/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/Problem06_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 22:56:29,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 22:56:29,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 22:56:29,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-30 22:56:29,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-30 22:56:29,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-30 22:56:29,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-30 22:56:29,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-30 22:56:29,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-30 22:56:29,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-30 22:56:29,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-30 22:56:29,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-30 22:56:29,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-30 22:56:29,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-30 22:56:29,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-30 22:56:29,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-30 22:56:29,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-30 22:56:29,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-30 22:56:29,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-30 22:56:29,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-30 22:56:29,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-30 22:56:29,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-30 22:56:29,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-30 22:56:29,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-30 22:56:29,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-30 22:56:29,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-30 22:56:29,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-30 22:56:29,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-30 22:56:29,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-30 22:56:29,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-30 22:56:29,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-30 22:56:29,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-30 22:56:29,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-30 22:56:29,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-30 22:56:29,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-30 22:56:29,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-30 22:56:29,426 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-30 22:56:29,452 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 22:56:29,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 22:56:29,453 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 22:56:29,453 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 22:56:29,454 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 22:56:29,455 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 22:56:29,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 22:56:29,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 22:56:29,455 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 22:56:29,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 22:56:29,456 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 22:56:29,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 22:56:29,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 22:56:29,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 22:56:29,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 22:56:29,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 22:56:29,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 22:56:29,457 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 22:56:29,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 22:56:29,457 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 22:56:29,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 22:56:29,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 22:56:29,458 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 22:56:29,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 22:56:29,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 22:56:29,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 22:56:29,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 22:56:29,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 22:56:29,458 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 22:56:29,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 22:56:29,459 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 22:56:29,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 22:56:29,459 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 22:56:29,459 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 22:56:29,459 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 22:56:29,459 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 22:56:29,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 22:56:29,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 22:56:29,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 22:56:29,686 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 22:56:29,687 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 22:56:29,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem06_label06.c [2023-03-30 22:56:30,838 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 22:56:31,369 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 22:56:31,370 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem06_label06.c [2023-03-30 22:56:31,420 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddf969858/a6790904d88f48d986d9193339b943f9/FLAGa707ebea5 [2023-03-30 22:56:31,435 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddf969858/a6790904d88f48d986d9193339b943f9 [2023-03-30 22:56:31,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 22:56:31,438 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 22:56:31,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 22:56:31,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 22:56:31,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 22:56:31,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 10:56:31" (1/1) ... [2023-03-30 22:56:31,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@227737f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:56:31, skipping insertion in model container [2023-03-30 22:56:31,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 10:56:31" (1/1) ... [2023-03-30 22:56:31,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 22:56:31,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 22:56:32,946 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/Problem06_label06.c[333549,333562] [2023-03-30 22:56:32,966 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 22:56:32,978 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 22:56:33,698 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/Problem06_label06.c[333549,333562] [2023-03-30 22:56:33,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 22:56:33,740 INFO L208 MainTranslator]: Completed translation [2023-03-30 22:56:33,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:56:33 WrapperNode [2023-03-30 22:56:33,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 22:56:33,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 22:56:33,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 22:56:33,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 22:56:33,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:56:33" (1/1) ... [2023-03-30 22:56:33,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:56:33" (1/1) ... [2023-03-30 22:56:33,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:56:33" (1/1) ... [2023-03-30 22:56:33,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:56:33" (1/1) ... [2023-03-30 22:56:33,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:56:33" (1/1) ... [2023-03-30 22:56:33,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:56:33" (1/1) ... [2023-03-30 22:56:33,979 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:56:33" (1/1) ... [2023-03-30 22:56:33,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:56:33" (1/1) ... [2023-03-30 22:56:34,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 22:56:34,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 22:56:34,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 22:56:34,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 22:56:34,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:56:33" (1/1) ... [2023-03-30 22:56:34,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 22:56:34,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:56:34,075 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-30 22:56:34,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-30 22:56:34,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 22:56:34,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 22:56:34,116 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 22:56:34,116 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-30 22:56:34,116 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-03-30 22:56:34,116 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-03-30 22:56:34,116 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-03-30 22:56:34,116 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-03-30 22:56:34,116 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 22:56:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-30 22:56:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-03-30 22:56:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-03-30 22:56:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-03-30 22:56:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-03-30 22:56:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 22:56:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 22:56:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 22:56:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 22:56:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 22:56:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-30 22:56:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 22:56:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 22:56:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 22:56:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 22:56:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 22:56:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 22:56:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 22:56:34,250 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 22:56:34,252 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 22:56:39,611 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 22:56:39,627 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 22:56:39,627 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-30 22:56:39,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 10:56:39 BoogieIcfgContainer [2023-03-30 22:56:39,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 22:56:39,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 22:56:39,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 22:56:39,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 22:56:39,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 10:56:31" (1/3) ... [2023-03-30 22:56:39,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336d342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 10:56:39, skipping insertion in model container [2023-03-30 22:56:39,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:56:33" (2/3) ... [2023-03-30 22:56:39,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336d342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 10:56:39, skipping insertion in model container [2023-03-30 22:56:39,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 10:56:39" (3/3) ... [2023-03-30 22:56:39,638 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem06_label06.c [2023-03-30 22:56:39,653 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 22:56:39,654 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 22:56:39,717 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 22:56:39,722 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;@320f5db7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 22:56:39,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 22:56:39,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 1315 states, 1299 states have (on average 1.8498845265588915) internal successors, (2403), 1300 states have internal predecessors, (2403), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-03-30 22:56:39,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 971 [2023-03-30 22:56:39,784 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:56:39,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:56:39,786 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:56:39,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:56:39,791 INFO L85 PathProgramCache]: Analyzing trace with hash -632171025, now seen corresponding path program 1 times [2023-03-30 22:56:39,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:56:39,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380942892] [2023-03-30 22:56:39,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:56:39,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:56:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:56:45,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:56:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:56:45,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 22:56:45,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:56:45,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380942892] [2023-03-30 22:56:45,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380942892] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:56:45,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 22:56:45,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-30 22:56:45,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190517898] [2023-03-30 22:56:45,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:56:45,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 22:56:45,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:56:45,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 22:56:45,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 22:56:45,978 INFO L87 Difference]: Start difference. First operand has 1315 states, 1299 states have (on average 1.8498845265588915) internal successors, (2403), 1300 states have internal predecessors, (2403), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 5 states, 4 states have (on average 240.5) internal successors, (962), 3 states have internal predecessors, (962), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 22:56:54,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:56:54,373 INFO L93 Difference]: Finished difference Result 3767 states and 7011 transitions. [2023-03-30 22:56:54,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-30 22:56:54,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 240.5) internal successors, (962), 3 states have internal predecessors, (962), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 970 [2023-03-30 22:56:54,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:56:54,405 INFO L225 Difference]: With dead ends: 3767 [2023-03-30 22:56:54,406 INFO L226 Difference]: Without dead ends: 2388 [2023-03-30 22:56:54,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-03-30 22:56:54,420 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 4255 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 5045 mSolverCounterSat, 1728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4255 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 6773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1728 IncrementalHoareTripleChecker+Valid, 5045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-03-30 22:56:54,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4255 Valid, 288 Invalid, 6773 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1728 Valid, 5045 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-03-30 22:56:54,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2023-03-30 22:56:54,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2365. [2023-03-30 22:56:54,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2365 states, 2331 states have (on average 1.7696267696267696) internal successors, (4125), 2333 states have internal predecessors, (4125), 12 states have call successors, (12), 12 states have call predecessors, (12), 21 states have return successors, (31), 19 states have call predecessors, (31), 11 states have call successors, (31) [2023-03-30 22:56:54,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2365 states to 2365 states and 4168 transitions. [2023-03-30 22:56:54,563 INFO L78 Accepts]: Start accepts. Automaton has 2365 states and 4168 transitions. Word has length 970 [2023-03-30 22:56:54,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:56:54,566 INFO L495 AbstractCegarLoop]: Abstraction has 2365 states and 4168 transitions. [2023-03-30 22:56:54,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 240.5) internal successors, (962), 3 states have internal predecessors, (962), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 22:56:54,567 INFO L276 IsEmpty]: Start isEmpty. Operand 2365 states and 4168 transitions. [2023-03-30 22:56:54,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 979 [2023-03-30 22:56:54,631 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:56:54,632 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:56:54,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 22:56:54,632 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:56:54,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:56:54,635 INFO L85 PathProgramCache]: Analyzing trace with hash -590505808, now seen corresponding path program 1 times [2023-03-30 22:56:54,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:56:54,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152606973] [2023-03-30 22:56:54,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:56:54,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:56:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:56:57,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:56:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:56:57,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 22:56:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:56:57,220 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 22:56:57,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:56:57,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152606973] [2023-03-30 22:56:57,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152606973] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:56:57,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 22:56:57,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-30 22:56:57,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761608704] [2023-03-30 22:56:57,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:56:57,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 22:56:57,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:56:57,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 22:56:57,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-30 22:56:57,227 INFO L87 Difference]: Start difference. First operand 2365 states and 4168 transitions. Second operand has 8 states, 7 states have (on average 138.28571428571428) internal successors, (968), 5 states have internal predecessors, (968), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 22:57:09,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:57:09,988 INFO L93 Difference]: Finished difference Result 9461 states and 16834 transitions. [2023-03-30 22:57:09,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-30 22:57:09,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 138.28571428571428) internal successors, (968), 5 states have internal predecessors, (968), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 978 [2023-03-30 22:57:09,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:57:10,022 INFO L225 Difference]: With dead ends: 9461 [2023-03-30 22:57:10,022 INFO L226 Difference]: Without dead ends: 7102 [2023-03-30 22:57:10,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-03-30 22:57:10,030 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 8352 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 12462 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8352 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 12907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 12462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2023-03-30 22:57:10,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8352 Valid, 857 Invalid, 12907 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [445 Valid, 12462 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2023-03-30 22:57:10,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7102 states. [2023-03-30 22:57:10,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7102 to 7065. [2023-03-30 22:57:10,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7065 states, 6951 states have (on average 1.7652136383254209) internal successors, (12270), 6962 states have internal predecessors, (12270), 32 states have call successors, (32), 32 states have call predecessors, (32), 81 states have return successors, (223), 70 states have call predecessors, (223), 31 states have call successors, (223) [2023-03-30 22:57:10,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7065 states to 7065 states and 12525 transitions. [2023-03-30 22:57:10,272 INFO L78 Accepts]: Start accepts. Automaton has 7065 states and 12525 transitions. Word has length 978 [2023-03-30 22:57:10,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:57:10,273 INFO L495 AbstractCegarLoop]: Abstraction has 7065 states and 12525 transitions. [2023-03-30 22:57:10,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 138.28571428571428) internal successors, (968), 5 states have internal predecessors, (968), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 22:57:10,274 INFO L276 IsEmpty]: Start isEmpty. Operand 7065 states and 12525 transitions. [2023-03-30 22:57:10,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 981 [2023-03-30 22:57:10,300 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:57:10,300 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:57:10,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-30 22:57:10,301 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:57:10,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:57:10,301 INFO L85 PathProgramCache]: Analyzing trace with hash 381687468, now seen corresponding path program 1 times [2023-03-30 22:57:10,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:57:10,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672795255] [2023-03-30 22:57:10,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:57:10,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:57:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:57:12,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:57:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:57:12,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 22:57:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:57:12,365 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 22:57:12,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:57:12,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672795255] [2023-03-30 22:57:12,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672795255] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:57:12,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 22:57:12,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-30 22:57:12,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581685927] [2023-03-30 22:57:12,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:57:12,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 22:57:12,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:57:12,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 22:57:12,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-30 22:57:12,370 INFO L87 Difference]: Start difference. First operand 7065 states and 12525 transitions. Second operand has 8 states, 7 states have (on average 138.57142857142858) internal successors, (970), 5 states have internal predecessors, (970), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)