/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:31:29,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:31:29,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:31:29,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:31:29,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:31:29,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:31:29,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:31:29,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:31:29,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:31:29,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:31:29,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:31:29,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:31:29,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:31:29,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:31:29,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:31:29,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:31:29,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:31:29,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:31:29,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:31:29,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:31:29,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:31:29,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:31:29,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:31:29,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:31:29,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 01:31:29,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 01:31:29,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 01:31:29,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 01:31:29,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 01:31:29,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 01:31:29,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 01:31:29,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 01:31:29,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 01:31:29,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 01:31:29,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 01:31:29,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 01:31:29,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 01:31:29,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 01:31:29,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:31:29,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:31:29,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:31:29,274 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 01:31:29,291 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:31:29,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:31:29,291 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:31:29,291 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:31:29,292 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:31:29,292 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:31:29,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:31:29,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:31:29,292 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:31:29,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:31:29,293 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:31:29,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:31:29,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:31:29,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:31:29,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:31:29,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:31:29,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:31:29,293 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:31:29,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:31:29,293 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:31:29,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:31:29,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:31:29,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:31:29,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:31:29,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:31:29,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:31:29,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:31:29,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:31:29,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:31:29,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:31:29,294 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:31:29,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:31:29,295 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:31:29,295 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:31:29,295 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:31:29,295 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:31:29,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:31:29,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:31:29,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:31:29,457 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:31:29,459 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:31:29,460 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c [2023-03-31 01:31:30,504 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:31:30,655 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:31:30,656 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c [2023-03-31 01:31:30,665 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe16000ea/0761d9ff1d464589917faa78089a861d/FLAGab4487447 [2023-03-31 01:31:30,679 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe16000ea/0761d9ff1d464589917faa78089a861d [2023-03-31 01:31:30,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:31:30,682 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:31:30,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:31:30,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:31:30,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:31:30,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:31:30" (1/1) ... [2023-03-31 01:31:30,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1043cf18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:31:30, skipping insertion in model container [2023-03-31 01:31:30,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:31:30" (1/1) ... [2023-03-31 01:31:30,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:31:30,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:31:30,831 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c[9488,9501] [2023-03-31 01:31:30,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:31:30,845 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:31:30,879 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c[9488,9501] [2023-03-31 01:31:30,879 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:31:30,889 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:31:30,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:31:30 WrapperNode [2023-03-31 01:31:30,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:31:30,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:31:30,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:31:30,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:31:30,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:31:30" (1/1) ... [2023-03-31 01:31:30,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:31:30" (1/1) ... [2023-03-31 01:31:30,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:31:30" (1/1) ... [2023-03-31 01:31:30,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:31:30" (1/1) ... [2023-03-31 01:31:30,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:31:30" (1/1) ... [2023-03-31 01:31:30,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:31:30" (1/1) ... [2023-03-31 01:31:30,920 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:31:30" (1/1) ... [2023-03-31 01:31:30,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:31:30" (1/1) ... [2023-03-31 01:31:30,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:31:30,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:31:30,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:31:30,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:31:30,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:31:30" (1/1) ... [2023-03-31 01:31:30,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:31:30,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:31:30,955 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) [2023-03-31 01:31:30,960 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 [2023-03-31 01:31:30,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:31:30,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:31:30,978 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:31:30,978 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 01:31:30,978 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-03-31 01:31:30,979 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-03-31 01:31:30,979 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-03-31 01:31:30,979 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-03-31 01:31:30,979 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-03-31 01:31:30,979 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-03-31 01:31:30,979 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:31:30,979 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-03-31 01:31:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:31:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:31:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:31:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:31:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:31:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:31:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-03-31 01:31:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:31:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 01:31:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:31:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:31:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:31:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:31:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:31:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-03-31 01:31:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:31:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:31:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:31:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:31:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:31:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:31:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:31:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:31:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:31:31,080 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:31:31,083 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:31:31,479 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:31:31,484 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:31:31,485 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 01:31:31,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:31:31 BoogieIcfgContainer [2023-03-31 01:31:31,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:31:31,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:31:31,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:31:31,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:31:31,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:31:30" (1/3) ... [2023-03-31 01:31:31,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@688278f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:31:31, skipping insertion in model container [2023-03-31 01:31:31,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:31:30" (2/3) ... [2023-03-31 01:31:31,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@688278f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:31:31, skipping insertion in model container [2023-03-31 01:31:31,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:31:31" (3/3) ... [2023-03-31 01:31:31,491 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c [2023-03-31 01:31:31,510 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:31:31,511 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:31:31,547 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:31:31,554 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@419ec89c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:31:31,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:31:31,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 97 states have (on average 1.6288659793814433) internal successors, (158), 99 states have internal predecessors, (158), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-03-31 01:31:31,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-03-31 01:31:31,566 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:31:31,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:31:31,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:31:31,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:31:31,571 INFO L85 PathProgramCache]: Analyzing trace with hash 201951296, now seen corresponding path program 1 times [2023-03-31 01:31:31,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:31:31,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818546585] [2023-03-31 01:31:31,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:31,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:31:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:31,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:31:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:31,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:31:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:31,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-03-31 01:31:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:31,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-03-31 01:31:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:31,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-03-31 01:31:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:31,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-03-31 01:31:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:31,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-03-31 01:31:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:31,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-03-31 01:31:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:31,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:31:31,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:31:31,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818546585] [2023-03-31 01:31:31,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818546585] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:31:31,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:31:31,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:31:31,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105519179] [2023-03-31 01:31:31,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:31:32,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 01:31:32,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:31:32,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 01:31:32,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:31:32,021 INFO L87 Difference]: Start difference. First operand has 119 states, 97 states have (on average 1.6288659793814433) internal successors, (158), 99 states have internal predecessors, (158), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:31:32,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:31:32,549 INFO L93 Difference]: Finished difference Result 199 states and 294 transitions. [2023-03-31 01:31:32,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:31:32,551 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 60 [2023-03-31 01:31:32,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:31:32,558 INFO L225 Difference]: With dead ends: 199 [2023-03-31 01:31:32,558 INFO L226 Difference]: Without dead ends: 119 [2023-03-31 01:31:32,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:31:32,569 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 257 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:31:32,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 48 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:31:32,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-03-31 01:31:32,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 114. [2023-03-31 01:31:32,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 94 states have (on average 1.6063829787234043) internal successors, (151), 95 states have internal predecessors, (151), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-03-31 01:31:32,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 170 transitions. [2023-03-31 01:31:32,623 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 170 transitions. Word has length 60 [2023-03-31 01:31:32,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:31:32,623 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 170 transitions. [2023-03-31 01:31:32,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:31:32,624 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 170 transitions. [2023-03-31 01:31:32,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-03-31 01:31:32,629 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:31:32,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:31:32,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:31:32,629 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:31:32,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:31:32,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1095437634, now seen corresponding path program 1 times [2023-03-31 01:31:32,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:31:32,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640387617] [2023-03-31 01:31:32,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:32,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:31:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:32,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:31:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:32,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:31:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:32,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-03-31 01:31:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:32,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-03-31 01:31:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:32,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-03-31 01:31:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:32,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-03-31 01:31:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:32,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-03-31 01:31:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:32,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-03-31 01:31:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:32,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:31:32,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:31:32,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640387617] [2023-03-31 01:31:32,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640387617] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:31:32,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:31:32,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-03-31 01:31:32,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190346532] [2023-03-31 01:31:32,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:31:32,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-31 01:31:32,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:31:32,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-31 01:31:32,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-03-31 01:31:32,997 INFO L87 Difference]: Start difference. First operand 114 states and 170 transitions. Second operand has 13 states, 12 states have (on average 3.5) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-03-31 01:31:34,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:31:34,069 INFO L93 Difference]: Finished difference Result 197 states and 286 transitions. [2023-03-31 01:31:34,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 01:31:34,070 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.5) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 60 [2023-03-31 01:31:34,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:31:34,074 INFO L225 Difference]: With dead ends: 197 [2023-03-31 01:31:34,075 INFO L226 Difference]: Without dead ends: 119 [2023-03-31 01:31:34,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2023-03-31 01:31:34,080 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 530 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:31:34,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 132 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 01:31:34,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-03-31 01:31:34,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 114. [2023-03-31 01:31:34,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 94 states have (on average 1.351063829787234) internal successors, (127), 95 states have internal predecessors, (127), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-03-31 01:31:34,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 146 transitions. [2023-03-31 01:31:34,116 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 146 transitions. Word has length 60 [2023-03-31 01:31:34,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:31:34,117 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 146 transitions. [2023-03-31 01:31:34,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.5) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-03-31 01:31:34,117 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 146 transitions. [2023-03-31 01:31:34,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-03-31 01:31:34,122 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:31:34,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:31:34,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:31:34,123 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:31:34,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:31:34,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1920947521, now seen corresponding path program 1 times [2023-03-31 01:31:34,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:31:34,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271649913] [2023-03-31 01:31:34,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:34,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:31:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:34,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:31:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:34,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:31:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:34,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-03-31 01:31:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:34,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:31:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:34,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-03-31 01:31:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:34,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-03-31 01:31:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:34,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-03-31 01:31:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:34,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-03-31 01:31:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:34,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:31:34,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:31:34,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271649913] [2023-03-31 01:31:34,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271649913] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:31:34,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:31:34,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-03-31 01:31:34,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268933726] [2023-03-31 01:31:34,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:31:34,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-03-31 01:31:34,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:31:34,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-03-31 01:31:34,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-03-31 01:31:34,664 INFO L87 Difference]: Start difference. First operand 114 states and 146 transitions. Second operand has 16 states, 16 states have (on average 4.0625) internal successors, (65), 11 states have internal predecessors, (65), 3 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:31:38,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:31:38,270 INFO L93 Difference]: Finished difference Result 832 states and 1178 transitions. [2023-03-31 01:31:38,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-03-31 01:31:38,270 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 11 states have internal predecessors, (65), 3 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 83 [2023-03-31 01:31:38,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:31:38,275 INFO L225 Difference]: With dead ends: 832 [2023-03-31 01:31:38,275 INFO L226 Difference]: Without dead ends: 760 [2023-03-31 01:31:38,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1816 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1191, Invalid=4661, Unknown=0, NotChecked=0, Total=5852 [2023-03-31 01:31:38,278 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 3754 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3764 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:31:38,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3764 Valid, 103 Invalid, 1782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 01:31:38,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2023-03-31 01:31:38,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 699. [2023-03-31 01:31:38,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 572 states have (on average 1.4947552447552448) internal successors, (855), 584 states have internal predecessors, (855), 58 states have call successors, (58), 58 states have call predecessors, (58), 68 states have return successors, (97), 57 states have call predecessors, (97), 57 states have call successors, (97) [2023-03-31 01:31:38,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1010 transitions. [2023-03-31 01:31:38,349 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1010 transitions. Word has length 83 [2023-03-31 01:31:38,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:31:38,349 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 1010 transitions. [2023-03-31 01:31:38,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 11 states have internal predecessors, (65), 3 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:31:38,349 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1010 transitions. [2023-03-31 01:31:38,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-03-31 01:31:38,351 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:31:38,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:31:38,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:31:38,351 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:31:38,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:31:38,352 INFO L85 PathProgramCache]: Analyzing trace with hash -421452676, now seen corresponding path program 1 times [2023-03-31 01:31:38,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:31:38,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858255789] [2023-03-31 01:31:38,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:38,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:31:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:38,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:31:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:38,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:31:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:38,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-03-31 01:31:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:38,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:31:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:38,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-03-31 01:31:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:38,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-03-31 01:31:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:38,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-03-31 01:31:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:38,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-03-31 01:31:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:38,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:31:38,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:31:38,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858255789] [2023-03-31 01:31:38,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858255789] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:31:38,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:31:38,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-03-31 01:31:38,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633384203] [2023-03-31 01:31:38,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:31:38,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-03-31 01:31:38,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:31:38,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-03-31 01:31:38,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2023-03-31 01:31:38,763 INFO L87 Difference]: Start difference. First operand 699 states and 1010 transitions. Second operand has 17 states, 15 states have (on average 4.4) internal successors, (66), 9 states have internal predecessors, (66), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:31:40,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:31:40,068 INFO L93 Difference]: Finished difference Result 840 states and 1209 transitions. [2023-03-31 01:31:40,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-03-31 01:31:40,068 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 4.4) internal successors, (66), 9 states have internal predecessors, (66), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2023-03-31 01:31:40,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:31:40,072 INFO L225 Difference]: With dead ends: 840 [2023-03-31 01:31:40,072 INFO L226 Difference]: Without dead ends: 838 [2023-03-31 01:31:40,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2023-03-31 01:31:40,074 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 383 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:31:40,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 272 Invalid, 1765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1736 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-31 01:31:40,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2023-03-31 01:31:40,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 744. [2023-03-31 01:31:40,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 602 states have (on average 1.4700996677740863) internal successors, (885), 619 states have internal predecessors, (885), 63 states have call successors, (63), 63 states have call predecessors, (63), 78 states have return successors, (107), 62 states have call predecessors, (107), 62 states have call successors, (107) [2023-03-31 01:31:40,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1055 transitions. [2023-03-31 01:31:40,140 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1055 transitions. Word has length 84 [2023-03-31 01:31:40,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:31:40,140 INFO L495 AbstractCegarLoop]: Abstraction has 744 states and 1055 transitions. [2023-03-31 01:31:40,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 4.4) internal successors, (66), 9 states have internal predecessors, (66), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:31:40,140 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1055 transitions. [2023-03-31 01:31:40,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-03-31 01:31:40,141 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:31:40,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:31:40,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:31:40,142 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:31:40,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:31:40,142 INFO L85 PathProgramCache]: Analyzing trace with hash 398232631, now seen corresponding path program 1 times [2023-03-31 01:31:40,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:31:40,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137104767] [2023-03-31 01:31:40,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:40,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:31:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:40,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:31:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:40,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:31:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:40,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-03-31 01:31:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:40,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:31:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:40,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-03-31 01:31:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:40,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-03-31 01:31:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:40,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-03-31 01:31:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:40,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-03-31 01:31:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:40,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:31:40,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:31:40,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137104767] [2023-03-31 01:31:40,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137104767] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:31:40,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:31:40,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:31:40,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103826823] [2023-03-31 01:31:40,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:31:40,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:31:40,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:31:40,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:31:40,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:31:40,394 INFO L87 Difference]: Start difference. First operand 744 states and 1055 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:31:41,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:31:41,707 INFO L93 Difference]: Finished difference Result 2630 states and 3780 transitions. [2023-03-31 01:31:41,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-31 01:31:41,708 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 85 [2023-03-31 01:31:41,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:31:41,716 INFO L225 Difference]: With dead ends: 2630 [2023-03-31 01:31:41,716 INFO L226 Difference]: Without dead ends: 1928 [2023-03-31 01:31:41,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2023-03-31 01:31:41,723 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 578 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:31:41,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 88 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-31 01:31:41,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2023-03-31 01:31:41,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1790. [2023-03-31 01:31:41,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1790 states, 1435 states have (on average 1.4745644599303136) internal successors, (2116), 1475 states have internal predecessors, (2116), 158 states have call successors, (158), 158 states have call predecessors, (158), 196 states have return successors, (306), 157 states have call predecessors, (306), 157 states have call successors, (306) [2023-03-31 01:31:41,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1790 states to 1790 states and 2580 transitions. [2023-03-31 01:31:41,870 INFO L78 Accepts]: Start accepts. Automaton has 1790 states and 2580 transitions. Word has length 85 [2023-03-31 01:31:41,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:31:41,871 INFO L495 AbstractCegarLoop]: Abstraction has 1790 states and 2580 transitions. [2023-03-31 01:31:41,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:31:41,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1790 states and 2580 transitions. [2023-03-31 01:31:41,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-03-31 01:31:41,872 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:31:41,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:31:41,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:31:41,873 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:31:41,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:31:41,873 INFO L85 PathProgramCache]: Analyzing trace with hash 196311503, now seen corresponding path program 1 times [2023-03-31 01:31:41,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:31:41,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999098917] [2023-03-31 01:31:41,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:41,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:31:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:42,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:31:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:42,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:31:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:42,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-03-31 01:31:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:42,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:31:42,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:42,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-03-31 01:31:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:42,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-03-31 01:31:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:42,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-03-31 01:31:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:42,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-03-31 01:31:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:42,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:31:42,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:31:42,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999098917] [2023-03-31 01:31:42,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999098917] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:31:42,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:31:42,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-03-31 01:31:42,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604892079] [2023-03-31 01:31:42,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:31:42,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-03-31 01:31:42,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:31:42,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-03-31 01:31:42,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-03-31 01:31:42,156 INFO L87 Difference]: Start difference. First operand 1790 states and 2580 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 9 states have internal predecessors, (68), 5 states have call successors, (10), 8 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-03-31 01:31:43,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:31:43,642 INFO L93 Difference]: Finished difference Result 4018 states and 5703 transitions. [2023-03-31 01:31:43,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-31 01:31:43,643 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 9 states have internal predecessors, (68), 5 states have call successors, (10), 8 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 86 [2023-03-31 01:31:43,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:31:43,650 INFO L225 Difference]: With dead ends: 4018 [2023-03-31 01:31:43,651 INFO L226 Difference]: Without dead ends: 2270 [2023-03-31 01:31:43,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=244, Invalid=686, Unknown=0, NotChecked=0, Total=930 [2023-03-31 01:31:43,656 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 1430 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:31:43,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 56 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:31:43,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2023-03-31 01:31:43,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 2004. [2023-03-31 01:31:43,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2004 states, 1604 states have (on average 1.476932668329177) internal successors, (2369), 1657 states have internal predecessors, (2369), 174 states have call successors, (174), 174 states have call predecessors, (174), 225 states have return successors, (342), 172 states have call predecessors, (342), 173 states have call successors, (342) [2023-03-31 01:31:43,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2004 states to 2004 states and 2885 transitions. [2023-03-31 01:31:43,816 INFO L78 Accepts]: Start accepts. Automaton has 2004 states and 2885 transitions. Word has length 86 [2023-03-31 01:31:43,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:31:43,817 INFO L495 AbstractCegarLoop]: Abstraction has 2004 states and 2885 transitions. [2023-03-31 01:31:43,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 9 states have internal predecessors, (68), 5 states have call successors, (10), 8 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-03-31 01:31:43,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2004 states and 2885 transitions. [2023-03-31 01:31:43,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-03-31 01:31:43,819 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:31:43,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:31:43,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:31:43,819 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:31:43,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:31:43,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1708019428, now seen corresponding path program 1 times [2023-03-31 01:31:43,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:31:43,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434702837] [2023-03-31 01:31:43,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:43,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:31:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:43,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:31:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:43,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:31:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:44,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-03-31 01:31:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:44,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:31:44,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:44,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-03-31 01:31:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:44,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-03-31 01:31:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:44,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-03-31 01:31:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:44,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-03-31 01:31:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:44,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:31:44,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:31:44,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434702837] [2023-03-31 01:31:44,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434702837] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:31:44,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:31:44,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-03-31 01:31:44,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453510195] [2023-03-31 01:31:44,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:31:44,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-03-31 01:31:44,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:31:44,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-03-31 01:31:44,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-03-31 01:31:44,103 INFO L87 Difference]: Start difference. First operand 2004 states and 2885 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 9 states have internal predecessors, (68), 5 states have call successors, (10), 8 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-03-31 01:31:45,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:31:45,722 INFO L93 Difference]: Finished difference Result 4515 states and 6395 transitions. [2023-03-31 01:31:45,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-31 01:31:45,722 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 9 states have internal predecessors, (68), 5 states have call successors, (10), 8 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 86 [2023-03-31 01:31:45,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:31:45,732 INFO L225 Difference]: With dead ends: 4515 [2023-03-31 01:31:45,732 INFO L226 Difference]: Without dead ends: 2669 [2023-03-31 01:31:45,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=244, Invalid=686, Unknown=0, NotChecked=0, Total=930 [2023-03-31 01:31:45,737 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 1116 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:31:45,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 57 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 01:31:45,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2669 states. [2023-03-31 01:31:45,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2669 to 2171. [2023-03-31 01:31:45,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2171 states, 1738 states have (on average 1.4792865362485617) internal successors, (2571), 1804 states have internal predecessors, (2571), 184 states have call successors, (184), 184 states have call predecessors, (184), 248 states have return successors, (370), 182 states have call predecessors, (370), 183 states have call successors, (370) [2023-03-31 01:31:45,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2171 states to 2171 states and 3125 transitions. [2023-03-31 01:31:45,927 INFO L78 Accepts]: Start accepts. Automaton has 2171 states and 3125 transitions. Word has length 86 [2023-03-31 01:31:45,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:31:45,928 INFO L495 AbstractCegarLoop]: Abstraction has 2171 states and 3125 transitions. [2023-03-31 01:31:45,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 9 states have internal predecessors, (68), 5 states have call successors, (10), 8 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-03-31 01:31:45,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2171 states and 3125 transitions. [2023-03-31 01:31:45,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-03-31 01:31:45,929 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:31:45,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:31:45,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:31:45,929 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:31:45,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:31:45,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1837798186, now seen corresponding path program 1 times [2023-03-31 01:31:45,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:31:45,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542993488] [2023-03-31 01:31:45,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:45,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:31:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:46,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:31:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:46,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:31:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:46,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-03-31 01:31:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:46,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:31:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:46,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-03-31 01:31:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:46,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-03-31 01:31:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:46,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-03-31 01:31:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:46,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-03-31 01:31:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:46,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:31:46,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:31:46,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542993488] [2023-03-31 01:31:46,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542993488] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:31:46,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:31:46,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-03-31 01:31:46,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454540377] [2023-03-31 01:31:46,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:31:46,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-03-31 01:31:46,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:31:46,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-03-31 01:31:46,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-03-31 01:31:46,165 INFO L87 Difference]: Start difference. First operand 2171 states and 3125 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 9 states have internal predecessors, (68), 5 states have call successors, (10), 8 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-03-31 01:31:47,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:31:47,669 INFO L93 Difference]: Finished difference Result 5467 states and 7801 transitions. [2023-03-31 01:31:47,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-31 01:31:47,670 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 9 states have internal predecessors, (68), 5 states have call successors, (10), 8 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 86 [2023-03-31 01:31:47,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:31:47,680 INFO L225 Difference]: With dead ends: 5467 [2023-03-31 01:31:47,681 INFO L226 Difference]: Without dead ends: 3389 [2023-03-31 01:31:47,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=244, Invalid=686, Unknown=0, NotChecked=0, Total=930 [2023-03-31 01:31:47,686 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 1102 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:31:47,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 60 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 01:31:47,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3389 states. [2023-03-31 01:31:47,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3389 to 2240. [2023-03-31 01:31:47,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2240 states, 1794 states have (on average 1.4832775919732442) internal successors, (2661), 1865 states have internal predecessors, (2661), 188 states have call successors, (188), 188 states have call predecessors, (188), 257 states have return successors, (384), 186 states have call predecessors, (384), 187 states have call successors, (384) [2023-03-31 01:31:47,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 3233 transitions. [2023-03-31 01:31:47,879 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 3233 transitions. Word has length 86 [2023-03-31 01:31:47,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:31:47,879 INFO L495 AbstractCegarLoop]: Abstraction has 2240 states and 3233 transitions. [2023-03-31 01:31:47,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 9 states have internal predecessors, (68), 5 states have call successors, (10), 8 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-03-31 01:31:47,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 3233 transitions. [2023-03-31 01:31:47,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-03-31 01:31:47,881 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:31:47,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:31:47,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 01:31:47,881 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:31:47,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:31:47,881 INFO L85 PathProgramCache]: Analyzing trace with hash -2003172227, now seen corresponding path program 1 times [2023-03-31 01:31:47,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:31:47,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031027466] [2023-03-31 01:31:47,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:47,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:31:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:48,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:31:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:48,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:31:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:48,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-03-31 01:31:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:48,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:31:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:48,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-03-31 01:31:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:48,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-03-31 01:31:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:48,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-03-31 01:31:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:48,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-03-31 01:31:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:48,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:31:48,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:31:48,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031027466] [2023-03-31 01:31:48,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031027466] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:31:48,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:31:48,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:31:48,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070108411] [2023-03-31 01:31:48,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:31:48,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:31:48,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:31:48,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:31:48,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:31:48,144 INFO L87 Difference]: Start difference. First operand 2240 states and 3233 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-03-31 01:31:49,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:31:49,191 INFO L93 Difference]: Finished difference Result 4744 states and 6793 transitions. [2023-03-31 01:31:49,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-03-31 01:31:49,192 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 87 [2023-03-31 01:31:49,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:31:49,201 INFO L225 Difference]: With dead ends: 4744 [2023-03-31 01:31:49,201 INFO L226 Difference]: Without dead ends: 3174 [2023-03-31 01:31:49,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2023-03-31 01:31:49,206 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 660 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:31:49,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 80 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 01:31:49,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3174 states. [2023-03-31 01:31:49,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3174 to 2604. [2023-03-31 01:31:49,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2604 states, 2074 states have (on average 1.4643201542912248) internal successors, (3037), 2129 states have internal predecessors, (3037), 238 states have call successors, (238), 238 states have call predecessors, (238), 291 states have return successors, (444), 236 states have call predecessors, (444), 237 states have call successors, (444) [2023-03-31 01:31:49,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2604 states to 2604 states and 3719 transitions. [2023-03-31 01:31:49,429 INFO L78 Accepts]: Start accepts. Automaton has 2604 states and 3719 transitions. Word has length 87 [2023-03-31 01:31:49,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:31:49,429 INFO L495 AbstractCegarLoop]: Abstraction has 2604 states and 3719 transitions. [2023-03-31 01:31:49,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-03-31 01:31:49,430 INFO L276 IsEmpty]: Start isEmpty. Operand 2604 states and 3719 transitions. [2023-03-31 01:31:49,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-03-31 01:31:49,432 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:31:49,432 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-03-31 01:31:49,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 01:31:49,432 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:31:49,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:31:49,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1911461648, now seen corresponding path program 1 times [2023-03-31 01:31:49,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:31:49,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650015154] [2023-03-31 01:31:49,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:49,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:31:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:49,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:31:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:49,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:31:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:49,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-03-31 01:31:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:49,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:31:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:49,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-03-31 01:31:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:49,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-03-31 01:31:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:49,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-03-31 01:31:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:49,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-03-31 01:31:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:49,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-03-31 01:31:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:49,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-03-31 01:31:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:49,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-03-31 01:31:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:49,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-03-31 01:31:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:49,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-03-31 01:31:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:49,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-31 01:31:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:49,878 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-03-31 01:31:49,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:31:49,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650015154] [2023-03-31 01:31:49,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650015154] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:31:49,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:31:49,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-03-31 01:31:49,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385866337] [2023-03-31 01:31:49,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:31:49,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-03-31 01:31:49,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:31:49,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-03-31 01:31:49,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-03-31 01:31:49,881 INFO L87 Difference]: Start difference. First operand 2604 states and 3719 transitions. Second operand has 16 states, 16 states have (on average 5.0) internal successors, (80), 11 states have internal predecessors, (80), 4 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-03-31 01:31:55,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:31:55,632 INFO L93 Difference]: Finished difference Result 6780 states and 9627 transitions. [2023-03-31 01:31:55,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2023-03-31 01:31:55,633 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.0) internal successors, (80), 11 states have internal predecessors, (80), 4 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 129 [2023-03-31 01:31:55,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:31:55,645 INFO L225 Difference]: With dead ends: 6780 [2023-03-31 01:31:55,646 INFO L226 Difference]: Without dead ends: 4562 [2023-03-31 01:31:55,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4758 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1965, Invalid=10917, Unknown=0, NotChecked=0, Total=12882 [2023-03-31 01:31:55,653 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 3258 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 2716 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3274 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 3067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 2716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:31:55,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3274 Valid, 206 Invalid, 3067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 2716 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-03-31 01:31:55,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4562 states. [2023-03-31 01:31:55,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4562 to 4189. [2023-03-31 01:31:55,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4189 states, 3343 states have (on average 1.4696380496559975) internal successors, (4913), 3414 states have internal predecessors, (4913), 388 states have call successors, (388), 388 states have call predecessors, (388), 457 states have return successors, (708), 386 states have call predecessors, (708), 387 states have call successors, (708) [2023-03-31 01:31:55,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 6009 transitions. [2023-03-31 01:31:55,965 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 6009 transitions. Word has length 129 [2023-03-31 01:31:55,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:31:55,966 INFO L495 AbstractCegarLoop]: Abstraction has 4189 states and 6009 transitions. [2023-03-31 01:31:55,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0) internal successors, (80), 11 states have internal predecessors, (80), 4 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-03-31 01:31:55,966 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 6009 transitions. [2023-03-31 01:31:55,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-03-31 01:31:55,967 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:31:55,968 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-03-31 01:31:55,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-03-31 01:31:55,968 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:31:55,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:31:55,968 INFO L85 PathProgramCache]: Analyzing trace with hash 7130717, now seen corresponding path program 1 times [2023-03-31 01:31:55,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:31:55,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447866095] [2023-03-31 01:31:55,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:55,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:31:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:56,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:31:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:56,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:31:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:56,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-03-31 01:31:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:56,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:31:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:56,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-03-31 01:31:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:56,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-03-31 01:31:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:56,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-03-31 01:31:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:56,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-03-31 01:31:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:56,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-03-31 01:31:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:56,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-03-31 01:31:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:56,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-03-31 01:31:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:56,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-03-31 01:31:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:56,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-03-31 01:31:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:56,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-31 01:31:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:56,424 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-03-31 01:31:56,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:31:56,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447866095] [2023-03-31 01:31:56,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447866095] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:31:56,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:31:56,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-03-31 01:31:56,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213107436] [2023-03-31 01:31:56,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:31:56,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-03-31 01:31:56,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:31:56,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-03-31 01:31:56,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-03-31 01:31:56,427 INFO L87 Difference]: Start difference. First operand 4189 states and 6009 transitions. Second operand has 16 states, 16 states have (on average 5.0625) internal successors, (81), 11 states have internal predecessors, (81), 4 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-03-31 01:32:02,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:32:02,142 INFO L93 Difference]: Finished difference Result 11054 states and 15769 transitions. [2023-03-31 01:32:02,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-03-31 01:32:02,143 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 11 states have internal predecessors, (81), 4 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 129 [2023-03-31 01:32:02,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:32:02,178 INFO L225 Difference]: With dead ends: 11054 [2023-03-31 01:32:02,178 INFO L226 Difference]: Without dead ends: 7582 [2023-03-31 01:32:02,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4272 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1839, Invalid=9933, Unknown=0, NotChecked=0, Total=11772 [2023-03-31 01:32:02,189 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 2833 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 2864 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2849 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 3161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 2864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:32:02,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2849 Valid, 209 Invalid, 3161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 2864 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-03-31 01:32:02,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7582 states. [2023-03-31 01:32:02,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7582 to 6658. [2023-03-31 01:32:02,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6658 states, 5328 states have (on average 1.4780405405405406) internal successors, (7875), 5437 states have internal predecessors, (7875), 611 states have call successors, (611), 611 states have call predecessors, (611), 718 states have return successors, (1105), 609 states have call predecessors, (1105), 610 states have call successors, (1105) [2023-03-31 01:32:02,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6658 states to 6658 states and 9591 transitions. [2023-03-31 01:32:02,780 INFO L78 Accepts]: Start accepts. Automaton has 6658 states and 9591 transitions. Word has length 129 [2023-03-31 01:32:02,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:32:02,780 INFO L495 AbstractCegarLoop]: Abstraction has 6658 states and 9591 transitions. [2023-03-31 01:32:02,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 11 states have internal predecessors, (81), 4 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-03-31 01:32:02,781 INFO L276 IsEmpty]: Start isEmpty. Operand 6658 states and 9591 transitions. [2023-03-31 01:32:02,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-03-31 01:32:02,782 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:32:02,783 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-03-31 01:32:02,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-03-31 01:32:02,783 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:32:02,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:32:02,783 INFO L85 PathProgramCache]: Analyzing trace with hash -122648041, now seen corresponding path program 1 times [2023-03-31 01:32:02,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:32:02,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104628470] [2023-03-31 01:32:02,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:32:02,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:32:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:03,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:32:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:03,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:32:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:03,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-03-31 01:32:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:03,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:32:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:03,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-03-31 01:32:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:03,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-03-31 01:32:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:03,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-03-31 01:32:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:03,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-03-31 01:32:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:03,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-03-31 01:32:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:03,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-03-31 01:32:03,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:03,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-03-31 01:32:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:03,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-03-31 01:32:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:03,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-03-31 01:32:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:03,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-31 01:32:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:03,205 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-03-31 01:32:03,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:32:03,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104628470] [2023-03-31 01:32:03,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104628470] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:32:03,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:32:03,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-03-31 01:32:03,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76704394] [2023-03-31 01:32:03,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:32:03,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-03-31 01:32:03,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:32:03,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-03-31 01:32:03,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-03-31 01:32:03,207 INFO L87 Difference]: Start difference. First operand 6658 states and 9591 transitions. Second operand has 16 states, 16 states have (on average 5.0625) internal successors, (81), 11 states have internal predecessors, (81), 4 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-03-31 01:32:09,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:32:09,606 INFO L93 Difference]: Finished difference Result 16126 states and 23177 transitions. [2023-03-31 01:32:09,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2023-03-31 01:32:09,617 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 11 states have internal predecessors, (81), 4 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 129 [2023-03-31 01:32:09,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:32:09,647 INFO L225 Difference]: With dead ends: 16126 [2023-03-31 01:32:09,647 INFO L226 Difference]: Without dead ends: 11259 [2023-03-31 01:32:09,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4434 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1895, Invalid=10315, Unknown=0, NotChecked=0, Total=12210 [2023-03-31 01:32:09,660 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 2206 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 3990 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2220 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 4186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 3990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:32:09,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2220 Valid, 258 Invalid, 4186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 3990 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-03-31 01:32:09,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11259 states. [2023-03-31 01:32:10,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11259 to 9355. [2023-03-31 01:32:10,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9355 states, 7505 states have (on average 1.4870086608927382) internal successors, (11160), 7674 states have internal predecessors, (11160), 841 states have call successors, (841), 841 states have call predecessors, (841), 1008 states have return successors, (1527), 839 states have call predecessors, (1527), 840 states have call successors, (1527) [2023-03-31 01:32:10,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9355 states to 9355 states and 13528 transitions. [2023-03-31 01:32:10,449 INFO L78 Accepts]: Start accepts. Automaton has 9355 states and 13528 transitions. Word has length 129 [2023-03-31 01:32:10,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:32:10,450 INFO L495 AbstractCegarLoop]: Abstraction has 9355 states and 13528 transitions. [2023-03-31 01:32:10,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 11 states have internal predecessors, (81), 4 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-03-31 01:32:10,450 INFO L276 IsEmpty]: Start isEmpty. Operand 9355 states and 13528 transitions. [2023-03-31 01:32:10,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-03-31 01:32:10,452 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:32:10,452 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-03-31 01:32:10,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-03-31 01:32:10,453 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:32:10,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:32:10,453 INFO L85 PathProgramCache]: Analyzing trace with hash -373125284, now seen corresponding path program 1 times [2023-03-31 01:32:10,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:32:10,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212552113] [2023-03-31 01:32:10,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:32:10,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:32:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:10,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:32:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:10,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:32:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:10,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-03-31 01:32:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:10,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:32:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:10,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-03-31 01:32:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:10,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-03-31 01:32:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:10,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-03-31 01:32:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:10,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-03-31 01:32:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:10,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-03-31 01:32:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:10,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-03-31 01:32:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:10,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-03-31 01:32:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:10,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-03-31 01:32:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:10,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-03-31 01:32:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:10,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-03-31 01:32:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:10,726 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-03-31 01:32:10,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:32:10,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212552113] [2023-03-31 01:32:10,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212552113] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:32:10,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591055974] [2023-03-31 01:32:10,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:32:10,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:32:10,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:32:10,729 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) [2023-03-31 01:32:10,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 01:32:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:10,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 14 conjunts are in the unsatisfiable core [2023-03-31 01:32:10,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:32:11,125 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 30 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:32:11,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 01:32:11,354 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-03-31 01:32:11,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591055974] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 01:32:11,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 01:32:11,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 20 [2023-03-31 01:32:11,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717669511] [2023-03-31 01:32:11,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 01:32:11,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-03-31 01:32:11,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:32:11,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-03-31 01:32:11,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2023-03-31 01:32:11,356 INFO L87 Difference]: Start difference. First operand 9355 states and 13528 transitions. Second operand has 20 states, 19 states have (on average 8.368421052631579) internal successors, (159), 14 states have internal predecessors, (159), 7 states have call successors, (37), 13 states have call predecessors, (37), 10 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2023-03-31 01:32:14,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:32:14,976 INFO L93 Difference]: Finished difference Result 23611 states and 33824 transitions. [2023-03-31 01:32:14,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-03-31 01:32:14,976 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 8.368421052631579) internal successors, (159), 14 states have internal predecessors, (159), 7 states have call successors, (37), 13 states have call predecessors, (37), 10 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) Word has length 130 [2023-03-31 01:32:14,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:32:15,011 INFO L225 Difference]: With dead ends: 23611 [2023-03-31 01:32:15,011 INFO L226 Difference]: Without dead ends: 14329 [2023-03-31 01:32:15,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=583, Invalid=2069, Unknown=0, NotChecked=0, Total=2652 [2023-03-31 01:32:15,027 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1683 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 1416 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:32:15,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1689 Valid, 116 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1416 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:32:15,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14329 states. [2023-03-31 01:32:16,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14329 to 12649. [2023-03-31 01:32:16,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12649 states, 10013 states have (on average 1.4514131628882452) internal successors, (14533), 10278 states have internal predecessors, (14533), 1186 states have call successors, (1186), 1186 states have call predecessors, (1186), 1449 states have return successors, (2156), 1184 states have call predecessors, (2156), 1185 states have call successors, (2156) [2023-03-31 01:32:16,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12649 states to 12649 states and 17875 transitions. [2023-03-31 01:32:16,160 INFO L78 Accepts]: Start accepts. Automaton has 12649 states and 17875 transitions. Word has length 130 [2023-03-31 01:32:16,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:32:16,160 INFO L495 AbstractCegarLoop]: Abstraction has 12649 states and 17875 transitions. [2023-03-31 01:32:16,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 8.368421052631579) internal successors, (159), 14 states have internal predecessors, (159), 7 states have call successors, (37), 13 states have call predecessors, (37), 10 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2023-03-31 01:32:16,160 INFO L276 IsEmpty]: Start isEmpty. Operand 12649 states and 17875 transitions. [2023-03-31 01:32:16,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-03-31 01:32:16,162 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:32:16,163 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-03-31 01:32:16,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-03-31 01:32:16,370 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,SelfDestructingSolverStorable12 [2023-03-31 01:32:16,371 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:32:16,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:32:16,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1137493147, now seen corresponding path program 1 times [2023-03-31 01:32:16,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:32:16,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440773805] [2023-03-31 01:32:16,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:32:16,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:32:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:16,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:32:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:16,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:32:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:16,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-03-31 01:32:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:16,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:32:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:16,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-03-31 01:32:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:16,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-03-31 01:32:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:16,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-03-31 01:32:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:16,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-03-31 01:32:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:16,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-03-31 01:32:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:16,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-03-31 01:32:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:16,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-03-31 01:32:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:16,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-03-31 01:32:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:16,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-03-31 01:32:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:16,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-03-31 01:32:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:16,603 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-03-31 01:32:16,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:32:16,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440773805] [2023-03-31 01:32:16,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440773805] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:32:16,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970806485] [2023-03-31 01:32:16,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:32:16,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:32:16,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:32:16,605 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) [2023-03-31 01:32:16,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 01:32:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:16,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 14 conjunts are in the unsatisfiable core [2023-03-31 01:32:16,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:32:16,909 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 23 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:32:16,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 01:32:17,139 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-03-31 01:32:17,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970806485] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 01:32:17,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 01:32:17,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 20 [2023-03-31 01:32:17,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629056872] [2023-03-31 01:32:17,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 01:32:17,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-03-31 01:32:17,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:32:17,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-03-31 01:32:17,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2023-03-31 01:32:17,142 INFO L87 Difference]: Start difference. First operand 12649 states and 17875 transitions. Second operand has 20 states, 19 states have (on average 8.526315789473685) internal successors, (162), 14 states have internal predecessors, (162), 7 states have call successors, (37), 14 states have call predecessors, (37), 10 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2023-03-31 01:32:21,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:32:21,435 INFO L93 Difference]: Finished difference Result 37269 states and 52516 transitions. [2023-03-31 01:32:21,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-03-31 01:32:21,437 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 8.526315789473685) internal successors, (162), 14 states have internal predecessors, (162), 7 states have call successors, (37), 14 states have call predecessors, (37), 10 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) Word has length 130 [2023-03-31 01:32:21,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:32:21,496 INFO L225 Difference]: With dead ends: 37269 [2023-03-31 01:32:21,496 INFO L226 Difference]: Without dead ends: 24776 [2023-03-31 01:32:21,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=580, Invalid=2072, Unknown=0, NotChecked=0, Total=2652 [2023-03-31 01:32:21,518 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 1738 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 1642 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1745 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:32:21,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1745 Valid, 111 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1642 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:32:21,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24776 states. [2023-03-31 01:32:23,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24776 to 22554. [2023-03-31 01:32:23,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22554 states, 17506 states have (on average 1.4113446818233748) internal successors, (24707), 17953 states have internal predecessors, (24707), 2301 states have call successors, (2301), 2301 states have call predecessors, (2301), 2746 states have return successors, (4371), 2299 states have call predecessors, (4371), 2300 states have call successors, (4371) [2023-03-31 01:32:23,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22554 states to 22554 states and 31379 transitions. [2023-03-31 01:32:23,686 INFO L78 Accepts]: Start accepts. Automaton has 22554 states and 31379 transitions. Word has length 130 [2023-03-31 01:32:23,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:32:23,687 INFO L495 AbstractCegarLoop]: Abstraction has 22554 states and 31379 transitions. [2023-03-31 01:32:23,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 8.526315789473685) internal successors, (162), 14 states have internal predecessors, (162), 7 states have call successors, (37), 14 states have call predecessors, (37), 10 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2023-03-31 01:32:23,687 INFO L276 IsEmpty]: Start isEmpty. Operand 22554 states and 31379 transitions. [2023-03-31 01:32:23,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-03-31 01:32:23,690 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:32:23,690 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-03-31 01:32:23,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-03-31 01:32:23,897 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,SelfDestructingSolverStorable13 [2023-03-31 01:32:23,897 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:32:23,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:32:23,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1370331076, now seen corresponding path program 1 times [2023-03-31 01:32:23,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:32:23,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723984863] [2023-03-31 01:32:23,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:32:23,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:32:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:24,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:32:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:24,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:32:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:24,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-03-31 01:32:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:24,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:32:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:24,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-03-31 01:32:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:24,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-03-31 01:32:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:24,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-03-31 01:32:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:24,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-03-31 01:32:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:24,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-03-31 01:32:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:24,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-03-31 01:32:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:24,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-03-31 01:32:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:24,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-03-31 01:32:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:24,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-03-31 01:32:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:24,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-03-31 01:32:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:24,128 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-03-31 01:32:24,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:32:24,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723984863] [2023-03-31 01:32:24,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723984863] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:32:24,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533472976] [2023-03-31 01:32:24,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:32:24,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:32:24,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:32:24,130 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) [2023-03-31 01:32:24,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 01:32:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:24,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-31 01:32:24,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:32:24,337 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-03-31 01:32:24,337 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 01:32:24,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533472976] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:32:24,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 01:32:24,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2023-03-31 01:32:24,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406946766] [2023-03-31 01:32:24,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:32:24,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 01:32:24,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:32:24,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 01:32:24,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-03-31 01:32:24,339 INFO L87 Difference]: Start difference. First operand 22554 states and 31379 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13)