/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/eca-rers2012/Problem18_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 23:44:41,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 23:44:41,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 23:44:41,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 23:44:41,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 23:44:42,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 23:44:42,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 23:44:42,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 23:44:42,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 23:44:42,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 23:44:42,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 23:44:42,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 23:44:42,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 23:44:42,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 23:44:42,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 23:44:42,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 23:44:42,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 23:44:42,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 23:44:42,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 23:44:42,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 23:44:42,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 23:44:42,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 23:44:42,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 23:44:42,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 23:44:42,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 23:44:42,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 23:44:42,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 23:44:42,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 23:44:42,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 23:44:42,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 23:44:42,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 23:44:42,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 23:44:42,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 23:44:42,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 23:44:42,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 23:44:42,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 23:44:42,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 23:44:42,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 23:44:42,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 23:44:42,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 23:44:42,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 23:44:42,050 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 [2023-04-01 23:44:42,077 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 23:44:42,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 23:44:42,078 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 23:44:42,078 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 23:44:42,079 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 23:44:42,079 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 23:44:42,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 23:44:42,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 23:44:42,080 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 23:44:42,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 23:44:42,081 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 23:44:42,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 23:44:42,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 23:44:42,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 23:44:42,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 23:44:42,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 23:44:42,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 23:44:42,082 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 23:44:42,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 23:44:42,082 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 23:44:42,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 23:44:42,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 23:44:42,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 23:44:42,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 23:44:42,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:44:42,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 23:44:42,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 23:44:42,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 23:44:42,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 23:44:42,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 23:44:42,083 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 23:44:42,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 23:44:42,084 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 23:44:42,084 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 23:44:42,084 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 23:44:42,084 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 23:44:42,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 23:44:42,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 23:44:42,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 23:44:42,335 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 23:44:42,335 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 23:44:42,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem18_label37.c [2023-04-01 23:44:43,545 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 23:44:43,973 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 23:44:43,974 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label37.c [2023-04-01 23:44:43,997 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9f8f4f21/0555a4e2cd6545a4b29cad7bc67b60b2/FLAG9cadd7d44 [2023-04-01 23:44:44,011 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9f8f4f21/0555a4e2cd6545a4b29cad7bc67b60b2 [2023-04-01 23:44:44,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 23:44:44,015 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 23:44:44,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 23:44:44,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 23:44:44,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 23:44:44,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:44:44" (1/1) ... [2023-04-01 23:44:44,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@625691cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:44:44, skipping insertion in model container [2023-04-01 23:44:44,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:44:44" (1/1) ... [2023-04-01 23:44:44,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 23:44:44,130 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 23:44:44,364 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/eca-rers2012/Problem18_label37.c[5877,5890] [2023-04-01 23:44:44,827 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:44:44,837 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 23:44:44,870 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/eca-rers2012/Problem18_label37.c[5877,5890] [2023-04-01 23:44:45,224 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:44:45,244 INFO L208 MainTranslator]: Completed translation [2023-04-01 23:44:45,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:44:45 WrapperNode [2023-04-01 23:44:45,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 23:44:45,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 23:44:45,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 23:44:45,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 23:44:45,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:44:45" (1/1) ... [2023-04-01 23:44:45,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:44:45" (1/1) ... [2023-04-01 23:44:45,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:44:45" (1/1) ... [2023-04-01 23:44:45,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:44:45" (1/1) ... [2023-04-01 23:44:45,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:44:45" (1/1) ... [2023-04-01 23:44:45,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:44:45" (1/1) ... [2023-04-01 23:44:45,447 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:44:45" (1/1) ... [2023-04-01 23:44:45,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:44:45" (1/1) ... [2023-04-01 23:44:45,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 23:44:45,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 23:44:45,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 23:44:45,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 23:44:45,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:44:45" (1/1) ... [2023-04-01 23:44:45,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:44:45,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:45,506 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) [2023-04-01 23:44:45,517 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 [2023-04-01 23:44:45,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 23:44:45,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 23:44:45,551 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 23:44:45,551 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 23:44:45,551 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 23:44:45,551 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 23:44:45,552 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 23:44:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 23:44:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 23:44:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 23:44:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 23:44:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 23:44:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 23:44:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 23:44:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 23:44:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 23:44:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 23:44:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 23:44:45,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 23:44:45,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 23:44:45,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 23:44:45,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 23:44:45,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 23:44:45,640 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 23:44:45,641 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 23:44:48,459 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 23:44:48,471 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 23:44:48,471 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 23:44:48,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:44:48 BoogieIcfgContainer [2023-04-01 23:44:48,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 23:44:48,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 23:44:48,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 23:44:48,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 23:44:48,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:44:44" (1/3) ... [2023-04-01 23:44:48,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec097c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:44:48, skipping insertion in model container [2023-04-01 23:44:48,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:44:45" (2/3) ... [2023-04-01 23:44:48,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec097c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:44:48, skipping insertion in model container [2023-04-01 23:44:48,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:44:48" (3/3) ... [2023-04-01 23:44:48,481 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label37.c [2023-04-01 23:44:48,497 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 23:44:48,498 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 23:44:48,557 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 23:44:48,564 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;@49fb2a58, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 23:44:48,564 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 23:44:48,571 INFO L276 IsEmpty]: Start isEmpty. Operand has 774 states, 762 states have (on average 1.9041994750656168) internal successors, (1451), 763 states have internal predecessors, (1451), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 23:44:48,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-01 23:44:48,581 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:48,581 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] [2023-04-01 23:44:48,582 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:48,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:48,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1046520667, now seen corresponding path program 1 times [2023-04-01 23:44:48,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:48,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805686431] [2023-04-01 23:44:48,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:48,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:49,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:49,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:44:49,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:49,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805686431] [2023-04-01 23:44:49,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805686431] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:44:49,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:44:49,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 23:44:49,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022777983] [2023-04-01 23:44:49,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:44:49,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 23:44:49,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:49,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 23:44:49,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 23:44:49,263 INFO L87 Difference]: Start difference. First operand has 774 states, 762 states have (on average 1.9041994750656168) internal successors, (1451), 763 states have internal predecessors, (1451), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:44:53,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:53,902 INFO L93 Difference]: Finished difference Result 2286 states and 4364 transitions. [2023-04-01 23:44:53,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 23:44:53,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2023-04-01 23:44:53,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:53,936 INFO L225 Difference]: With dead ends: 2286 [2023-04-01 23:44:53,936 INFO L226 Difference]: Without dead ends: 1432 [2023-04-01 23:44:53,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:44:53,951 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2223 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3226 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2223 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 3957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 3226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:53,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2223 Valid, 38 Invalid, 3957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [731 Valid, 3226 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-04-01 23:44:53,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2023-04-01 23:44:54,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1428. [2023-04-01 23:44:54,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1406 states have (on average 1.5896159317211949) internal successors, (2235), 1408 states have internal predecessors, (2235), 8 states have call successors, (8), 8 states have call predecessors, (8), 13 states have return successors, (19), 11 states have call predecessors, (19), 7 states have call successors, (19) [2023-04-01 23:44:54,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 2262 transitions. [2023-04-01 23:44:54,079 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 2262 transitions. Word has length 62 [2023-04-01 23:44:54,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:54,081 INFO L495 AbstractCegarLoop]: Abstraction has 1428 states and 2262 transitions. [2023-04-01 23:44:54,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:44:54,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 2262 transitions. [2023-04-01 23:44:54,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-04-01 23:44:54,091 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:54,091 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, 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] [2023-04-01 23:44:54,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 23:44:54,092 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:54,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:54,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1389841675, now seen corresponding path program 1 times [2023-04-01 23:44:54,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:54,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534998423] [2023-04-01 23:44:54,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:54,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:54,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:54,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:54,500 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:44:54,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:54,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534998423] [2023-04-01 23:44:54,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534998423] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:44:54,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:44:54,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 23:44:54,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845767950] [2023-04-01 23:44:54,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:44:54,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 23:44:54,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:54,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 23:44:54,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:44:54,504 INFO L87 Difference]: Start difference. First operand 1428 states and 2262 transitions. Second operand has 8 states, 7 states have (on average 17.857142857142858) internal successors, (125), 5 states have internal predecessors, (125), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:45:01,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:45:01,556 INFO L93 Difference]: Finished difference Result 5784 states and 9263 transitions. [2023-04-01 23:45:01,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 23:45:01,557 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.857142857142858) internal successors, (125), 5 states have internal predecessors, (125), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 131 [2023-04-01 23:45:01,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:45:01,577 INFO L225 Difference]: With dead ends: 5784 [2023-04-01 23:45:01,577 INFO L226 Difference]: Without dead ends: 4362 [2023-04-01 23:45:01,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:45:01,582 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 3831 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 7436 mSolverCounterSat, 1572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3831 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 9008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1572 IncrementalHoareTripleChecker+Valid, 7436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:45:01,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3831 Valid, 120 Invalid, 9008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1572 Valid, 7436 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-04-01 23:45:01,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4362 states. [2023-04-01 23:45:01,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4362 to 4345. [2023-04-01 23:45:01,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4345 states, 4258 states have (on average 1.3586190699859089) internal successors, (5785), 4274 states have internal predecessors, (5785), 20 states have call successors, (20), 20 states have call predecessors, (20), 66 states have return successors, (175), 50 states have call predecessors, (175), 19 states have call successors, (175) [2023-04-01 23:45:01,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4345 states to 4345 states and 5980 transitions. [2023-04-01 23:45:01,693 INFO L78 Accepts]: Start accepts. Automaton has 4345 states and 5980 transitions. Word has length 131 [2023-04-01 23:45:01,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:45:01,694 INFO L495 AbstractCegarLoop]: Abstraction has 4345 states and 5980 transitions. [2023-04-01 23:45:01,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.857142857142858) internal successors, (125), 5 states have internal predecessors, (125), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:45:01,694 INFO L276 IsEmpty]: Start isEmpty. Operand 4345 states and 5980 transitions. [2023-04-01 23:45:01,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-04-01 23:45:01,697 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:45:01,697 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:45:01,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 23:45:01,697 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:45:01,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:45:01,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1145341134, now seen corresponding path program 1 times [2023-04-01 23:45:01,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:45:01,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107810196] [2023-04-01 23:45:01,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:01,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:45:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:02,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:45:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:02,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:45:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:02,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:45:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:02,175 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 23:45:02,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:45:02,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107810196] [2023-04-01 23:45:02,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107810196] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:45:02,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350732727] [2023-04-01 23:45:02,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:02,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:02,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:45:02,185 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) [2023-04-01 23:45:02,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 23:45:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:02,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:45:02,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:45:02,496 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:45:02,496 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:45:02,818 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:45:02,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350732727] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:45:02,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:45:02,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:45:02,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483745784] [2023-04-01 23:45:02,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:45:02,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:45:02,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:45:02,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:45:02,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:45:02,827 INFO L87 Difference]: Start difference. First operand 4345 states and 5980 transitions. Second operand has 11 states, 11 states have (on average 35.54545454545455) internal successors, (391), 9 states have internal predecessors, (391), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:45:10,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:45:10,273 INFO L93 Difference]: Finished difference Result 14716 states and 20304 transitions. [2023-04-01 23:45:10,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 23:45:10,274 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 35.54545454545455) internal successors, (391), 9 states have internal predecessors, (391), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 257 [2023-04-01 23:45:10,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:45:10,311 INFO L225 Difference]: With dead ends: 14716 [2023-04-01 23:45:10,312 INFO L226 Difference]: Without dead ends: 8832 [2023-04-01 23:45:10,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 518 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 23:45:10,326 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 3754 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 12137 mSolverCounterSat, 1946 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 14083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1946 IncrementalHoareTripleChecker+Valid, 12137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:45:10,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3757 Valid, 211 Invalid, 14083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1946 Valid, 12137 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-04-01 23:45:10,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8832 states. [2023-04-01 23:45:10,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8832 to 7297. [2023-04-01 23:45:10,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7297 states, 7129 states have (on average 1.1161453219245336) internal successors, (7957), 7172 states have internal predecessors, (7957), 32 states have call successors, (32), 32 states have call predecessors, (32), 135 states have return successors, (343), 92 states have call predecessors, (343), 31 states have call successors, (343) [2023-04-01 23:45:10,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7297 states to 7297 states and 8332 transitions. [2023-04-01 23:45:10,563 INFO L78 Accepts]: Start accepts. Automaton has 7297 states and 8332 transitions. Word has length 257 [2023-04-01 23:45:10,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:45:10,565 INFO L495 AbstractCegarLoop]: Abstraction has 7297 states and 8332 transitions. [2023-04-01 23:45:10,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 35.54545454545455) internal successors, (391), 9 states have internal predecessors, (391), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:45:10,565 INFO L276 IsEmpty]: Start isEmpty. Operand 7297 states and 8332 transitions. [2023-04-01 23:45:10,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-04-01 23:45:10,571 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:45:10,571 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:45:10,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 23:45:10,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:10,777 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:45:10,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:45:10,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1821472825, now seen corresponding path program 1 times [2023-04-01 23:45:10,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:45:10,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823460117] [2023-04-01 23:45:10,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:10,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:45:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:11,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:45:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:11,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:45:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:11,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:45:11,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:11,150 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-04-01 23:45:11,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:45:11,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823460117] [2023-04-01 23:45:11,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823460117] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:45:11,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522315624] [2023-04-01 23:45:11,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:11,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:11,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:45:11,155 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) [2023-04-01 23:45:11,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 23:45:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:11,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:45:11,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:45:11,353 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-04-01 23:45:11,354 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:45:11,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522315624] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:45:11,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:45:11,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:45:11,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158047110] [2023-04-01 23:45:11,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:45:11,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:45:11,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:45:11,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:45:11,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:45:11,360 INFO L87 Difference]: Start difference. First operand 7297 states and 8332 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:45:13,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:45:13,127 INFO L93 Difference]: Finished difference Result 14588 states and 16658 transitions. [2023-04-01 23:45:13,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:45:13,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 290 [2023-04-01 23:45:13,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:45:13,156 INFO L225 Difference]: With dead ends: 14588 [2023-04-01 23:45:13,157 INFO L226 Difference]: Without dead ends: 7297 [2023-04-01 23:45:13,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:45:13,171 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 713 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 1891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:45:13,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 944 Invalid, 1891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 1621 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-01 23:45:13,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7297 states. [2023-04-01 23:45:13,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7297 to 7289. [2023-04-01 23:45:13,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7289 states, 7124 states have (on average 1.0765019651880965) internal successors, (7669), 7166 states have internal predecessors, (7669), 32 states have call successors, (32), 32 states have call predecessors, (32), 132 states have return successors, (244), 90 states have call predecessors, (244), 31 states have call successors, (244) [2023-04-01 23:45:13,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7289 states to 7289 states and 7945 transitions. [2023-04-01 23:45:13,332 INFO L78 Accepts]: Start accepts. Automaton has 7289 states and 7945 transitions. Word has length 290 [2023-04-01 23:45:13,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:45:13,334 INFO L495 AbstractCegarLoop]: Abstraction has 7289 states and 7945 transitions. [2023-04-01 23:45:13,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:45:13,335 INFO L276 IsEmpty]: Start isEmpty. Operand 7289 states and 7945 transitions. [2023-04-01 23:45:13,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-04-01 23:45:13,339 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:45:13,340 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:45:13,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 23:45:13,552 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,SelfDestructingSolverStorable3 [2023-04-01 23:45:13,552 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:45:13,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:45:13,552 INFO L85 PathProgramCache]: Analyzing trace with hash 2140154071, now seen corresponding path program 1 times [2023-04-01 23:45:13,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:45:13,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823346406] [2023-04-01 23:45:13,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:13,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:45:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:13,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:45:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:13,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:45:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:13,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:45:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:13,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:45:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:13,909 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 168 proven. 3 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-04-01 23:45:13,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:45:13,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823346406] [2023-04-01 23:45:13,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823346406] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:45:13,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562644935] [2023-04-01 23:45:13,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:13,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:13,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:45:13,913 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) [2023-04-01 23:45:13,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 23:45:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:14,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:45:14,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:45:14,134 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-04-01 23:45:14,135 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:45:14,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562644935] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:45:14,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:45:14,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:45:14,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050310241] [2023-04-01 23:45:14,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:45:14,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:45:14,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:45:14,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:45:14,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:45:14,137 INFO L87 Difference]: Start difference. First operand 7289 states and 7945 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:45:16,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:45:16,010 INFO L93 Difference]: Finished difference Result 18850 states and 20880 transitions. [2023-04-01 23:45:16,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:45:16,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 359 [2023-04-01 23:45:16,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:45:16,048 INFO L225 Difference]: With dead ends: 18850 [2023-04-01 23:45:16,048 INFO L226 Difference]: Without dead ends: 11567 [2023-04-01 23:45:16,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:45:16,066 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 663 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 2003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:45:16,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 282 Invalid, 2003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-01 23:45:16,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11567 states. [2023-04-01 23:45:16,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11567 to 10865. [2023-04-01 23:45:16,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10865 states, 10644 states have (on average 1.0697106350995866) internal successors, (11386), 10698 states have internal predecessors, (11386), 47 states have call successors, (47), 47 states have call predecessors, (47), 173 states have return successors, (445), 119 states have call predecessors, (445), 46 states have call successors, (445) [2023-04-01 23:45:16,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10865 states to 10865 states and 11878 transitions. [2023-04-01 23:45:16,261 INFO L78 Accepts]: Start accepts. Automaton has 10865 states and 11878 transitions. Word has length 359 [2023-04-01 23:45:16,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:45:16,262 INFO L495 AbstractCegarLoop]: Abstraction has 10865 states and 11878 transitions. [2023-04-01 23:45:16,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:45:16,263 INFO L276 IsEmpty]: Start isEmpty. Operand 10865 states and 11878 transitions. [2023-04-01 23:45:16,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2023-04-01 23:45:16,268 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:45:16,268 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:45:16,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-01 23:45:16,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:16,474 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:45:16,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:45:16,475 INFO L85 PathProgramCache]: Analyzing trace with hash -2052215716, now seen corresponding path program 1 times [2023-04-01 23:45:16,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:45:16,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675731606] [2023-04-01 23:45:16,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:16,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:45:16,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:16,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:45:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:16,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:45:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:17,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:45:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:17,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:45:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:17,093 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 168 proven. 3 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-04-01 23:45:17,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:45:17,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675731606] [2023-04-01 23:45:17,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675731606] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:45:17,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645385558] [2023-04-01 23:45:17,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:17,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:17,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:45:17,095 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:45:17,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 23:45:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:17,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:45:17,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:45:17,305 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-04-01 23:45:17,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:45:17,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645385558] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:45:17,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:45:17,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-04-01 23:45:17,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557281417] [2023-04-01 23:45:17,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:45:17,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:45:17,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:45:17,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:45:17,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:45:17,308 INFO L87 Difference]: Start difference. First operand 10865 states and 11878 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:45:19,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:45:19,149 INFO L93 Difference]: Finished difference Result 25997 states and 28758 transitions. [2023-04-01 23:45:19,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:45:19,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 378 [2023-04-01 23:45:19,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:45:19,202 INFO L225 Difference]: With dead ends: 25997 [2023-04-01 23:45:19,202 INFO L226 Difference]: Without dead ends: 15138 [2023-04-01 23:45:19,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:45:19,227 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 676 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:45:19,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 194 Invalid, 2025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 1705 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-01 23:45:19,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15138 states. [2023-04-01 23:45:19,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15138 to 13727. [2023-04-01 23:45:19,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13727 states, 13461 states have (on average 1.0728029121164846) internal successors, (14441), 13524 states have internal predecessors, (14441), 59 states have call successors, (59), 59 states have call predecessors, (59), 206 states have return successors, (651), 143 states have call predecessors, (651), 58 states have call successors, (651) [2023-04-01 23:45:19,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13727 states to 13727 states and 15151 transitions. [2023-04-01 23:45:19,520 INFO L78 Accepts]: Start accepts. Automaton has 13727 states and 15151 transitions. Word has length 378 [2023-04-01 23:45:19,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:45:19,521 INFO L495 AbstractCegarLoop]: Abstraction has 13727 states and 15151 transitions. [2023-04-01 23:45:19,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:45:19,521 INFO L276 IsEmpty]: Start isEmpty. Operand 13727 states and 15151 transitions. [2023-04-01 23:45:19,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2023-04-01 23:45:19,531 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:45:19,531 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:45:19,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 23:45:19,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:19,738 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:45:19,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:45:19,738 INFO L85 PathProgramCache]: Analyzing trace with hash 173932544, now seen corresponding path program 1 times [2023-04-01 23:45:19,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:45:19,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807688773] [2023-04-01 23:45:19,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:19,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:45:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:20,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:45:20,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:20,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:45:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:20,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:45:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:20,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:45:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:20,398 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 168 proven. 3 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 23:45:20,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:45:20,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807688773] [2023-04-01 23:45:20,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807688773] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:45:20,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357662274] [2023-04-01 23:45:20,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:20,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:20,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:45:20,400 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:45:20,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 23:45:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:20,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:45:20,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:45:20,630 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 23:45:20,630 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:45:20,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357662274] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:45:20,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:45:20,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-04-01 23:45:20,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578721253] [2023-04-01 23:45:20,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:45:20,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:45:20,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:45:20,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:45:20,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:45:20,633 INFO L87 Difference]: Start difference. First operand 13727 states and 15151 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:45:22,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:45:22,397 INFO L93 Difference]: Finished difference Result 39532 states and 44396 transitions. [2023-04-01 23:45:22,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:45:22,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 440 [2023-04-01 23:45:22,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:45:22,496 INFO L225 Difference]: With dead ends: 39532 [2023-04-01 23:45:22,497 INFO L226 Difference]: Without dead ends: 25811 [2023-04-01 23:45:22,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:45:22,530 INFO L413 NwaCegarLoop]: 981 mSDtfsCounter, 650 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1778 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 2020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:45:22,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 1007 Invalid, 2020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 1778 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-01 23:45:22,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25811 states. [2023-04-01 23:45:23,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25811 to 24407. [2023-04-01 23:45:23,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24407 states, 23991 states have (on average 1.0591471801925723) internal successors, (25410), 24084 states have internal predecessors, (25410), 104 states have call successors, (104), 104 states have call predecessors, (104), 311 states have return successors, (1391), 218 states have call predecessors, (1391), 103 states have call successors, (1391) [2023-04-01 23:45:23,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24407 states to 24407 states and 26905 transitions. [2023-04-01 23:45:23,115 INFO L78 Accepts]: Start accepts. Automaton has 24407 states and 26905 transitions. Word has length 440 [2023-04-01 23:45:23,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:45:23,116 INFO L495 AbstractCegarLoop]: Abstraction has 24407 states and 26905 transitions. [2023-04-01 23:45:23,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:45:23,117 INFO L276 IsEmpty]: Start isEmpty. Operand 24407 states and 26905 transitions. [2023-04-01 23:45:23,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2023-04-01 23:45:23,128 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:45:23,129 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-01 23:45:23,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 23:45:23,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:23,335 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:45:23,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:45:23,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1593339538, now seen corresponding path program 1 times [2023-04-01 23:45:23,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:45:23,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970977992] [2023-04-01 23:45:23,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:23,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:45:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:23,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:45:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:23,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:45:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:23,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:45:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:23,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:45:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:23,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-04-01 23:45:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:23,952 INFO L134 CoverageAnalysis]: Checked inductivity of 747 backedges. 501 proven. 11 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-04-01 23:45:23,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:45:23,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970977992] [2023-04-01 23:45:23,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970977992] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:45:23,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265179355] [2023-04-01 23:45:23,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:23,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:23,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:45:23,955 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:45:23,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 23:45:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:24,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 749 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:45:24,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:45:24,360 INFO L134 CoverageAnalysis]: Checked inductivity of 747 backedges. 507 proven. 2 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-04-01 23:45:24,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:45:24,694 INFO L134 CoverageAnalysis]: Checked inductivity of 747 backedges. 507 proven. 2 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-04-01 23:45:24,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265179355] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:45:24,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:45:24,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 13 [2023-04-01 23:45:24,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977750280] [2023-04-01 23:45:24,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:45:24,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 23:45:24,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:45:24,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 23:45:24,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:45:24,697 INFO L87 Difference]: Start difference. First operand 24407 states and 26905 transitions. Second operand has 13 states, 13 states have (on average 38.61538461538461) internal successors, (502), 11 states have internal predecessors, (502), 5 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 23:45:28,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:45:28,011 INFO L93 Difference]: Finished difference Result 52496 states and 58062 transitions. [2023-04-01 23:45:28,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:45:28,012 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 38.61538461538461) internal successors, (502), 11 states have internal predecessors, (502), 5 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 467 [2023-04-01 23:45:28,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:45:28,094 INFO L225 Difference]: With dead ends: 52496 [2023-04-01 23:45:28,095 INFO L226 Difference]: Without dead ends: 28095 [2023-04-01 23:45:28,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 964 GetRequests, 944 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-04-01 23:45:28,125 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 8384 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 4030 mSolverCounterSat, 1251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8384 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 5281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1251 IncrementalHoareTripleChecker+Valid, 4030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:45:28,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8384 Valid, 118 Invalid, 5281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1251 Valid, 4030 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-01 23:45:28,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28095 states. [2023-04-01 23:45:28,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28095 to 28069. [2023-04-01 23:45:28,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28069 states, 27562 states have (on average 1.047456643204412) internal successors, (28870), 27686 states have internal predecessors, (28870), 119 states have call successors, (119), 119 states have call predecessors, (119), 387 states have return successors, (1459), 263 states have call predecessors, (1459), 118 states have call successors, (1459) [2023-04-01 23:45:28,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28069 states to 28069 states and 30448 transitions. [2023-04-01 23:45:28,580 INFO L78 Accepts]: Start accepts. Automaton has 28069 states and 30448 transitions. Word has length 467 [2023-04-01 23:45:28,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:45:28,581 INFO L495 AbstractCegarLoop]: Abstraction has 28069 states and 30448 transitions. [2023-04-01 23:45:28,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 38.61538461538461) internal successors, (502), 11 states have internal predecessors, (502), 5 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 23:45:28,582 INFO L276 IsEmpty]: Start isEmpty. Operand 28069 states and 30448 transitions. [2023-04-01 23:45:28,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2023-04-01 23:45:28,589 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:45:28,589 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:45:28,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 23:45:28,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:28,796 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:45:28,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:45:28,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1353436064, now seen corresponding path program 1 times [2023-04-01 23:45:28,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:45:28,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760207199] [2023-04-01 23:45:28,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:28,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:45:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:29,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:45:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:29,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:45:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:29,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:45:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:29,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-04-01 23:45:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:29,436 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 288 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-04-01 23:45:29,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:45:29,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760207199] [2023-04-01 23:45:29,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760207199] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:45:29,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824246292] [2023-04-01 23:45:29,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:29,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:29,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:45:29,438 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:45:29,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 23:45:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:29,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:45:29,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:45:29,885 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 417 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-04-01 23:45:29,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:45:30,475 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 289 proven. 94 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-04-01 23:45:30,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824246292] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:45:30,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:45:30,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 23:45:30,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296482879] [2023-04-01 23:45:30,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:45:30,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:45:30,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:45:30,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:45:30,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:45:30,478 INFO L87 Difference]: Start difference. First operand 28069 states and 30448 transitions. Second operand has 12 states, 12 states have (on average 70.58333333333333) internal successors, (847), 10 states have internal predecessors, (847), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 23:45:37,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:45:37,415 INFO L93 Difference]: Finished difference Result 90393 states and 100867 transitions. [2023-04-01 23:45:37,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 23:45:37,416 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 70.58333333333333) internal successors, (847), 10 states have internal predecessors, (847), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 488 [2023-04-01 23:45:37,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:45:37,595 INFO L225 Difference]: With dead ends: 90393 [2023-04-01 23:45:37,595 INFO L226 Difference]: Without dead ends: 62330 [2023-04-01 23:45:37,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1016 GetRequests, 991 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2023-04-01 23:45:37,641 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 4302 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 9579 mSolverCounterSat, 1473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4302 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 11052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1473 IncrementalHoareTripleChecker+Valid, 9579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:45:37,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4302 Valid, 220 Invalid, 11052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1473 Valid, 9579 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-04-01 23:45:37,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62330 states. [2023-04-01 23:45:38,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62330 to 58108. [2023-04-01 23:45:38,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58108 states, 57119 states have (on average 1.0491605245189868) internal successors, (59927), 57378 states have internal predecessors, (59927), 245 states have call successors, (245), 245 states have call predecessors, (245), 743 states have return successors, (4373), 484 states have call predecessors, (4373), 244 states have call successors, (4373) [2023-04-01 23:45:38,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58108 states to 58108 states and 64545 transitions. [2023-04-01 23:45:38,725 INFO L78 Accepts]: Start accepts. Automaton has 58108 states and 64545 transitions. Word has length 488 [2023-04-01 23:45:38,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:45:38,726 INFO L495 AbstractCegarLoop]: Abstraction has 58108 states and 64545 transitions. [2023-04-01 23:45:38,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 70.58333333333333) internal successors, (847), 10 states have internal predecessors, (847), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 23:45:38,726 INFO L276 IsEmpty]: Start isEmpty. Operand 58108 states and 64545 transitions. [2023-04-01 23:45:38,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2023-04-01 23:45:38,733 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:45:38,734 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:45:38,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 23:45:38,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:38,940 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:45:38,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:45:38,940 INFO L85 PathProgramCache]: Analyzing trace with hash 898144929, now seen corresponding path program 1 times [2023-04-01 23:45:38,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:45:38,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430920457] [2023-04-01 23:45:38,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:38,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:45:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:39,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:45:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:39,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:45:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:39,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:39,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-04-01 23:45:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:39,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2023-04-01 23:45:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:39,967 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 165 proven. 12 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-04-01 23:45:39,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:45:39,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430920457] [2023-04-01 23:45:39,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430920457] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:45:39,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850326756] [2023-04-01 23:45:39,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:39,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:39,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:45:39,969 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:45:39,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 23:45:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:40,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:45:40,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:45:40,233 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-04-01 23:45:40,234 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:45:40,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850326756] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:45:40,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:45:40,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2023-04-01 23:45:40,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492930021] [2023-04-01 23:45:40,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:45:40,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:45:40,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:45:40,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:45:40,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:45:40,236 INFO L87 Difference]: Start difference. First operand 58108 states and 64545 transitions. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:45:42,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:45:42,127 INFO L93 Difference]: Finished difference Result 116210 states and 129084 transitions. [2023-04-01 23:45:42,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:45:42,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 567 [2023-04-01 23:45:42,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:45:42,300 INFO L225 Difference]: With dead ends: 116210 [2023-04-01 23:45:42,300 INFO L226 Difference]: Without dead ends: 58108 [2023-04-01 23:45:42,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 577 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:45:42,370 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 751 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1696 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:45:42,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 791 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1696 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 23:45:42,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58108 states. [2023-04-01 23:45:43,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58108 to 58108. [2023-04-01 23:45:43,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58108 states, 57119 states have (on average 1.0432780685936378) internal successors, (59591), 57378 states have internal predecessors, (59591), 245 states have call successors, (245), 245 states have call predecessors, (245), 743 states have return successors, (3883), 484 states have call predecessors, (3883), 244 states have call successors, (3883) [2023-04-01 23:45:43,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58108 states to 58108 states and 63719 transitions. [2023-04-01 23:45:43,489 INFO L78 Accepts]: Start accepts. Automaton has 58108 states and 63719 transitions. Word has length 567 [2023-04-01 23:45:43,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:45:43,490 INFO L495 AbstractCegarLoop]: Abstraction has 58108 states and 63719 transitions. [2023-04-01 23:45:43,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:45:43,491 INFO L276 IsEmpty]: Start isEmpty. Operand 58108 states and 63719 transitions. [2023-04-01 23:45:43,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2023-04-01 23:45:43,503 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:45:43,503 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:45:43,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-01 23:45:43,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-04-01 23:45:43,712 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:45:43,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:45:43,713 INFO L85 PathProgramCache]: Analyzing trace with hash -748977507, now seen corresponding path program 1 times [2023-04-01 23:45:43,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:45:43,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636900819] [2023-04-01 23:45:43,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:43,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:45:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:44,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:45:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:44,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:45:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:44,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:44,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-04-01 23:45:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:44,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2023-04-01 23:45:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:44,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2023-04-01 23:45:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:44,466 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 476 proven. 2 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-04-01 23:45:44,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:45:44,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636900819] [2023-04-01 23:45:44,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636900819] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:45:44,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792696781] [2023-04-01 23:45:44,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:44,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:44,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:45:44,468 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:45:44,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 23:45:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:44,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:45:44,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:45:44,792 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 479 proven. 2 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-04-01 23:45:44,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:45:45,132 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 479 proven. 2 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-04-01 23:45:45,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792696781] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:45:45,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:45:45,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:45:45,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209026321] [2023-04-01 23:45:45,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:45:45,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:45:45,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:45:45,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:45:45,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:45:45,135 INFO L87 Difference]: Start difference. First operand 58108 states and 63719 transitions. Second operand has 11 states, 11 states have (on average 58.36363636363637) internal successors, (642), 9 states have internal predecessors, (642), 4 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 23:45:52,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:45:52,027 INFO L93 Difference]: Finished difference Result 121284 states and 133106 transitions. [2023-04-01 23:45:52,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 23:45:52,027 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 58.36363636363637) internal successors, (642), 9 states have internal predecessors, (642), 4 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 624 [2023-04-01 23:45:52,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:45:52,195 INFO L225 Difference]: With dead ends: 121284 [2023-04-01 23:45:52,195 INFO L226 Difference]: Without dead ends: 61044 [2023-04-01 23:45:52,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1292 GetRequests, 1267 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2023-04-01 23:45:52,272 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 3631 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 12940 mSolverCounterSat, 719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3635 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 13659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 719 IncrementalHoareTripleChecker+Valid, 12940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:45:52,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3635 Valid, 234 Invalid, 13659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [719 Valid, 12940 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-04-01 23:45:52,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61044 states. [2023-04-01 23:45:53,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61044 to 54635. [2023-04-01 23:45:53,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54635 states, 53659 states have (on average 1.0294079278406232) internal successors, (55237), 53932 states have internal predecessors, (55237), 230 states have call successors, (230), 230 states have call predecessors, (230), 745 states have return successors, (2642), 472 states have call predecessors, (2642), 229 states have call successors, (2642) [2023-04-01 23:45:53,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54635 states to 54635 states and 58109 transitions. [2023-04-01 23:45:53,700 INFO L78 Accepts]: Start accepts. Automaton has 54635 states and 58109 transitions. Word has length 624 [2023-04-01 23:45:53,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:45:53,701 INFO L495 AbstractCegarLoop]: Abstraction has 54635 states and 58109 transitions. [2023-04-01 23:45:53,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 58.36363636363637) internal successors, (642), 9 states have internal predecessors, (642), 4 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 23:45:53,701 INFO L276 IsEmpty]: Start isEmpty. Operand 54635 states and 58109 transitions. [2023-04-01 23:45:53,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-04-01 23:45:53,714 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:45:53,714 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:45:53,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 23:45:53,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:53,921 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:45:53,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:45:53,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1059820895, now seen corresponding path program 1 times [2023-04-01 23:45:53,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:45:53,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446666956] [2023-04-01 23:45:53,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:53,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:45:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:54,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:45:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:54,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:45:54,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:54,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:45:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:54,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:54,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2023-04-01 23:45:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:54,728 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 352 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-04-01 23:45:54,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:45:54,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446666956] [2023-04-01 23:45:54,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446666956] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:45:54,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990190625] [2023-04-01 23:45:54,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:54,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:54,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:45:54,730 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:45:54,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 23:45:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:54,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:45:54,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:45:55,077 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 354 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-04-01 23:45:55,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:45:55,348 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 354 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-04-01 23:45:55,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990190625] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:45:55,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:45:55,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 23:45:55,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617456837] [2023-04-01 23:45:55,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:45:55,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:45:55,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:45:55,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:45:55,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:45:55,352 INFO L87 Difference]: Start difference. First operand 54635 states and 58109 transitions. Second operand has 12 states, 12 states have (on average 60.833333333333336) internal successors, (730), 10 states have internal predecessors, (730), 5 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-01 23:46:01,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:46:01,042 INFO L93 Difference]: Finished difference Result 115738 states and 122983 transitions. [2023-04-01 23:46:01,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 23:46:01,043 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 60.833333333333336) internal successors, (730), 10 states have internal predecessors, (730), 5 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 665 [2023-04-01 23:46:01,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:46:01,157 INFO L225 Difference]: With dead ends: 115738 [2023-04-01 23:46:01,157 INFO L226 Difference]: Without dead ends: 59693 [2023-04-01 23:46:01,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1373 GetRequests, 1348 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2023-04-01 23:46:01,209 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 6370 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 6635 mSolverCounterSat, 1134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6370 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 7769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1134 IncrementalHoareTripleChecker+Valid, 6635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:46:01,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6370 Valid, 193 Invalid, 7769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1134 Valid, 6635 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-04-01 23:46:01,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59693 states. [2023-04-01 23:46:02,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59693 to 57560. [2023-04-01 23:46:02,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57560 states, 56511 states have (on average 1.0218364566190654) internal successors, (57745), 56814 states have internal predecessors, (57745), 242 states have call successors, (242), 242 states have call predecessors, (242), 806 states have return successors, (2155), 503 states have call predecessors, (2155), 241 states have call successors, (2155) [2023-04-01 23:46:02,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57560 states to 57560 states and 60142 transitions. [2023-04-01 23:46:02,379 INFO L78 Accepts]: Start accepts. Automaton has 57560 states and 60142 transitions. Word has length 665 [2023-04-01 23:46:02,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:46:02,379 INFO L495 AbstractCegarLoop]: Abstraction has 57560 states and 60142 transitions. [2023-04-01 23:46:02,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 60.833333333333336) internal successors, (730), 10 states have internal predecessors, (730), 5 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-01 23:46:02,380 INFO L276 IsEmpty]: Start isEmpty. Operand 57560 states and 60142 transitions. [2023-04-01 23:46:02,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2023-04-01 23:46:02,391 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:46:02,392 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:46:02,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-01 23:46:02,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-01 23:46:02,606 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:46:02,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:46:02,607 INFO L85 PathProgramCache]: Analyzing trace with hash 644773449, now seen corresponding path program 1 times [2023-04-01 23:46:02,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:46:02,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621537609] [2023-04-01 23:46:02,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:46:02,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:46:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:03,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:46:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:03,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:46:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:03,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:46:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:03,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:46:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:03,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2023-04-01 23:46:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:03,545 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 168 proven. 3 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-04-01 23:46:03,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:46:03,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621537609] [2023-04-01 23:46:03,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621537609] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:46:03,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767694060] [2023-04-01 23:46:03,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:46:03,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:46:03,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:46:03,547 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:46:03,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-01 23:46:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:03,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-01 23:46:03,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:46:04,446 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2023-04-01 23:46:04,447 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:46:04,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767694060] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:46:04,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:46:04,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-04-01 23:46:04,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951907826] [2023-04-01 23:46:04,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:46:04,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:46:04,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:46:04,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:46:04,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:46:04,449 INFO L87 Difference]: Start difference. First operand 57560 states and 60142 transitions. Second operand has 5 states, 5 states have (on average 110.6) internal successors, (553), 4 states have internal predecessors, (553), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 23:46:07,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:46:07,324 INFO L93 Difference]: Finished difference Result 120114 states and 125414 transitions. [2023-04-01 23:46:07,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 23:46:07,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 110.6) internal successors, (553), 4 states have internal predecessors, (553), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 710 [2023-04-01 23:46:07,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:46:07,438 INFO L225 Difference]: With dead ends: 120114 [2023-04-01 23:46:07,438 INFO L226 Difference]: Without dead ends: 62560 [2023-04-01 23:46:07,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 718 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:46:07,471 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1873 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 3245 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 3379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 3245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:46:07,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1873 Valid, 104 Invalid, 3379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 3245 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-01 23:46:07,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62560 states. [2023-04-01 23:46:08,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62560 to 62522. [2023-04-01 23:46:08,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62522 states, 61411 states have (on average 1.0203872270440149) internal successors, (62663), 61726 states have internal predecessors, (62663), 263 states have call successors, (263), 263 states have call predecessors, (263), 847 states have return successors, (2221), 532 states have call predecessors, (2221), 262 states have call successors, (2221) [2023-04-01 23:46:08,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62522 states to 62522 states and 65147 transitions. [2023-04-01 23:46:08,373 INFO L78 Accepts]: Start accepts. Automaton has 62522 states and 65147 transitions. Word has length 710 [2023-04-01 23:46:08,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:46:08,374 INFO L495 AbstractCegarLoop]: Abstraction has 62522 states and 65147 transitions. [2023-04-01 23:46:08,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.6) internal successors, (553), 4 states have internal predecessors, (553), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 23:46:08,374 INFO L276 IsEmpty]: Start isEmpty. Operand 62522 states and 65147 transitions. [2023-04-01 23:46:08,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1552 [2023-04-01 23:46:08,456 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:46:08,457 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:46:08,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-01 23:46:08,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 23:46:08,666 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:46:08,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:46:08,666 INFO L85 PathProgramCache]: Analyzing trace with hash 540284591, now seen corresponding path program 1 times [2023-04-01 23:46:08,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:46:08,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261629392] [2023-04-01 23:46:08,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:46:08,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:46:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:09,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:46:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:09,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:46:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:10,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:46:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:10,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:46:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:10,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:46:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:10,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:46:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:10,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2023-04-01 23:46:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:10,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2023-04-01 23:46:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:10,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:46:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:10,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1403 [2023-04-01 23:46:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:10,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2077 backedges. 282 proven. 5 refuted. 0 times theorem prover too weak. 1790 trivial. 0 not checked. [2023-04-01 23:46:10,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:46:10,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261629392] [2023-04-01 23:46:10,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261629392] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:46:10,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362130868] [2023-04-01 23:46:10,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:46:10,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:46:10,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:46:10,421 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:46:10,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-01 23:46:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:10,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 1960 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 23:46:10,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:46:11,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2077 backedges. 1561 proven. 2 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2023-04-01 23:46:11,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:46:13,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2077 backedges. 539 proven. 217 refuted. 0 times theorem prover too weak. 1321 trivial. 0 not checked. [2023-04-01 23:46:13,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362130868] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:46:13,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:46:13,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-04-01 23:46:13,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363691665] [2023-04-01 23:46:13,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:46:13,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 23:46:13,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:46:13,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 23:46:13,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-01 23:46:13,802 INFO L87 Difference]: Start difference. First operand 62522 states and 65147 transitions. Second operand has 10 states, 10 states have (on average 126.7) internal successors, (1267), 8 states have internal predecessors, (1267), 5 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-01 23:46:20,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:46:20,810 INFO L93 Difference]: Finished difference Result 148379 states and 155416 transitions. [2023-04-01 23:46:20,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-04-01 23:46:20,811 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 126.7) internal successors, (1267), 8 states have internal predecessors, (1267), 5 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 1551 [2023-04-01 23:46:20,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:46:20,955 INFO L225 Difference]: With dead ends: 148379 [2023-04-01 23:46:20,955 INFO L226 Difference]: Without dead ends: 85869 [2023-04-01 23:46:20,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3170 GetRequests, 3139 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=242, Invalid=750, Unknown=0, NotChecked=0, Total=992 [2023-04-01 23:46:20,993 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 12407 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 6726 mSolverCounterSat, 1152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12407 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 7878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1152 IncrementalHoareTripleChecker+Valid, 6726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:46:20,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12407 Valid, 205 Invalid, 7878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1152 Valid, 6726 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-04-01 23:46:21,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85869 states. [2023-04-01 23:46:21,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85869 to 84396. [2023-04-01 23:46:21,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84396 states, 83053 states have (on average 1.0189999157164702) internal successors, (84631), 83394 states have internal predecessors, (84631), 356 states have call successors, (356), 356 states have call predecessors, (356), 986 states have return successors, (2875), 645 states have call predecessors, (2875), 355 states have call successors, (2875) [2023-04-01 23:46:22,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84396 states to 84396 states and 87862 transitions. [2023-04-01 23:46:22,074 INFO L78 Accepts]: Start accepts. Automaton has 84396 states and 87862 transitions. Word has length 1551 [2023-04-01 23:46:22,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:46:22,075 INFO L495 AbstractCegarLoop]: Abstraction has 84396 states and 87862 transitions. [2023-04-01 23:46:22,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 126.7) internal successors, (1267), 8 states have internal predecessors, (1267), 5 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-01 23:46:22,076 INFO L276 IsEmpty]: Start isEmpty. Operand 84396 states and 87862 transitions. [2023-04-01 23:46:22,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1961 [2023-04-01 23:46:22,177 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:46:22,178 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:46:22,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-04-01 23:46:22,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-01 23:46:22,387 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:46:22,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:46:22,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1653325086, now seen corresponding path program 1 times [2023-04-01 23:46:22,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:46:22,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984528570] [2023-04-01 23:46:22,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:46:22,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:46:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:25,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:46:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:25,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:46:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:25,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:46:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:25,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:46:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:25,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:46:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:25,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:46:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:25,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:46:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:25,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2023-04-01 23:46:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:25,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1166 [2023-04-01 23:46:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:26,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1272 [2023-04-01 23:46:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:26,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:46:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:26,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:46:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:26,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3047 backedges. 754 proven. 144 refuted. 0 times theorem prover too weak. 2149 trivial. 0 not checked. [2023-04-01 23:46:26,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:46:26,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984528570] [2023-04-01 23:46:26,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984528570] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:46:26,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673960674] [2023-04-01 23:46:26,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:46:26,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:46:26,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:46:26,348 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:46:26,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-04-01 23:46:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:26,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 2430 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 23:46:26,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:46:27,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3047 backedges. 2346 proven. 2 refuted. 0 times theorem prover too weak. 699 trivial. 0 not checked. [2023-04-01 23:46:27,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:46:27,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3047 backedges. 916 proven. 338 refuted. 0 times theorem prover too weak. 1793 trivial. 0 not checked. [2023-04-01 23:46:27,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673960674] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:46:27,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:46:27,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2023-04-01 23:46:27,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374679969] [2023-04-01 23:46:27,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:46:27,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 23:46:27,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:46:27,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 23:46:27,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-04-01 23:46:27,993 INFO L87 Difference]: Start difference. First operand 84396 states and 87862 transitions. Second operand has 15 states, 15 states have (on average 123.8) internal successors, (1857), 13 states have internal predecessors, (1857), 7 states have call successors, (19), 6 states have call predecessors, (19), 9 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-04-01 23:46:48,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:46:48,636 INFO L93 Difference]: Finished difference Result 199263 states and 207991 transitions. [2023-04-01 23:46:48,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-04-01 23:46:48,636 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 123.8) internal successors, (1857), 13 states have internal predecessors, (1857), 7 states have call successors, (19), 6 states have call predecessors, (19), 9 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) Word has length 1960 [2023-04-01 23:46:48,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:46:48,879 INFO L225 Difference]: With dead ends: 199263 [2023-04-01 23:46:48,879 INFO L226 Difference]: Without dead ends: 115583 [2023-04-01 23:46:48,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4117 GetRequests, 4019 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3536 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1251, Invalid=8451, Unknown=0, NotChecked=0, Total=9702 [2023-04-01 23:46:48,963 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 26096 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 28629 mSolverCounterSat, 2097 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26107 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 30726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2097 IncrementalHoareTripleChecker+Valid, 28629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:46:48,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26107 Valid, 876 Invalid, 30726 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2097 Valid, 28629 Invalid, 0 Unknown, 0 Unchecked, 17.4s Time] [2023-04-01 23:46:49,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115583 states. [2023-04-01 23:46:50,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115583 to 103568. [2023-04-01 23:46:50,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103568 states, 101974 states have (on average 1.0160040794712377) internal successors, (103606), 102364 states have internal predecessors, (103606), 437 states have call successors, (437), 437 states have call predecessors, (437), 1156 states have return successors, (3119), 766 states have call predecessors, (3119), 436 states have call successors, (3119) [2023-04-01 23:46:50,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103568 states to 103568 states and 107162 transitions. [2023-04-01 23:46:50,453 INFO L78 Accepts]: Start accepts. Automaton has 103568 states and 107162 transitions. Word has length 1960 [2023-04-01 23:46:50,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:46:50,454 INFO L495 AbstractCegarLoop]: Abstraction has 103568 states and 107162 transitions. [2023-04-01 23:46:50,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 123.8) internal successors, (1857), 13 states have internal predecessors, (1857), 7 states have call successors, (19), 6 states have call predecessors, (19), 9 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-04-01 23:46:50,454 INFO L276 IsEmpty]: Start isEmpty. Operand 103568 states and 107162 transitions. [2023-04-01 23:46:50,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2009 [2023-04-01 23:46:50,568 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:46:50,569 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:46:50,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-04-01 23:46:50,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-04-01 23:46:50,769 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:46:50,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:46:51,189 INFO L85 PathProgramCache]: Analyzing trace with hash -496234688, now seen corresponding path program 1 times [2023-04-01 23:46:51,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:46:51,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205682607] [2023-04-01 23:46:51,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:46:51,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:46:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:52,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:46:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:52,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:46:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:52,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:46:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:52,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:46:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:52,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:46:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:52,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:46:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:53,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:46:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:53,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:46:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:53,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1214 [2023-04-01 23:46:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:53,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1320 [2023-04-01 23:46:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:53,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:46:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:53,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:46:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:53,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2891 backedges. 967 proven. 479 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2023-04-01 23:46:53,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:46:53,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205682607] [2023-04-01 23:46:53,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205682607] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:46:53,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892082787] [2023-04-01 23:46:53,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:46:53,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:46:53,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:46:53,905 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:46:53,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-04-01 23:46:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:54,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 2461 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-01 23:46:54,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:46:54,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2891 backedges. 626 proven. 0 refuted. 0 times theorem prover too weak. 2265 trivial. 0 not checked. [2023-04-01 23:46:54,988 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:46:54,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892082787] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:46:54,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:46:54,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-04-01 23:46:54,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425902992] [2023-04-01 23:46:54,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:46:54,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:46:54,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:46:54,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:46:54,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-01 23:46:54,992 INFO L87 Difference]: Start difference. First operand 103568 states and 107162 transitions. Second operand has 5 states, 5 states have (on average 185.2) internal successors, (926), 5 states have internal predecessors, (926), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-01 23:46:58,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:46:58,286 INFO L93 Difference]: Finished difference Result 231178 states and 239786 transitions. [2023-04-01 23:46:58,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 23:46:58,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 185.2) internal successors, (926), 5 states have internal predecessors, (926), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 2008 [2023-04-01 23:46:58,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:46:58,288 INFO L225 Difference]: With dead ends: 231178 [2023-04-01 23:46:58,288 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 23:46:58,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2042 GetRequests, 2033 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:46:58,422 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1485 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 3022 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 3389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 3022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:46:58,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 76 Invalid, 3389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 3022 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-01 23:46:58,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 23:46:58,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 23:46:58,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 23:46:58,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 23:46:58,423 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2008 [2023-04-01 23:46:58,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:46:58,423 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 23:46:58,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 185.2) internal successors, (926), 5 states have internal predecessors, (926), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-01 23:46:58,424 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 23:46:58,424 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 23:46:58,426 INFO L805 garLoopResultBuilder]: Registering result SAFE for location calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 23:46:58,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-04-01 23:46:58,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:46:58,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-01 23:47:46,940 WARN L223 SmtUtils]: Spent 45.79s on a formula simplification. DAG size of input: 538 DAG size of output: 517 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)