/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_1a.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 02:32:49,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 02:32:49,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 02:32:49,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 02:32:49,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 02:32:49,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 02:32:49,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 02:32:49,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 02:32:49,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 02:32:49,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 02:32:49,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 02:32:49,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 02:32:49,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 02:32:49,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 02:32:49,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 02:32:49,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 02:32:49,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 02:32:49,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 02:32:49,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 02:32:49,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 02:32:49,198 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 02:32:49,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 02:32:49,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 02:32:49,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 02:32:49,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 02:32:49,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-20 02:32:49,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-20 02:32:49,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-20 02:32:49,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-20 02:32:49,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-20 02:32:49,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-20 02:32:49,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-20 02:32:49,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-20 02:32:49,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-20 02:32:49,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-20 02:32:49,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-20 02:32:49,211 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-20 02:32:49,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-20 02:32:49,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-20 02:32:49,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 02:32:49,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 02:32:49,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 02:32:49,216 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 [2022-03-20 02:32:49,244 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 02:32:49,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 02:32:49,244 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-20 02:32:49,245 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-20 02:32:49,246 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 02:32:49,246 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 02:32:49,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 02:32:49,247 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 02:32:49,247 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 02:32:49,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 02:32:49,248 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 02:32:49,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 02:32:49,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 02:32:49,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 02:32:49,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 02:32:49,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 02:32:49,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 02:32:49,249 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 02:32:49,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 02:32:49,250 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 02:32:49,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 02:32:49,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 02:32:49,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 02:32:49,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 02:32:49,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 02:32:49,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 02:32:49,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 02:32:49,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 02:32:49,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 02:32:49,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 02:32:49,251 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-20 02:32:49,251 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-20 02:32:49,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 02:32:49,251 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 02:32:49,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 02:32:49,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 02:32:49,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 02:32:49,540 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 02:32:49,540 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 02:32:49,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_1a.cil.c [2022-03-20 02:32:49,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f93095c3/43835689d7f64b9bac1e9836f11bf5c5/FLAG3bf7e244e [2022-03-20 02:32:50,012 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 02:32:50,013 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1a.cil.c [2022-03-20 02:32:50,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f93095c3/43835689d7f64b9bac1e9836f11bf5c5/FLAG3bf7e244e [2022-03-20 02:32:50,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f93095c3/43835689d7f64b9bac1e9836f11bf5c5 [2022-03-20 02:32:50,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 02:32:50,033 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 02:32:50,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 02:32:50,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 02:32:50,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 02:32:50,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 02:32:50" (1/1) ... [2022-03-20 02:32:50,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18bc20f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:32:50, skipping insertion in model container [2022-03-20 02:32:50,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 02:32:50" (1/1) ... [2022-03-20 02:32:50,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 02:32:50,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 02:32:50,284 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1a.cil.c[14184,14197] [2022-03-20 02:32:50,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 02:32:50,297 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 02:32:50,318 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1a.cil.c[14184,14197] [2022-03-20 02:32:50,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 02:32:50,333 INFO L208 MainTranslator]: Completed translation [2022-03-20 02:32:50,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:32:50 WrapperNode [2022-03-20 02:32:50,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 02:32:50,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 02:32:50,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 02:32:50,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 02:32:50,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:32:50" (1/1) ... [2022-03-20 02:32:50,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:32:50" (1/1) ... [2022-03-20 02:32:50,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:32:50" (1/1) ... [2022-03-20 02:32:50,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:32:50" (1/1) ... [2022-03-20 02:32:50,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:32:50" (1/1) ... [2022-03-20 02:32:50,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:32:50" (1/1) ... [2022-03-20 02:32:50,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:32:50" (1/1) ... [2022-03-20 02:32:50,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 02:32:50,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 02:32:50,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 02:32:50,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 02:32:50,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:32:50" (1/1) ... [2022-03-20 02:32:50,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 02:32:50,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 02:32:50,408 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 02:32:50,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 02:32:50,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 02:32:50,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 02:32:50,443 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 02:32:50,443 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 02:32:50,443 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 02:32:50,444 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 02:32:50,444 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 02:32:50,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 02:32:50,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-20 02:32:50,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 02:32:50,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-20 02:32:50,444 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 02:32:50,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 02:32:50,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 02:32:50,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 02:32:50,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 02:32:50,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 02:32:50,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 02:32:50,497 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 02:32:50,498 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 02:32:50,690 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 02:32:50,696 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 02:32:50,696 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 02:32:50,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 02:32:50 BoogieIcfgContainer [2022-03-20 02:32:50,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 02:32:50,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 02:32:50,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 02:32:50,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 02:32:50,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 02:32:50" (1/3) ... [2022-03-20 02:32:50,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643ea557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 02:32:50, skipping insertion in model container [2022-03-20 02:32:50,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:32:50" (2/3) ... [2022-03-20 02:32:50,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643ea557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 02:32:50, skipping insertion in model container [2022-03-20 02:32:50,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 02:32:50" (3/3) ... [2022-03-20 02:32:50,707 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a.cil.c [2022-03-20 02:32:50,717 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 02:32:50,717 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 02:32:50,764 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 02:32:50,771 INFO L340 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 [2022-03-20 02:32:50,771 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 02:32:50,799 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 46 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 02:32:50,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-03-20 02:32:50,803 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:32:50,804 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:32:50,805 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:32:50,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:32:50,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1713790110, now seen corresponding path program 1 times [2022-03-20 02:32:50,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:32:50,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98008015] [2022-03-20 02:32:50,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:32:50,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:32:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:51,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:32:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:32:51,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:32:51,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98008015] [2022-03-20 02:32:51,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98008015] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:32:51,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:32:51,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 02:32:51,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862671160] [2022-03-20 02:32:51,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:32:51,056 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 02:32:51,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:32:51,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 02:32:51,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 02:32:51,086 INFO L87 Difference]: Start difference. First operand has 51 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 46 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:51,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:32:51,240 INFO L93 Difference]: Finished difference Result 136 states and 224 transitions. [2022-03-20 02:32:51,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 02:32:51,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2022-03-20 02:32:51,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:32:51,252 INFO L225 Difference]: With dead ends: 136 [2022-03-20 02:32:51,252 INFO L226 Difference]: Without dead ends: 83 [2022-03-20 02:32:51,255 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 02:32:51,258 INFO L913 BasicCegarLoop]: 70 mSDtfsCounter, 187 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 02:32:51,258 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 79 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 02:32:51,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-03-20 02:32:51,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-03-20 02:32:51,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 79 states have (on average 1.5443037974683544) internal successors, (122), 79 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:51,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 125 transitions. [2022-03-20 02:32:51,330 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 125 transitions. Word has length 9 [2022-03-20 02:32:51,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:32:51,330 INFO L478 AbstractCegarLoop]: Abstraction has 83 states and 125 transitions. [2022-03-20 02:32:51,331 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:51,331 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 125 transitions. [2022-03-20 02:32:51,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-20 02:32:51,332 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:32:51,332 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:32:51,332 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 02:32:51,332 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:32:51,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:32:51,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1144534844, now seen corresponding path program 1 times [2022-03-20 02:32:51,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:32:51,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207138205] [2022-03-20 02:32:51,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:32:51,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:32:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:51,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:32:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:51,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:32:51,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:32:51,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207138205] [2022-03-20 02:32:51,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207138205] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:32:51,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:32:51,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 02:32:51,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720154100] [2022-03-20 02:32:51,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:32:51,425 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 02:32:51,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:32:51,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 02:32:51,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 02:32:51,426 INFO L87 Difference]: Start difference. First operand 83 states and 125 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:51,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:32:51,595 INFO L93 Difference]: Finished difference Result 160 states and 250 transitions. [2022-03-20 02:32:51,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 02:32:51,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-03-20 02:32:51,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:32:51,598 INFO L225 Difference]: With dead ends: 160 [2022-03-20 02:32:51,598 INFO L226 Difference]: Without dead ends: 120 [2022-03-20 02:32:51,599 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 02:32:51,600 INFO L913 BasicCegarLoop]: 114 mSDtfsCounter, 118 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 02:32:51,600 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 121 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 02:32:51,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-03-20 02:32:51,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2022-03-20 02:32:51,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.5172413793103448) internal successors, (176), 116 states have internal predecessors, (176), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:51,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 179 transitions. [2022-03-20 02:32:51,631 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 179 transitions. Word has length 14 [2022-03-20 02:32:51,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:32:51,631 INFO L478 AbstractCegarLoop]: Abstraction has 120 states and 179 transitions. [2022-03-20 02:32:51,631 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:51,631 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 179 transitions. [2022-03-20 02:32:51,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-20 02:32:51,662 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:32:51,662 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:32:51,662 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 02:32:51,663 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:32:51,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:32:51,664 INFO L85 PathProgramCache]: Analyzing trace with hash -974235404, now seen corresponding path program 1 times [2022-03-20 02:32:51,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:32:51,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51877747] [2022-03-20 02:32:51,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:32:51,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:32:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:51,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:32:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:51,766 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 02:32:51,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:32:51,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51877747] [2022-03-20 02:32:51,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51877747] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:32:51,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:32:51,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 02:32:51,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659191981] [2022-03-20 02:32:51,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:32:51,768 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 02:32:51,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:32:51,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 02:32:51,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 02:32:51,769 INFO L87 Difference]: Start difference. First operand 120 states and 179 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:51,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:32:51,939 INFO L93 Difference]: Finished difference Result 234 states and 359 transitions. [2022-03-20 02:32:51,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 02:32:51,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-03-20 02:32:51,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:32:51,941 INFO L225 Difference]: With dead ends: 234 [2022-03-20 02:32:51,941 INFO L226 Difference]: Without dead ends: 157 [2022-03-20 02:32:51,942 INFO L912 BasicCegarLoop]: 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 [2022-03-20 02:32:51,943 INFO L913 BasicCegarLoop]: 117 mSDtfsCounter, 117 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 02:32:51,944 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 124 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 02:32:51,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-03-20 02:32:51,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2022-03-20 02:32:51,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 153 states have (on average 1.5098039215686274) internal successors, (231), 153 states have internal predecessors, (231), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:51,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 234 transitions. [2022-03-20 02:32:51,971 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 234 transitions. Word has length 20 [2022-03-20 02:32:51,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:32:51,972 INFO L478 AbstractCegarLoop]: Abstraction has 157 states and 234 transitions. [2022-03-20 02:32:51,972 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:51,972 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 234 transitions. [2022-03-20 02:32:51,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-20 02:32:51,974 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:32:51,975 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 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] [2022-03-20 02:32:51,975 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 02:32:51,975 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:32:51,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:32:51,977 INFO L85 PathProgramCache]: Analyzing trace with hash -674137767, now seen corresponding path program 1 times [2022-03-20 02:32:51,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:32:51,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36757320] [2022-03-20 02:32:51,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:32:51,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:32:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:52,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:32:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:52,046 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 02:32:52,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:32:52,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36757320] [2022-03-20 02:32:52,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36757320] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:32:52,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:32:52,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 02:32:52,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697140664] [2022-03-20 02:32:52,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:32:52,050 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 02:32:52,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:32:52,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 02:32:52,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 02:32:52,051 INFO L87 Difference]: Start difference. First operand 157 states and 234 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:52,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:32:52,159 INFO L93 Difference]: Finished difference Result 325 states and 488 transitions. [2022-03-20 02:32:52,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 02:32:52,160 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-03-20 02:32:52,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:32:52,162 INFO L225 Difference]: With dead ends: 325 [2022-03-20 02:32:52,163 INFO L226 Difference]: Without dead ends: 174 [2022-03-20 02:32:52,165 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 02:32:52,167 INFO L913 BasicCegarLoop]: 72 mSDtfsCounter, 67 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 02:32:52,167 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 79 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 02:32:52,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-03-20 02:32:52,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2022-03-20 02:32:52,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 168 states have (on average 1.4702380952380953) internal successors, (247), 168 states have internal predecessors, (247), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:52,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 250 transitions. [2022-03-20 02:32:52,185 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 250 transitions. Word has length 35 [2022-03-20 02:32:52,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:32:52,185 INFO L478 AbstractCegarLoop]: Abstraction has 172 states and 250 transitions. [2022-03-20 02:32:52,185 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:52,185 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 250 transitions. [2022-03-20 02:32:52,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-20 02:32:52,187 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:32:52,187 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 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] [2022-03-20 02:32:52,191 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-20 02:32:52,192 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:32:52,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:32:52,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1014805975, now seen corresponding path program 1 times [2022-03-20 02:32:52,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:32:52,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425514747] [2022-03-20 02:32:52,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:32:52,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:32:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:52,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:32:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:52,263 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-20 02:32:52,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:32:52,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425514747] [2022-03-20 02:32:52,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425514747] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:32:52,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:32:52,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 02:32:52,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629723040] [2022-03-20 02:32:52,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:32:52,265 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 02:32:52,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:32:52,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 02:32:52,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 02:32:52,266 INFO L87 Difference]: Start difference. First operand 172 states and 250 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:52,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:32:52,394 INFO L93 Difference]: Finished difference Result 382 states and 571 transitions. [2022-03-20 02:32:52,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 02:32:52,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-03-20 02:32:52,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:32:52,397 INFO L225 Difference]: With dead ends: 382 [2022-03-20 02:32:52,397 INFO L226 Difference]: Without dead ends: 216 [2022-03-20 02:32:52,399 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 02:32:52,406 INFO L913 BasicCegarLoop]: 71 mSDtfsCounter, 83 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 02:32:52,407 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 78 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 02:32:52,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-03-20 02:32:52,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 211. [2022-03-20 02:32:52,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 207 states have (on average 1.3816425120772946) internal successors, (286), 207 states have internal predecessors, (286), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:52,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 289 transitions. [2022-03-20 02:32:52,428 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 289 transitions. Word has length 35 [2022-03-20 02:32:52,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:32:52,429 INFO L478 AbstractCegarLoop]: Abstraction has 211 states and 289 transitions. [2022-03-20 02:32:52,429 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:52,429 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 289 transitions. [2022-03-20 02:32:52,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-20 02:32:52,431 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:32:52,431 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 3, 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] [2022-03-20 02:32:52,431 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-20 02:32:52,431 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:32:52,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:32:52,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1542489334, now seen corresponding path program 1 times [2022-03-20 02:32:52,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:32:52,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302780616] [2022-03-20 02:32:52,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:32:52,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:32:52,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:52,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:32:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:52,488 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-20 02:32:52,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:32:52,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302780616] [2022-03-20 02:32:52,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302780616] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:32:52,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:32:52,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 02:32:52,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010314748] [2022-03-20 02:32:52,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:32:52,490 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 02:32:52,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:32:52,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 02:32:52,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 02:32:52,491 INFO L87 Difference]: Start difference. First operand 211 states and 289 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:52,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:32:52,601 INFO L93 Difference]: Finished difference Result 418 states and 581 transitions. [2022-03-20 02:32:52,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 02:32:52,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-03-20 02:32:52,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:32:52,604 INFO L225 Difference]: With dead ends: 418 [2022-03-20 02:32:52,604 INFO L226 Difference]: Without dead ends: 268 [2022-03-20 02:32:52,605 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 02:32:52,611 INFO L913 BasicCegarLoop]: 116 mSDtfsCounter, 107 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 02:32:52,613 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 123 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 02:32:52,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-03-20 02:32:52,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 266. [2022-03-20 02:32:52,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 262 states have (on average 1.3778625954198473) internal successors, (361), 262 states have internal predecessors, (361), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:52,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 364 transitions. [2022-03-20 02:32:52,636 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 364 transitions. Word has length 49 [2022-03-20 02:32:52,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:32:52,637 INFO L478 AbstractCegarLoop]: Abstraction has 266 states and 364 transitions. [2022-03-20 02:32:52,637 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:52,637 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 364 transitions. [2022-03-20 02:32:52,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-20 02:32:52,644 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:32:52,644 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 3, 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] [2022-03-20 02:32:52,644 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-20 02:32:52,645 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:32:52,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:32:52,646 INFO L85 PathProgramCache]: Analyzing trace with hash 446239409, now seen corresponding path program 1 times [2022-03-20 02:32:52,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:32:52,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356348830] [2022-03-20 02:32:52,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:32:52,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:32:52,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:52,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:32:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:52,734 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-03-20 02:32:52,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:32:52,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356348830] [2022-03-20 02:32:52,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356348830] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:32:52,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:32:52,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 02:32:52,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900476894] [2022-03-20 02:32:52,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:32:52,736 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 02:32:52,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:32:52,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 02:32:52,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 02:32:52,736 INFO L87 Difference]: Start difference. First operand 266 states and 364 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:52,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:32:52,846 INFO L93 Difference]: Finished difference Result 524 states and 735 transitions. [2022-03-20 02:32:52,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 02:32:52,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2022-03-20 02:32:52,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:32:52,848 INFO L225 Difference]: With dead ends: 524 [2022-03-20 02:32:52,848 INFO L226 Difference]: Without dead ends: 186 [2022-03-20 02:32:52,849 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 02:32:52,851 INFO L913 BasicCegarLoop]: 70 mSDtfsCounter, 85 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 02:32:52,852 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 77 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 02:32:52,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-03-20 02:32:52,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 183. [2022-03-20 02:32:52,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 179 states have (on average 1.2905027932960893) internal successors, (231), 179 states have internal predecessors, (231), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:52,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 234 transitions. [2022-03-20 02:32:52,861 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 234 transitions. Word has length 52 [2022-03-20 02:32:52,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:32:52,863 INFO L478 AbstractCegarLoop]: Abstraction has 183 states and 234 transitions. [2022-03-20 02:32:52,863 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:52,863 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 234 transitions. [2022-03-20 02:32:52,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-20 02:32:52,865 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:32:52,865 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-03-20 02:32:52,865 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-20 02:32:52,865 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:32:52,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:32:52,865 INFO L85 PathProgramCache]: Analyzing trace with hash -209652788, now seen corresponding path program 1 times [2022-03-20 02:32:52,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:32:52,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824026880] [2022-03-20 02:32:52,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:32:52,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:32:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:52,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:32:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:52,959 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-03-20 02:32:52,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:32:52,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824026880] [2022-03-20 02:32:52,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824026880] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:32:52,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:32:52,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 02:32:52,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12196970] [2022-03-20 02:32:52,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:32:52,961 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 02:32:52,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:32:52,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 02:32:52,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 02:32:52,964 INFO L87 Difference]: Start difference. First operand 183 states and 234 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:53,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:32:53,037 INFO L93 Difference]: Finished difference Result 275 states and 332 transitions. [2022-03-20 02:32:53,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 02:32:53,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 80 [2022-03-20 02:32:53,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:32:53,039 INFO L225 Difference]: With dead ends: 275 [2022-03-20 02:32:53,039 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 02:32:53,040 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 02:32:53,041 INFO L913 BasicCegarLoop]: 74 mSDtfsCounter, 76 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 02:32:53,041 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 81 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 02:32:53,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 02:32:53,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 02:32:53,042 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) [2022-03-20 02:32:53,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 02:32:53,042 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 80 [2022-03-20 02:32:53,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:32:53,043 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 02:32:53,043 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:53,043 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 02:32:53,043 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 02:32:53,045 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 02:32:53,046 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-20 02:32:53,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-20 02:32:53,319 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 13) no Hoare annotation was computed. [2022-03-20 02:32:53,319 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 13) no Hoare annotation was computed. [2022-03-20 02:32:53,319 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 13) no Hoare annotation was computed. [2022-03-20 02:32:53,319 INFO L885 garLoopResultBuilder]: At program point L225(lines 20 229) the Hoare annotation is: true [2022-03-20 02:32:53,319 INFO L882 garLoopResultBuilder]: For program point L126(lines 126 130) no Hoare annotation was computed. [2022-03-20 02:32:53,320 INFO L882 garLoopResultBuilder]: For program point L60(lines 60 207) no Hoare annotation was computed. [2022-03-20 02:32:53,320 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 20 229) no Hoare annotation was computed. [2022-03-20 02:32:53,320 INFO L882 garLoopResultBuilder]: For program point L184(lines 184 186) no Hoare annotation was computed. [2022-03-20 02:32:53,320 INFO L882 garLoopResultBuilder]: For program point L118(lines 118 122) no Hoare annotation was computed. [2022-03-20 02:32:53,320 INFO L878 garLoopResultBuilder]: At program point L85(lines 84 195) the Hoare annotation is: (let ((.cse0 (<= 8672 main_~s__state~0))) (or (and .cse0 (= main_~blastFlag~0 0)) (and .cse0 (= main_~blastFlag~0 1)) (and (= 3 main_~blastFlag~0) .cse0) (and .cse0 (= 2 main_~blastFlag~0)))) [2022-03-20 02:32:53,320 INFO L882 garLoopResultBuilder]: For program point L52(lines 52 211) no Hoare annotation was computed. [2022-03-20 02:32:53,320 INFO L878 garLoopResultBuilder]: At program point L77(lines 76 199) the Hoare annotation is: (let ((.cse0 (<= 8640 main_~s__state~0))) (or (and (= main_~blastFlag~0 1) .cse0) (and .cse0 (= 2 main_~blastFlag~0)) (and (= 3 main_~blastFlag~0) (not (= main_~s__hit~0 0)) .cse0) (and (= main_~blastFlag~0 0) .cse0))) [2022-03-20 02:32:53,320 INFO L882 garLoopResultBuilder]: For program point L44(lines 44 215) no Hoare annotation was computed. [2022-03-20 02:32:53,321 INFO L878 garLoopResultBuilder]: At program point L69(lines 68 203) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-03-20 02:32:53,321 INFO L878 garLoopResultBuilder]: At program point L61(lines 60 207) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-03-20 02:32:53,321 INFO L878 garLoopResultBuilder]: At program point L185(lines 20 229) the Hoare annotation is: false [2022-03-20 02:32:53,321 INFO L878 garLoopResultBuilder]: At program point L53(lines 52 211) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-03-20 02:32:53,321 INFO L878 garLoopResultBuilder]: At program point L45(lines 44 215) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-03-20 02:32:53,321 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 20 229) no Hoare annotation was computed. [2022-03-20 02:32:53,321 INFO L882 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 227) no Hoare annotation was computed. [2022-03-20 02:32:53,322 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 20 229) the Hoare annotation is: true [2022-03-20 02:32:53,322 INFO L882 garLoopResultBuilder]: For program point L80(lines 80 197) no Hoare annotation was computed. [2022-03-20 02:32:53,322 INFO L882 garLoopResultBuilder]: For program point L72(lines 72 201) no Hoare annotation was computed. [2022-03-20 02:32:53,322 INFO L882 garLoopResultBuilder]: For program point L163-1(lines 86 195) no Hoare annotation was computed. [2022-03-20 02:32:53,322 INFO L882 garLoopResultBuilder]: For program point L64(lines 64 205) no Hoare annotation was computed. [2022-03-20 02:32:53,322 INFO L882 garLoopResultBuilder]: For program point L97-1(lines 86 195) no Hoare annotation was computed. [2022-03-20 02:32:53,322 INFO L878 garLoopResultBuilder]: At program point L188(lines 34 223) the Hoare annotation is: (let ((.cse0 (= 3 main_~blastFlag~0))) (or (= main_~blastFlag~0 0) (= main_~blastFlag~0 1) (and .cse0 (not (= main_~s__hit~0 0)) (<= 8640 main_~s__state~0)) (and .cse0 (<= 8672 main_~s__state~0)) (= 2 main_~blastFlag~0))) [2022-03-20 02:32:53,322 INFO L882 garLoopResultBuilder]: For program point L56(lines 56 209) no Hoare annotation was computed. [2022-03-20 02:32:53,322 INFO L882 garLoopResultBuilder]: For program point L147(lines 147 151) no Hoare annotation was computed. [2022-03-20 02:32:53,323 INFO L878 garLoopResultBuilder]: At program point L81(lines 80 197) the Hoare annotation is: (let ((.cse0 (<= 8640 main_~s__state~0))) (or (and (= main_~blastFlag~0 1) .cse0) (and .cse0 (= 2 main_~blastFlag~0)) (and (= 3 main_~blastFlag~0) (not (= main_~s__hit~0 0)) .cse0) (and (= main_~blastFlag~0 0) .cse0))) [2022-03-20 02:32:53,323 INFO L882 garLoopResultBuilder]: For program point L48(lines 48 213) no Hoare annotation was computed. [2022-03-20 02:32:53,323 INFO L878 garLoopResultBuilder]: At program point L73(lines 72 201) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-03-20 02:32:53,323 INFO L878 garLoopResultBuilder]: At program point L65(lines 64 205) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-03-20 02:32:53,323 INFO L878 garLoopResultBuilder]: At program point L57(lines 56 209) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-03-20 02:32:53,323 INFO L882 garLoopResultBuilder]: For program point L90-1(lines 90 92) no Hoare annotation was computed. [2022-03-20 02:32:53,323 INFO L882 garLoopResultBuilder]: For program point L181-1(lines 86 195) no Hoare annotation was computed. [2022-03-20 02:32:53,323 INFO L878 garLoopResultBuilder]: At program point L49(lines 48 213) the Hoare annotation is: (let ((.cse0 (= (+ (- 8512) main_~s__state~0) 0))) (or (and (= (+ (- 2) main_~blastFlag~0) 0) .cse0) (and (= (+ (- 1) main_~blastFlag~0) 0) .cse0) (and (= main_~blastFlag~0 0) .cse0))) [2022-03-20 02:32:53,324 INFO L882 garLoopResultBuilder]: For program point L41(lines 41 216) no Hoare annotation was computed. [2022-03-20 02:32:53,324 INFO L878 garLoopResultBuilder]: At program point L132(lines 125 134) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-03-20 02:32:53,324 INFO L878 garLoopResultBuilder]: At program point L124(lines 117 135) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-03-20 02:32:53,324 INFO L882 garLoopResultBuilder]: For program point L174-1(lines 174 176) no Hoare annotation was computed. [2022-03-20 02:32:53,324 INFO L878 garLoopResultBuilder]: At program point L42(lines 41 216) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-03-20 02:32:53,324 INFO L882 garLoopResultBuilder]: For program point L117(lines 117 135) no Hoare annotation was computed. [2022-03-20 02:32:53,324 INFO L882 garLoopResultBuilder]: For program point L84(lines 84 195) no Hoare annotation was computed. [2022-03-20 02:32:53,324 INFO L882 garLoopResultBuilder]: For program point L76(lines 76 199) no Hoare annotation was computed. [2022-03-20 02:32:53,324 INFO L882 garLoopResultBuilder]: For program point L68(lines 68 203) no Hoare annotation was computed. [2022-03-20 02:32:53,324 INFO L882 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2022-03-20 02:32:53,324 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-20 02:32:53,325 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-20 02:32:53,325 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-20 02:32:53,325 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-20 02:32:53,325 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-20 02:32:53,325 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-20 02:32:53,325 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-20 02:32:53,328 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:32:53,329 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 02:32:53,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 02:32:53 BoogieIcfgContainer [2022-03-20 02:32:53,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 02:32:53,350 INFO L158 Benchmark]: Toolchain (without parser) took 3317.44ms. Allocated memory was 190.8MB in the beginning and 256.9MB in the end (delta: 66.1MB). Free memory was 136.4MB in the beginning and 105.2MB in the end (delta: 31.3MB). Peak memory consumption was 97.3MB. Max. memory is 8.0GB. [2022-03-20 02:32:53,350 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 190.8MB. Free memory is still 152.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 02:32:53,351 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.62ms. Allocated memory is still 190.8MB. Free memory was 136.3MB in the beginning and 161.2MB in the end (delta: -24.9MB). Peak memory consumption was 12.7MB. Max. memory is 8.0GB. [2022-03-20 02:32:53,351 INFO L158 Benchmark]: Boogie Preprocessor took 38.95ms. Allocated memory is still 190.8MB. Free memory was 161.2MB in the beginning and 159.5MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 02:32:53,351 INFO L158 Benchmark]: RCFGBuilder took 324.38ms. Allocated memory is still 190.8MB. Free memory was 159.5MB in the beginning and 146.8MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-20 02:32:53,351 INFO L158 Benchmark]: TraceAbstraction took 2650.11ms. Allocated memory was 190.8MB in the beginning and 256.9MB in the end (delta: 66.1MB). Free memory was 146.2MB in the beginning and 105.2MB in the end (delta: 41.0MB). Peak memory consumption was 106.7MB. Max. memory is 8.0GB. [2022-03-20 02:32:53,353 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 190.8MB. Free memory is still 152.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 299.62ms. Allocated memory is still 190.8MB. Free memory was 136.3MB in the beginning and 161.2MB in the end (delta: -24.9MB). Peak memory consumption was 12.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.95ms. Allocated memory is still 190.8MB. Free memory was 161.2MB in the beginning and 159.5MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 324.38ms. Allocated memory is still 190.8MB. Free memory was 159.5MB in the beginning and 146.8MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 2650.11ms. Allocated memory was 190.8MB in the beginning and 256.9MB in the end (delta: 66.1MB). Free memory was 146.2MB in the beginning and 105.2MB in the end (delta: 41.0MB). Peak memory consumption was 106.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 227]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 8, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 840 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 840 mSDsluCounter, 762 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 58 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 560 IncrementalHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 704 mSDtfsCounter, 560 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=266occurred in iteration=6, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 12 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 21 PreInvPairs, 86 NumberOfFragments, 307 HoareAnnotationTreeSize, 21 FomulaSimplifications, 64 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 21 FomulaSimplificationsInter, 131 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 294 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 286 ConstructedInterpolants, 0 QuantifiedInterpolants, 596 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 218/218 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 117]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 80]: Loop Invariant Derived loop invariant: (((blastFlag == 1 && 8640 <= s__state) || (8640 <= s__state && 2 == blastFlag)) || ((3 == blastFlag && !(s__hit == 0)) && 8640 <= s__state)) || (blastFlag == 0 && 8640 <= s__state) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 76]: Loop Invariant Derived loop invariant: (((blastFlag == 1 && 8640 <= s__state) || (8640 <= s__state && 2 == blastFlag)) || ((3 == blastFlag && !(s__hit == 0)) && 8640 <= s__state)) || (blastFlag == 0 && 8640 <= s__state) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((blastFlag == 0 || blastFlag == 1) || ((3 == blastFlag && !(s__hit == 0)) && 8640 <= s__state)) || (3 == blastFlag && 8672 <= s__state)) || 2 == blastFlag - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: (((8672 <= s__state && blastFlag == 0) || (8672 <= s__state && blastFlag == 1)) || (3 == blastFlag && 8672 <= s__state)) || (8672 <= s__state && 2 == blastFlag) - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: ((-2 + blastFlag == 0 && -8512 + s__state == 0) || (-1 + blastFlag == 0 && -8512 + s__state == 0)) || (blastFlag == 0 && -8512 + s__state == 0) - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 72]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 RESULT: Ultimate proved your program to be correct! [2022-03-20 02:32:53,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...