04:27:33,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:27:33,612 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-21 04:27:33,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:27:33,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716076680] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:27:33,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:27:33,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 21 [2022-07-21 04:27:33,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996485030] [2022-07-21 04:27:33,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:27:33,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:27:33,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:27:33,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:27:33,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2022-07-21 04:27:33,614 INFO L87 Difference]: Start difference. First operand 2760 states and 4443 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-21 04:27:36,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:27:36,331 INFO L93 Difference]: Finished difference Result 8881 states and 14552 transitions. [2022-07-21 04:27:36,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 04:27:36,332 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) Word has length 188 [2022-07-21 04:27:36,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:27:36,357 INFO L225 Difference]: With dead ends: 8881 [2022-07-21 04:27:36,357 INFO L226 Difference]: Without dead ends: 6236 [2022-07-21 04:27:36,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=823, Unknown=0, NotChecked=0, Total=930 [2022-07-21 04:27:36,368 INFO L413 NwaCegarLoop]: 1090 mSDtfsCounter, 2264 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 3634 mSolverCounterSat, 552 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2354 SdHoareTripleChecker+Valid, 2713 SdHoareTripleChecker+Invalid, 4186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 552 IncrementalHoareTripleChecker+Valid, 3634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:27:36,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2354 Valid, 2713 Invalid, 4186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [552 Valid, 3634 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-21 04:27:36,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6236 states. [2022-07-21 04:27:36,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6236 to 5786. [2022-07-21 04:27:36,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5786 states, 4426 states have (on average 1.605964753727971) internal successors, (7108), 4559 states have internal predecessors, (7108), 1037 states have call successors, (1037), 263 states have call predecessors, (1037), 322 states have return successors, (1281), 1007 states have call predecessors, (1281), 1032 states have call successors, (1281) [2022-07-21 04:27:36,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5786 states to 5786 states and 9426 transitions. [2022-07-21 04:27:36,934 INFO L78 Accepts]: Start accepts. Automaton has 5786 states and 9426 transitions. Word has length 188 [2022-07-21 04:27:36,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:27:36,935 INFO L495 AbstractCegarLoop]: Abstraction has 5786 states and 9426 transitions. [2022-07-21 04:27:36,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-21 04:27:36,935 INFO L276 IsEmpty]: Start isEmpty. Operand 5786 states and 9426 transitions. [2022-07-21 04:27:36,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-21 04:27:36,938 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:27:36,938 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:27:36,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-07-21 04:27:37,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-07-21 04:27:37,139 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:27:37,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:27:37,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1574767063, now seen corresponding path program 1 times [2022-07-21 04:27:37,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:27:37,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399694752] [2022-07-21 04:27:37,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:27:37,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:27:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:37,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:37,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:37,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:27:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:37,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:27:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:37,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:37,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:27:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:37,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:27:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:37,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:37,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:37,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:37,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:37,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:37,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:27:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:37,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:27:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:37,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:37,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:37,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:27:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:37,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:27:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:37,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:27:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:37,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:27:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:37,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 04:27:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:37,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 04:27:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:37,707 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-21 04:27:37,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:27:37,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399694752] [2022-07-21 04:27:37,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399694752] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:27:37,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:27:37,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 04:27:37,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398837915] [2022-07-21 04:27:37,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:27:37,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 04:27:37,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:27:37,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 04:27:37,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:27:37,709 INFO L87 Difference]: Start difference. First operand 5786 states and 9426 transitions. Second operand has 14 states, 14 states have (on average 8.571428571428571) internal successors, (120), 9 states have internal predecessors, (120), 5 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-21 04:28:14,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:28:14,441 INFO L93 Difference]: Finished difference Result 29480 states and 50332 transitions. [2022-07-21 04:28:14,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-07-21 04:28:14,441 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.571428571428571) internal successors, (120), 9 states have internal predecessors, (120), 5 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) Word has length 193 [2022-07-21 04:28:14,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:28:14,544 INFO L225 Difference]: With dead ends: 29480 [2022-07-21 04:28:14,545 INFO L226 Difference]: Without dead ends: 23813 [2022-07-21 04:28:14,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3021 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=1595, Invalid=6777, Unknown=0, NotChecked=0, Total=8372 [2022-07-21 04:28:14,575 INFO L413 NwaCegarLoop]: 1841 mSDtfsCounter, 12454 mSDsluCounter, 3562 mSDsCounter, 0 mSdLazyCounter, 18308 mSolverCounterSat, 7185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12511 SdHoareTripleChecker+Valid, 5403 SdHoareTripleChecker+Invalid, 25493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7185 IncrementalHoareTripleChecker+Valid, 18308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:28:14,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12511 Valid, 5403 Invalid, 25493 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7185 Valid, 18308 Invalid, 0 Unknown, 0 Unchecked, 25.9s Time] [2022-07-21 04:28:14,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23813 states. [2022-07-21 04:28:15,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23813 to 5920. [2022-07-21 04:28:15,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5920 states, 4521 states have (on average 1.5916832559168326) internal successors, (7196), 4638 states have internal predecessors, (7196), 1061 states have call successors, (1061), 276 states have call predecessors, (1061), 337 states have return successors, (1297), 1049 states have call predecessors, (1297), 1056 states have call successors, (1297) [2022-07-21 04:28:15,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5920 states to 5920 states and 9554 transitions. [2022-07-21 04:28:15,712 INFO L78 Accepts]: Start accepts. Automaton has 5920 states and 9554 transitions. Word has length 193 [2022-07-21 04:28:15,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:28:15,713 INFO L495 AbstractCegarLoop]: Abstraction has 5920 states and 9554 transitions. [2022-07-21 04:28:15,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.571428571428571) internal successors, (120), 9 states have internal predecessors, (120), 5 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-21 04:28:15,713 INFO L276 IsEmpty]: Start isEmpty. Operand 5920 states and 9554 transitions. [2022-07-21 04:28:15,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-21 04:28:15,716 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:28:15,717 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:28:15,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-21 04:28:15,717 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:28:15,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:28:15,717 INFO L85 PathProgramCache]: Analyzing trace with hash -791927531, now seen corresponding path program 1 times [2022-07-21 04:28:15,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:28:15,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539037838] [2022-07-21 04:28:15,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:28:15,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:28:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:15,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:28:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:15,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:15,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:28:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:15,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:28:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:15,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:15,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:28:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:16,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:28:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:16,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:16,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:16,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:28:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:16,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:16,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:16,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:28:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:16,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:28:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:16,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:16,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:16,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:28:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:16,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:28:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:16,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:28:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:16,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:28:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:16,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 04:28:16,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:16,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 04:28:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:16,544 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 04:28:16,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:28:16,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539037838] [2022-07-21 04:28:16,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539037838] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:28:16,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419051664] [2022-07-21 04:28:16,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:28:16,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:28:16,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:28:16,545 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:28:16,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-07-21 04:28:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:16,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 2198 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 04:28:16,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:28:16,902 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-21 04:28:16,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:28:16,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419051664] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:28:16,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:28:16,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [23] total 26 [2022-07-21 04:28:16,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300225977] [2022-07-21 04:28:16,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:28:16,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:28:16,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:28:16,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:28:16,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2022-07-21 04:28:16,905 INFO L87 Difference]: Start difference. First operand 5920 states and 9554 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-21 04:28:17,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:28:17,763 INFO L93 Difference]: Finished difference Result 6243 states and 10082 transitions. [2022-07-21 04:28:17,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:28:17,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 193 [2022-07-21 04:28:17,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:28:17,879 INFO L225 Difference]: With dead ends: 6243 [2022-07-21 04:28:17,879 INFO L226 Difference]: Without dead ends: 6228 [2022-07-21 04:28:17,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=726, Unknown=0, NotChecked=0, Total=812 [2022-07-21 04:28:17,884 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 70 mSDsluCounter, 2946 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 3953 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:28:17,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 3953 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:28:17,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6228 states. [2022-07-21 04:28:18,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6228 to 5968. [2022-07-21 04:28:18,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5968 states, 4569 states have (on average 1.5854672794922302) internal successors, (7244), 4686 states have internal predecessors, (7244), 1061 states have call successors, (1061), 276 states have call predecessors, (1061), 337 states have return successors, (1297), 1049 states have call predecessors, (1297), 1056 states have call successors, (1297) [2022-07-21 04:28:18,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5968 states to 5968 states and 9602 transitions. [2022-07-21 04:28:18,778 INFO L78 Accepts]: Start accepts. Automaton has 5968 states and 9602 transitions. Word has length 193 [2022-07-21 04:28:18,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:28:18,778 INFO L495 AbstractCegarLoop]: Abstraction has 5968 states and 9602 transitions. [2022-07-21 04:28:18,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-21 04:28:18,779 INFO L276 IsEmpty]: Start isEmpty. Operand 5968 states and 9602 transitions. [2022-07-21 04:28:18,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-07-21 04:28:18,784 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:28:18,784 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:28:18,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-07-21 04:28:18,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-07-21 04:28:18,985 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:28:18,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:28:18,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1671725084, now seen corresponding path program 1 times [2022-07-21 04:28:18,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:28:18,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41845913] [2022-07-21 04:28:18,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:28:18,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:28:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:28:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:28:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:28:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:28:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:28:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:28:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:28:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:28:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:28:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:28:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:28:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:28:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 04:28:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 04:28:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 04:28:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 04:28:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-21 04:28:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 04:28:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,634 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-21 04:28:19,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:28:19,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41845913] [2022-07-21 04:28:19,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41845913] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:28:19,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12337006] [2022-07-21 04:28:19,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:28:19,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:28:19,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:28:19,640 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:28:19,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-07-21 04:28:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:19,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 2303 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 04:28:19,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:28:20,268 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-21 04:28:20,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 04:28:21,066 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-21 04:28:21,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12337006] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 04:28:21,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 04:28:21,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9, 8] total 29 [2022-07-21 04:28:21,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947216831] [2022-07-21 04:28:21,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 04:28:21,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-21 04:28:21,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:28:21,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-21 04:28:21,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2022-07-21 04:28:21,069 INFO L87 Difference]: Start difference. First operand 5968 states and 9602 transitions. Second operand has 29 states, 29 states have (on average 11.172413793103448) internal successors, (324), 20 states have internal predecessors, (324), 10 states have call successors, (65), 9 states have call predecessors, (65), 15 states have return successors, (65), 16 states have call predecessors, (65), 9 states have call successors, (65) [2022-07-21 04:29:38,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:29:38,438 INFO L93 Difference]: Finished difference Result 53927 states and 97873 transitions. [2022-07-21 04:29:38,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2022-07-21 04:29:38,439 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 11.172413793103448) internal successors, (324), 20 states have internal predecessors, (324), 10 states have call successors, (65), 9 states have call predecessors, (65), 15 states have return successors, (65), 16 states have call predecessors, (65), 9 states have call successors, (65) Word has length 236 [2022-07-21 04:29:38,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:29:38,733 INFO L225 Difference]: With dead ends: 53927 [2022-07-21 04:29:38,733 INFO L226 Difference]: Without dead ends: 48066 [2022-07-21 04:29:38,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 530 SyntacticMatches, 5 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15940 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=3644, Invalid=38586, Unknown=0, NotChecked=0, Total=42230 [2022-07-21 04:29:38,828 INFO L413 NwaCegarLoop]: 4240 mSDtfsCounter, 25465 mSDsluCounter, 20505 mSDsCounter, 0 mSdLazyCounter, 80848 mSolverCounterSat, 14882 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25465 SdHoareTripleChecker+Valid, 24745 SdHoareTripleChecker+Invalid, 95730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 14882 IncrementalHoareTripleChecker+Valid, 80848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.5s IncrementalHoareTripleChecker+Time [2022-07-21 04:29:38,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25465 Valid, 24745 Invalid, 95730 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [14882 Valid, 80848 Invalid, 0 Unknown, 0 Unchecked, 51.5s Time] [2022-07-21 04:29:38,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48066 states. [2022-07-21 04:29:44,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48066 to 30563. [2022-07-21 04:29:44,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30563 states, 23059 states have (on average 1.5577431805368835) internal successors, (35920), 23734 states have internal predecessors, (35920), 5757 states have call successors, (5757), 1089 states have call predecessors, (5757), 1746 states have return successors, (8547), 6011 states have call predecessors, (8547), 5752 states have call successors, (8547) [2022-07-21 04:29:44,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30563 states to 30563 states and 50224 transitions. [2022-07-21 04:29:44,659 INFO L78 Accepts]: Start accepts. Automaton has 30563 states and 50224 transitions. Word has length 236 [2022-07-21 04:29:44,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:29:44,659 INFO L495 AbstractCegarLoop]: Abstraction has 30563 states and 50224 transitions. [2022-07-21 04:29:44,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 11.172413793103448) internal successors, (324), 20 states have internal predecessors, (324), 10 states have call successors, (65), 9 states have call predecessors, (65), 15 states have return successors, (65), 16 states have call predecessors, (65), 9 states have call successors, (65) [2022-07-21 04:29:44,660 INFO L276 IsEmpty]: Start isEmpty. Operand 30563 states and 50224 transitions. [2022-07-21 04:29:44,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-07-21 04:29:44,680 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:29:44,680 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:29:44,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-07-21 04:29:44,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:29:44,881 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:29:44,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:29:44,881 INFO L85 PathProgramCache]: Analyzing trace with hash -668374148, now seen corresponding path program 1 times [2022-07-21 04:29:44,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:29:44,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647544972] [2022-07-21 04:29:44,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:44,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:29:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:44,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:29:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:44,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:44,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:29:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:44,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:29:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:29:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:29:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:29:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:29:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:29:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:29:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:29:45,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:29:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:29:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 04:29:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 04:29:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 04:29:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 04:29:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 04:29:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 04:29:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,338 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-21 04:29:45,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:29:45,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647544972] [2022-07-21 04:29:45,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647544972] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:29:45,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:29:45,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 04:29:45,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398093058] [2022-07-21 04:29:45,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:29:45,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 04:29:45,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:29:45,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 04:29:45,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:29:45,340 INFO L87 Difference]: Start difference. First operand 30563 states and 50224 transitions. Second operand has 11 states, 10 states have (on average 14.5) internal successors, (145), 6 states have internal predecessors, (145), 3 states have call successors, (26), 6 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25)