/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/psyco/psyco_security.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 03:55:48,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 03:55:48,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 03:55:48,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 03:55:48,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 03:55:48,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 03:55:48,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 03:55:48,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 03:55:48,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 03:55:48,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 03:55:48,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 03:55:48,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 03:55:48,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 03:55:48,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 03:55:48,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 03:55:48,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 03:55:48,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 03:55:48,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 03:55:48,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 03:55:48,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 03:55:48,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 03:55:48,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 03:55:48,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 03:55:48,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 03:55:48,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 03:55:48,161 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 03:55:48,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 03:55:48,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 03:55:48,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 03:55:48,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 03:55:48,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 03:55:48,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 03:55:48,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 03:55:48,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 03:55:48,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 03:55:48,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 03:55:48,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 03:55:48,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 03:55:48,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 03:55:48,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 03:55:48,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 03:55:48,185 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 03:55:48,242 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 03:55:48,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 03:55:48,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 03:55:48,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 03:55:48,249 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 03:55:48,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 03:55:48,249 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 03:55:48,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 03:55:48,250 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 03:55:48,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 03:55:48,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 03:55:48,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 03:55:48,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 03:55:48,253 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 03:55:48,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 03:55:48,253 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 03:55:48,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 03:55:48,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 03:55:48,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 03:55:48,254 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 03:55:48,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 03:55:48,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 03:55:48,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 03:55:48,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 03:55:48,255 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 03:55:48,256 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 03:55:48,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 03:55:48,256 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 03:55:48,256 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 03:55:48,257 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-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 03:55:48,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 03:55:48,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 03:55:48,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 03:55:48,733 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 03:55:48,734 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 03:55:48,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_security.c [2020-10-27 03:55:48,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f783b74fe/4751a6456fa1443b8821a585949b2b58/FLAG3c0f461a4 [2020-10-27 03:55:49,494 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 03:55:49,495 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/psyco/psyco_security.c [2020-10-27 03:55:49,519 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f783b74fe/4751a6456fa1443b8821a585949b2b58/FLAG3c0f461a4 [2020-10-27 03:55:49,845 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f783b74fe/4751a6456fa1443b8821a585949b2b58 [2020-10-27 03:55:49,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 03:55:49,860 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 03:55:49,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 03:55:49,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 03:55:49,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 03:55:49,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:55:49" (1/1) ... [2020-10-27 03:55:49,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ab08d32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:49, skipping insertion in model container [2020-10-27 03:55:49,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:55:49" (1/1) ... [2020-10-27 03:55:49,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 03:55:49,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 03:55:50,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 03:55:50,255 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 03:55:50,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 03:55:50,357 INFO L208 MainTranslator]: Completed translation [2020-10-27 03:55:50,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:50 WrapperNode [2020-10-27 03:55:50,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 03:55:50,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 03:55:50,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 03:55:50,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 03:55:50,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:50" (1/1) ... [2020-10-27 03:55:50,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:50" (1/1) ... [2020-10-27 03:55:50,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:50" (1/1) ... [2020-10-27 03:55:50,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:50" (1/1) ... [2020-10-27 03:55:50,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:50" (1/1) ... [2020-10-27 03:55:50,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:50" (1/1) ... [2020-10-27 03:55:50,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:50" (1/1) ... [2020-10-27 03:55:50,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 03:55:50,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 03:55:50,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 03:55:50,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 03:55:50,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 03:55:50,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 03:55:50,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 03:55:50,497 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 03:55:50,497 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 03:55:50,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 03:55:50,498 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 03:55:50,498 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 03:55:50,499 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 03:55:50,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 03:55:50,499 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 03:55:50,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 03:55:50,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 03:55:50,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 03:55:50,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 03:55:50,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 03:55:50,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 03:55:51,268 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 03:55:51,269 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-27 03:55:51,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:55:51 BoogieIcfgContainer [2020-10-27 03:55:51,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 03:55:51,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 03:55:51,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 03:55:51,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 03:55:51,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:55:49" (1/3) ... [2020-10-27 03:55:51,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d46c3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:55:51, skipping insertion in model container [2020-10-27 03:55:51,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:50" (2/3) ... [2020-10-27 03:55:51,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d46c3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:55:51, skipping insertion in model container [2020-10-27 03:55:51,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:55:51" (3/3) ... [2020-10-27 03:55:51,280 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_security.c [2020-10-27 03:55:51,291 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 03:55:51,297 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 03:55:51,314 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 03:55:51,344 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 03:55:51,344 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 03:55:51,344 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 03:55:51,345 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 03:55:51,345 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 03:55:51,345 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 03:55:51,345 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 03:55:51,345 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 03:55:51,365 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2020-10-27 03:55:51,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-27 03:55:51,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:55:51,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:55:51,372 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:55:51,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:55:51,379 INFO L82 PathProgramCache]: Analyzing trace with hash -122925734, now seen corresponding path program 1 times [2020-10-27 03:55:51,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:55:51,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789386035] [2020-10-27 03:55:51,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:55:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:55:51,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:55:51,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:55:51,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 03:55:51,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:55:51,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 03:55:51,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:55:51,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:55:51,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 03:55:51,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:55:51,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 03:55:51,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:55:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:55:51,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:55:51,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:55:51,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:55:51,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:55:51,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 03:55:51,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:55:51,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:55:51,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:55:51,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:55:51,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:55:51,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 03:55:51,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789386035] [2020-10-27 03:55:51,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 03:55:51,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 03:55:51,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470147740] [2020-10-27 03:55:51,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 03:55:51,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:55:51,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 03:55:51,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 03:55:51,807 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 3 states. [2020-10-27 03:55:51,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:55:51,884 INFO L93 Difference]: Finished difference Result 165 states and 304 transitions. [2020-10-27 03:55:51,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 03:55:51,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-27 03:55:51,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:55:51,897 INFO L225 Difference]: With dead ends: 165 [2020-10-27 03:55:51,898 INFO L226 Difference]: Without dead ends: 79 [2020-10-27 03:55:51,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 03:55:51,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-27 03:55:51,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-27 03:55:51,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-27 03:55:51,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 114 transitions. [2020-10-27 03:55:51,958 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 114 transitions. Word has length 14 [2020-10-27 03:55:51,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:55:51,959 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 114 transitions. [2020-10-27 03:55:51,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 03:55:51,959 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 114 transitions. [2020-10-27 03:55:51,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 03:55:51,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:55:51,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:55:51,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 03:55:51,962 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:55:51,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:55:51,963 INFO L82 PathProgramCache]: Analyzing trace with hash -188356260, now seen corresponding path program 1 times [2020-10-27 03:55:51,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:55:51,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206981921] [2020-10-27 03:55:51,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:55:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:55:51,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:55:52,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:55:52,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:55:52,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:55:52,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 03:55:52,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 03:55:52,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-27 03:55:52,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:55:52,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:55:52,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 03:55:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 03:55:52,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 03:55:52,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:55:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:55:52,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:55:52,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:55:52,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:55:52,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:55:52,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 03:55:52,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:55:52,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:55:52,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:55:52,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:55:52,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:55:52,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 03:55:52,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206981921] [2020-10-27 03:55:52,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 03:55:52,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 03:55:52,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087718692] [2020-10-27 03:55:52,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 03:55:52,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:55:52,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 03:55:52,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 03:55:52,418 INFO L87 Difference]: Start difference. First operand 79 states and 114 transitions. Second operand 4 states. [2020-10-27 03:55:52,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:55:52,745 INFO L93 Difference]: Finished difference Result 155 states and 226 transitions. [2020-10-27 03:55:52,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 03:55:52,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-27 03:55:52,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:55:52,748 INFO L225 Difference]: With dead ends: 155 [2020-10-27 03:55:52,748 INFO L226 Difference]: Without dead ends: 82 [2020-10-27 03:55:52,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 03:55:52,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-27 03:55:52,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-10-27 03:55:52,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-27 03:55:52,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 117 transitions. [2020-10-27 03:55:52,765 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 117 transitions. Word has length 15 [2020-10-27 03:55:52,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:55:52,766 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 117 transitions. [2020-10-27 03:55:52,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 03:55:52,766 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 117 transitions. [2020-10-27 03:55:52,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 03:55:52,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:55:52,768 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:55:52,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 03:55:52,768 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:55:52,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:55:52,769 INFO L82 PathProgramCache]: Analyzing trace with hash -812575593, now seen corresponding path program 1 times [2020-10-27 03:55:52,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:55:52,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792281411] [2020-10-27 03:55:52,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:55:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:55:52,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:55:52,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:55:52,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:55:52,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 03:55:52,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 03:55:52,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 03:55:52,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:55:52,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:55:52,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 03:55:52,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 03:55:52,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:55:52,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:55:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:55:52,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:55:52,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:55:52,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:55:52,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:55:52,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 03:55:52,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:55:52,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:55:52,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:55:52,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:55:52,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:55:52,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 03:55:52,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792281411] [2020-10-27 03:55:52,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 03:55:52,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 03:55:52,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622132325] [2020-10-27 03:55:52,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 03:55:52,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:55:52,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 03:55:52,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 03:55:52,990 INFO L87 Difference]: Start difference. First operand 82 states and 117 transitions. Second operand 4 states. [2020-10-27 03:55:53,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:55:53,174 INFO L93 Difference]: Finished difference Result 148 states and 215 transitions. [2020-10-27 03:55:53,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 03:55:53,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-27 03:55:53,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:55:53,178 INFO L225 Difference]: With dead ends: 148 [2020-10-27 03:55:53,178 INFO L226 Difference]: Without dead ends: 73 [2020-10-27 03:55:53,179 INFO L677 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 [2020-10-27 03:55:53,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-27 03:55:53,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-10-27 03:55:53,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-27 03:55:53,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 103 transitions. [2020-10-27 03:55:53,199 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 103 transitions. Word has length 20 [2020-10-27 03:55:53,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:55:53,200 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 103 transitions. [2020-10-27 03:55:53,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 03:55:53,200 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 103 transitions. [2020-10-27 03:55:53,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 03:55:53,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:55:53,202 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:55:53,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 03:55:53,203 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:55:53,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:55:53,203 INFO L82 PathProgramCache]: Analyzing trace with hash -473983135, now seen corresponding path program 1 times [2020-10-27 03:55:53,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:55:53,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579089961] [2020-10-27 03:55:53,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:55:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:55:53,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:55:53,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:55:53,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 03:55:53,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:55:53,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 03:55:53,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:55:53,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:55:53,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 03:55:53,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 03:55:53,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:55:53,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:55:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:55:53,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:55:53,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:55:53,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:55:53,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:55:53,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 03:55:53,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:55:53,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:55:53,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:55:53,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:55:53,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:55:53,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 03:55:53,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579089961] [2020-10-27 03:55:53,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 03:55:53,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 03:55:53,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037397735] [2020-10-27 03:55:53,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 03:55:53,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:55:53,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 03:55:53,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 03:55:53,380 INFO L87 Difference]: Start difference. First operand 73 states and 103 transitions. Second operand 4 states. [2020-10-27 03:55:53,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:55:53,675 INFO L93 Difference]: Finished difference Result 193 states and 282 transitions. [2020-10-27 03:55:53,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 03:55:53,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-27 03:55:53,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:55:53,678 INFO L225 Difference]: With dead ends: 193 [2020-10-27 03:55:53,678 INFO L226 Difference]: Without dead ends: 122 [2020-10-27 03:55:53,679 INFO L677 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 [2020-10-27 03:55:53,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-27 03:55:53,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 109. [2020-10-27 03:55:53,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-27 03:55:53,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 154 transitions. [2020-10-27 03:55:53,693 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 154 transitions. Word has length 23 [2020-10-27 03:55:53,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:55:53,693 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 154 transitions. [2020-10-27 03:55:53,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 03:55:53,694 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 154 transitions. [2020-10-27 03:55:53,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 03:55:53,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:55:53,695 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:55:53,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 03:55:53,695 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:55:53,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:55:53,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1275341081, now seen corresponding path program 1 times [2020-10-27 03:55:53,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:55:53,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040789044] [2020-10-27 03:55:53,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:55:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:55:53,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:55:53,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:55:53,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:55:53,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 03:55:53,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 03:55:53,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 03:55:53,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:55:53,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:55:53,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 03:55:53,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 03:55:53,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:55:53,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:55:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:55:53,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:55:53,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:55:53,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:55:53,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:55:53,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 03:55:53,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:55:53,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:55:53,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:55:53,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:55:53,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:55:53,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 03:55:53,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040789044] [2020-10-27 03:55:53,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 03:55:53,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 03:55:53,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771213726] [2020-10-27 03:55:53,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 03:55:53,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:55:53,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 03:55:53,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 03:55:53,889 INFO L87 Difference]: Start difference. First operand 109 states and 154 transitions. Second operand 4 states. [2020-10-27 03:55:54,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:55:54,133 INFO L93 Difference]: Finished difference Result 190 states and 272 transitions. [2020-10-27 03:55:54,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 03:55:54,134 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-27 03:55:54,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:55:54,136 INFO L225 Difference]: With dead ends: 190 [2020-10-27 03:55:54,136 INFO L226 Difference]: Without dead ends: 93 [2020-10-27 03:55:54,137 INFO L677 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 [2020-10-27 03:55:54,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-27 03:55:54,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2020-10-27 03:55:54,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-27 03:55:54,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 126 transitions. [2020-10-27 03:55:54,156 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 126 transitions. Word has length 24 [2020-10-27 03:55:54,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:55:54,157 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 126 transitions. [2020-10-27 03:55:54,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 03:55:54,157 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 126 transitions. [2020-10-27 03:55:54,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 03:55:54,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:55:54,165 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 03:55:54,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 03:55:54,165 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:55:54,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:55:54,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1079375766, now seen corresponding path program 1 times [2020-10-27 03:55:54,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:55:54,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062926089] [2020-10-27 03:55:54,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:55:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:55:54,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:55:54,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:55:54,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 03:55:54,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:55:54,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 03:55:54,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:55:54,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:55:54,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 03:55:54,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 03:55:54,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:55:54,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:55:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:55:54,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:55:54,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:55:54,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:55:54,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:55:54,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 03:55:54,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:55:54,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:55:54,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:55:54,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:55:54,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:55:54,334 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 03:55:54,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062926089] [2020-10-27 03:55:54,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 03:55:54,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 03:55:54,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657269764] [2020-10-27 03:55:54,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 03:55:54,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:55:54,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 03:55:54,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 03:55:54,340 INFO L87 Difference]: Start difference. First operand 92 states and 126 transitions. Second operand 4 states. [2020-10-27 03:55:54,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:55:54,510 INFO L93 Difference]: Finished difference Result 142 states and 200 transitions. [2020-10-27 03:55:54,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 03:55:54,511 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-27 03:55:54,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:55:54,512 INFO L225 Difference]: With dead ends: 142 [2020-10-27 03:55:54,512 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 03:55:54,513 INFO L677 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 [2020-10-27 03:55:54,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 03:55:54,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-27 03:55:54,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-27 03:55:54,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 101 transitions. [2020-10-27 03:55:54,523 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 101 transitions. Word has length 30 [2020-10-27 03:55:54,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:55:54,523 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 101 transitions. [2020-10-27 03:55:54,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 03:55:54,523 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 101 transitions. [2020-10-27 03:55:54,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 03:55:54,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:55:54,525 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:55:54,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 03:55:54,525 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:55:54,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:55:54,526 INFO L82 PathProgramCache]: Analyzing trace with hash -311961296, now seen corresponding path program 1 times [2020-10-27 03:55:54,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:55:54,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209621288] [2020-10-27 03:55:54,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:55:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:55:54,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:55:54,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:55:54,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 03:55:54,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:55:54,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 03:55:54,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:55:54,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:55:54,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 03:55:54,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 03:55:54,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:55:54,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:55:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:55:54,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:55:54,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:55:54,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:55:54,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:55:54,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 03:55:54,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:55:54,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:55:54,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:55:54,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:55:54,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:55:54,671 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 03:55:54,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209621288] [2020-10-27 03:55:54,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 03:55:54,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 03:55:54,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882526237] [2020-10-27 03:55:54,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 03:55:54,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:55:54,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 03:55:54,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 03:55:54,674 INFO L87 Difference]: Start difference. First operand 74 states and 101 transitions. Second operand 4 states. [2020-10-27 03:55:55,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:55:55,049 INFO L93 Difference]: Finished difference Result 162 states and 234 transitions. [2020-10-27 03:55:55,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 03:55:55,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-27 03:55:55,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:55:55,051 INFO L225 Difference]: With dead ends: 162 [2020-10-27 03:55:55,051 INFO L226 Difference]: Without dead ends: 114 [2020-10-27 03:55:55,052 INFO L677 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 [2020-10-27 03:55:55,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-27 03:55:55,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 103. [2020-10-27 03:55:55,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-27 03:55:55,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 143 transitions. [2020-10-27 03:55:55,063 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 143 transitions. Word has length 31 [2020-10-27 03:55:55,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:55:55,063 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 143 transitions. [2020-10-27 03:55:55,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 03:55:55,063 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 143 transitions. [2020-10-27 03:55:55,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 03:55:55,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:55:55,065 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:55:55,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 03:55:55,065 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:55:55,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:55:55,065 INFO L82 PathProgramCache]: Analyzing trace with hash 235222489, now seen corresponding path program 1 times [2020-10-27 03:55:55,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:55:55,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955875274] [2020-10-27 03:55:55,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:55:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:55:55,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:55:55,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:55:55,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 03:55:55,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:55:55,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 03:55:55,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:55:55,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:55:55,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 03:55:55,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 03:55:55,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:55:55,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:55:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:55:55,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:55:55,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:55:55,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:55:55,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:55:55,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 03:55:55,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:55:55,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:55:55,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:55:55,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:55:55,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:55:55,192 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 03:55:55,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955875274] [2020-10-27 03:55:55,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 03:55:55,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 03:55:55,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459324976] [2020-10-27 03:55:55,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 03:55:55,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:55:55,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 03:55:55,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 03:55:55,194 INFO L87 Difference]: Start difference. First operand 103 states and 143 transitions. Second operand 4 states. [2020-10-27 03:55:55,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:55:55,416 INFO L93 Difference]: Finished difference Result 171 states and 238 transitions. [2020-10-27 03:55:55,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 03:55:55,418 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-27 03:55:55,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:55:55,419 INFO L225 Difference]: With dead ends: 171 [2020-10-27 03:55:55,419 INFO L226 Difference]: Without dead ends: 96 [2020-10-27 03:55:55,420 INFO L677 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 [2020-10-27 03:55:55,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-27 03:55:55,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-27 03:55:55,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-27 03:55:55,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 125 transitions. [2020-10-27 03:55:55,431 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 125 transitions. Word has length 32 [2020-10-27 03:55:55,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:55:55,431 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 125 transitions. [2020-10-27 03:55:55,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 03:55:55,431 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 125 transitions. [2020-10-27 03:55:55,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 03:55:55,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:55:55,433 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:55:55,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 03:55:55,433 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:55:55,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:55:55,434 INFO L82 PathProgramCache]: Analyzing trace with hash 167233998, now seen corresponding path program 1 times [2020-10-27 03:55:55,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:55:55,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340845600] [2020-10-27 03:55:55,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:55:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:55:55,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:55:55,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:55:55,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:55:55,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 03:55:55,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 03:55:55,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 03:55:55,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:55:55,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:55:55,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 03:55:55,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 03:55:55,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:55:55,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:55:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:55:55,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:55:55,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:55:55,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:55:55,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:55:55,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 03:55:55,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:55:55,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:55:55,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:55:55,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:55:55,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:55:55,579 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 03:55:55,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340845600] [2020-10-27 03:55:55,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 03:55:55,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 03:55:55,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808840194] [2020-10-27 03:55:55,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 03:55:55,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:55:55,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 03:55:55,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 03:55:55,582 INFO L87 Difference]: Start difference. First operand 96 states and 125 transitions. Second operand 4 states. [2020-10-27 03:55:55,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:55:55,775 INFO L93 Difference]: Finished difference Result 146 states and 193 transitions. [2020-10-27 03:55:55,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 03:55:55,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-27 03:55:55,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:55:55,776 INFO L225 Difference]: With dead ends: 146 [2020-10-27 03:55:55,776 INFO L226 Difference]: Without dead ends: 78 [2020-10-27 03:55:55,777 INFO L677 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 [2020-10-27 03:55:55,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-27 03:55:55,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-10-27 03:55:55,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-27 03:55:55,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2020-10-27 03:55:55,786 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 32 [2020-10-27 03:55:55,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:55:55,786 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2020-10-27 03:55:55,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 03:55:55,786 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2020-10-27 03:55:55,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-27 03:55:55,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:55:55,787 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:55:55,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 03:55:55,788 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:55:55,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:55:55,788 INFO L82 PathProgramCache]: Analyzing trace with hash -49937851, now seen corresponding path program 1 times [2020-10-27 03:55:55,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:55:55,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38002735] [2020-10-27 03:55:55,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:55:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:55:55,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:55:55,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:55:55,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 03:55:55,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:55:55,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 03:55:55,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:55:55,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:55:55,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 03:55:55,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 03:55:55,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:55:55,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:55:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:55:55,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:55:55,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:55:55,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:55:55,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:55:55,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 03:55:55,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:55:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:55:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:55:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:55:55,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:55:55,966 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 03:55:55,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38002735] [2020-10-27 03:55:55,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 03:55:55,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 03:55:55,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579358184] [2020-10-27 03:55:55,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 03:55:55,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:55:55,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 03:55:55,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 03:55:55,968 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand 4 states. [2020-10-27 03:55:56,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:55:56,215 INFO L93 Difference]: Finished difference Result 81 states and 101 transitions. [2020-10-27 03:55:56,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 03:55:56,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-27 03:55:56,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:55:56,217 INFO L225 Difference]: With dead ends: 81 [2020-10-27 03:55:56,217 INFO L226 Difference]: Without dead ends: 76 [2020-10-27 03:55:56,218 INFO L677 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 [2020-10-27 03:55:56,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-27 03:55:56,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-27 03:55:56,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-27 03:55:56,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 96 transitions. [2020-10-27 03:55:56,227 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 96 transitions. Word has length 33 [2020-10-27 03:55:56,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:55:56,227 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 96 transitions. [2020-10-27 03:55:56,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 03:55:56,227 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 96 transitions. [2020-10-27 03:55:56,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 03:55:56,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:55:56,229 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:55:56,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 03:55:56,229 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:55:56,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:55:56,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1193122916, now seen corresponding path program 1 times [2020-10-27 03:55:56,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:55:56,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964769524] [2020-10-27 03:55:56,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:55:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:55:56,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:55:56,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:55:56,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 03:55:56,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:55:56,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 03:55:56,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:55:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:55:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 03:55:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 03:55:56,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:55:56,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:55:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:55:56,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:55:56,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:55:56,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:55:56,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:55:56,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 03:55:56,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:55:56,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:55:56,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:55:56,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:55:56,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:55:56,357 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 03:55:56,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964769524] [2020-10-27 03:55:56,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 03:55:56,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 03:55:56,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469813135] [2020-10-27 03:55:56,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 03:55:56,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:55:56,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 03:55:56,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 03:55:56,360 INFO L87 Difference]: Start difference. First operand 76 states and 96 transitions. Second operand 4 states. [2020-10-27 03:55:56,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:55:56,556 INFO L93 Difference]: Finished difference Result 119 states and 154 transitions. [2020-10-27 03:55:56,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 03:55:56,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-27 03:55:56,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:55:56,558 INFO L225 Difference]: With dead ends: 119 [2020-10-27 03:55:56,558 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 03:55:56,558 INFO L677 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 [2020-10-27 03:55:56,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 03:55:56,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 03:55:56,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 03:55:56,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 03:55:56,559 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2020-10-27 03:55:56,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:55:56,560 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 03:55:56,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 03:55:56,560 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 03:55:56,560 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 03:55:56,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 03:55:56,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 03:55:56,878 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 20 [2020-10-27 03:55:57,171 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 20 [2020-10-27 03:55:57,176 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-27 03:55:57,176 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-27 03:55:57,177 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-27 03:55:57,177 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-27 03:55:57,177 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 03:55:57,177 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= ~m_update~0 |old(~m_update~0)|) (= ~m_initSign~0 |old(~m_initSign~0)|) (= |old(#length)| |#length|) (= ~m_sign~0 |old(~m_sign~0)|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~m_verify~0 |old(~m_verify~0)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~m_Signature~0 |old(~m_Signature~0)|) (= ~m_initVerify~0 |old(~m_initVerify~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-10-27 03:55:57,177 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 03:55:57,178 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 03:55:57,178 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 03:55:57,178 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 03:55:57,178 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 03:55:57,178 INFO L274 CegarLoopResult]: For program point L250(lines 250 265) no Hoare annotation was computed. [2020-10-27 03:55:57,178 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 15 392) no Hoare annotation was computed. [2020-10-27 03:55:57,178 INFO L274 CegarLoopResult]: For program point L118(lines 118 133) no Hoare annotation was computed. [2020-10-27 03:55:57,179 INFO L274 CegarLoopResult]: For program point L52(lines 52 63) no Hoare annotation was computed. [2020-10-27 03:55:57,179 INFO L274 CegarLoopResult]: For program point L366(lines 366 381) no Hoare annotation was computed. [2020-10-27 03:55:57,179 INFO L274 CegarLoopResult]: For program point L234(lines 234 249) no Hoare annotation was computed. [2020-10-27 03:55:57,179 INFO L274 CegarLoopResult]: For program point L168(lines 168 179) no Hoare annotation was computed. [2020-10-27 03:55:57,179 INFO L274 CegarLoopResult]: For program point L102(lines 102 117) no Hoare annotation was computed. [2020-10-27 03:55:57,179 INFO L274 CegarLoopResult]: For program point L36(lines 36 38) no Hoare annotation was computed. [2020-10-27 03:55:57,179 INFO L270 CegarLoopResult]: At program point L383(lines 24 387) the Hoare annotation is: (let ((.cse0 (<= main_~this_state~0 0))) (or (and .cse0 (= main_~q~0 0)) (and (<= 2 main_~q~0) .cse0 (<= main_~q~0 2)) (and (<= 3 main_~q~0) (= 2 main_~this_state~0) (<= main_~q~0 3)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0)))) [2020-10-27 03:55:57,179 INFO L274 CegarLoopResult]: For program point L350(lines 350 365) no Hoare annotation was computed. [2020-10-27 03:55:57,180 INFO L274 CegarLoopResult]: For program point L218(lines 218 233) no Hoare annotation was computed. [2020-10-27 03:55:57,180 INFO L274 CegarLoopResult]: For program point L185(lines 185 284) no Hoare annotation was computed. [2020-10-27 03:55:57,180 INFO L274 CegarLoopResult]: For program point L152(lines 152 163) no Hoare annotation was computed. [2020-10-27 03:55:57,180 INFO L274 CegarLoopResult]: For program point L334(lines 334 349) no Hoare annotation was computed. [2020-10-27 03:55:57,180 INFO L274 CegarLoopResult]: For program point L268(lines 268 279) no Hoare annotation was computed. [2020-10-27 03:55:57,180 INFO L274 CegarLoopResult]: For program point L202(lines 202 217) no Hoare annotation was computed. [2020-10-27 03:55:57,180 INFO L274 CegarLoopResult]: For program point L136(lines 136 147) no Hoare annotation was computed. [2020-10-27 03:55:57,180 INFO L274 CegarLoopResult]: For program point L318(lines 318 333) no Hoare annotation was computed. [2020-10-27 03:55:57,180 INFO L274 CegarLoopResult]: For program point L285(lines 285 384) no Hoare annotation was computed. [2020-10-27 03:55:57,181 INFO L274 CegarLoopResult]: For program point L252(lines 252 263) no Hoare annotation was computed. [2020-10-27 03:55:57,181 INFO L274 CegarLoopResult]: For program point L186(lines 186 201) no Hoare annotation was computed. [2020-10-27 03:55:57,181 INFO L274 CegarLoopResult]: For program point L120(lines 120 131) no Hoare annotation was computed. [2020-10-27 03:55:57,181 INFO L274 CegarLoopResult]: For program point L368(lines 368 379) no Hoare annotation was computed. [2020-10-27 03:55:57,181 INFO L274 CegarLoopResult]: For program point L302(lines 302 317) no Hoare annotation was computed. [2020-10-27 03:55:57,181 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 15 392) no Hoare annotation was computed. [2020-10-27 03:55:57,181 INFO L274 CegarLoopResult]: For program point L236(lines 236 247) no Hoare annotation was computed. [2020-10-27 03:55:57,181 INFO L274 CegarLoopResult]: For program point L104(lines 104 115) no Hoare annotation was computed. [2020-10-27 03:55:57,181 INFO L274 CegarLoopResult]: For program point L352(lines 352 363) no Hoare annotation was computed. [2020-10-27 03:55:57,181 INFO L274 CegarLoopResult]: For program point L286(lines 286 301) no Hoare annotation was computed. [2020-10-27 03:55:57,182 INFO L274 CegarLoopResult]: For program point L220(lines 220 231) no Hoare annotation was computed. [2020-10-27 03:55:57,182 INFO L274 CegarLoopResult]: For program point L88(lines 88 90) no Hoare annotation was computed. [2020-10-27 03:55:57,182 INFO L274 CegarLoopResult]: For program point L336(lines 336 347) no Hoare annotation was computed. [2020-10-27 03:55:57,182 INFO L274 CegarLoopResult]: For program point L204(lines 204 215) no Hoare annotation was computed. [2020-10-27 03:55:57,182 INFO L274 CegarLoopResult]: For program point L72(lines 72 74) no Hoare annotation was computed. [2020-10-27 03:55:57,182 INFO L274 CegarLoopResult]: For program point L320(lines 320 331) no Hoare annotation was computed. [2020-10-27 03:55:57,182 INFO L274 CegarLoopResult]: For program point L188(lines 188 199) no Hoare annotation was computed. [2020-10-27 03:55:57,182 INFO L274 CegarLoopResult]: For program point L56(lines 56 58) no Hoare annotation was computed. [2020-10-27 03:55:57,182 INFO L274 CegarLoopResult]: For program point L304(lines 304 315) no Hoare annotation was computed. [2020-10-27 03:55:57,183 INFO L274 CegarLoopResult]: For program point L172(lines 172 174) no Hoare annotation was computed. [2020-10-27 03:55:57,183 INFO L274 CegarLoopResult]: For program point L288(lines 288 299) no Hoare annotation was computed. [2020-10-27 03:55:57,183 INFO L274 CegarLoopResult]: For program point L156(lines 156 158) no Hoare annotation was computed. [2020-10-27 03:55:57,183 INFO L270 CegarLoopResult]: At program point L24-2(lines 24 387) the Hoare annotation is: (let ((.cse0 (<= main_~this_state~0 0))) (or (and .cse0 (= main_~q~0 0)) (and (<= 2 main_~q~0) .cse0 (<= main_~q~0 2)) (and (<= 3 main_~q~0) (= 2 main_~this_state~0) (<= main_~q~0 3)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0)))) [2020-10-27 03:55:57,183 INFO L274 CegarLoopResult]: For program point L24-3(lines 24 387) no Hoare annotation was computed. [2020-10-27 03:55:57,183 INFO L274 CegarLoopResult]: For program point L272(lines 272 274) no Hoare annotation was computed. [2020-10-27 03:55:57,183 INFO L274 CegarLoopResult]: For program point L140(lines 140 142) no Hoare annotation was computed. [2020-10-27 03:55:57,184 INFO L274 CegarLoopResult]: For program point L256(lines 256 258) no Hoare annotation was computed. [2020-10-27 03:55:57,184 INFO L274 CegarLoopResult]: For program point L124(lines 124 126) no Hoare annotation was computed. [2020-10-27 03:55:57,184 INFO L274 CegarLoopResult]: For program point L372(lines 372 374) no Hoare annotation was computed. [2020-10-27 03:55:57,184 INFO L274 CegarLoopResult]: For program point L240(lines 240 242) no Hoare annotation was computed. [2020-10-27 03:55:57,184 INFO L274 CegarLoopResult]: For program point L108(lines 108 110) no Hoare annotation was computed. [2020-10-27 03:55:57,184 INFO L274 CegarLoopResult]: For program point L356(lines 356 358) no Hoare annotation was computed. [2020-10-27 03:55:57,184 INFO L274 CegarLoopResult]: For program point L224(lines 224 226) no Hoare annotation was computed. [2020-10-27 03:55:57,184 INFO L270 CegarLoopResult]: At program point L373(lines 15 392) the Hoare annotation is: false [2020-10-27 03:55:57,185 INFO L274 CegarLoopResult]: For program point L340(lines 340 342) no Hoare annotation was computed. [2020-10-27 03:55:57,185 INFO L274 CegarLoopResult]: For program point L208(lines 208 210) no Hoare annotation was computed. [2020-10-27 03:55:57,185 INFO L274 CegarLoopResult]: For program point L324(lines 324 326) no Hoare annotation was computed. [2020-10-27 03:55:57,185 INFO L274 CegarLoopResult]: For program point L192(lines 192 194) no Hoare annotation was computed. [2020-10-27 03:55:57,185 INFO L274 CegarLoopResult]: For program point L308(lines 308 310) no Hoare annotation was computed. [2020-10-27 03:55:57,185 INFO L274 CegarLoopResult]: For program point L391(line 391) no Hoare annotation was computed. [2020-10-27 03:55:57,185 INFO L274 CegarLoopResult]: For program point L292(lines 292 294) no Hoare annotation was computed. [2020-10-27 03:55:57,185 INFO L274 CegarLoopResult]: For program point L29(lines 29 48) no Hoare annotation was computed. [2020-10-27 03:55:57,185 INFO L274 CegarLoopResult]: For program point L30(lines 30 45) no Hoare annotation was computed. [2020-10-27 03:55:57,186 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 15 392) the Hoare annotation is: true [2020-10-27 03:55:57,186 INFO L274 CegarLoopResult]: For program point L32(lines 32 43) no Hoare annotation was computed. [2020-10-27 03:55:57,186 INFO L274 CegarLoopResult]: For program point L82(lines 82 97) no Hoare annotation was computed. [2020-10-27 03:55:57,186 INFO L274 CegarLoopResult]: For program point L49(lines 49 100) no Hoare annotation was computed. [2020-10-27 03:55:57,186 INFO L274 CegarLoopResult]: For program point L66(lines 66 81) no Hoare annotation was computed. [2020-10-27 03:55:57,186 INFO L274 CegarLoopResult]: For program point L50(lines 50 65) no Hoare annotation was computed. [2020-10-27 03:55:57,186 INFO L274 CegarLoopResult]: For program point L166(lines 166 181) no Hoare annotation was computed. [2020-10-27 03:55:57,186 INFO L274 CegarLoopResult]: For program point L150(lines 150 165) no Hoare annotation was computed. [2020-10-27 03:55:57,187 INFO L274 CegarLoopResult]: For program point L84(lines 84 95) no Hoare annotation was computed. [2020-10-27 03:55:57,187 INFO L274 CegarLoopResult]: For program point L266(lines 266 281) no Hoare annotation was computed. [2020-10-27 03:55:57,187 INFO L274 CegarLoopResult]: For program point L134(lines 134 149) no Hoare annotation was computed. [2020-10-27 03:55:57,187 INFO L274 CegarLoopResult]: For program point L101(lines 101 184) no Hoare annotation was computed. [2020-10-27 03:55:57,187 INFO L274 CegarLoopResult]: For program point L68(lines 68 79) no Hoare annotation was computed. [2020-10-27 03:55:57,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:55:57 BoogieIcfgContainer [2020-10-27 03:55:57,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 03:55:57,207 INFO L168 Benchmark]: Toolchain (without parser) took 7353.04 ms. Allocated memory was 151.0 MB in the beginning and 223.3 MB in the end (delta: 72.4 MB). Free memory was 125.9 MB in the beginning and 158.7 MB in the end (delta: -32.8 MB). Peak memory consumption was 123.5 MB. Max. memory is 8.0 GB. [2020-10-27 03:55:57,208 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 03:55:57,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 496.92 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 113.8 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-27 03:55:57,210 INFO L168 Benchmark]: Boogie Preprocessor took 46.98 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 111.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 03:55:57,210 INFO L168 Benchmark]: RCFGBuilder took 863.02 ms. Allocated memory is still 151.0 MB. Free memory was 111.6 MB in the beginning and 117.3 MB in the end (delta: -5.6 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. [2020-10-27 03:55:57,211 INFO L168 Benchmark]: TraceAbstraction took 5932.73 ms. Allocated memory was 151.0 MB in the beginning and 223.3 MB in the end (delta: 72.4 MB). Free memory was 116.7 MB in the beginning and 158.7 MB in the end (delta: -41.9 MB). Peak memory consumption was 112.8 MB. Max. memory is 8.0 GB. [2020-10-27 03:55:57,217 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 496.92 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 113.8 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.98 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 111.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 863.02 ms. Allocated memory is still 151.0 MB. Free memory was 111.6 MB in the beginning and 117.3 MB in the end (delta: -5.6 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5932.73 ms. Allocated memory was 151.0 MB in the beginning and 223.3 MB in the end (delta: 72.4 MB). Free memory was 116.7 MB in the beginning and 158.7 MB in the end (delta: -41.9 MB). Peak memory consumption was 112.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (((this_state <= 0 && q == 0) || ((2 <= q && this_state <= 0) && q <= 2)) || ((3 <= q && 2 == this_state) && q <= 3)) || (4 <= q && 3 == this_state) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (((this_state <= 0 && q == 0) || ((2 <= q && this_state <= 0) && q <= 2)) || ((3 <= q && 2 == this_state) && q <= 3)) || (4 <= q && 3 == this_state) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1005 SDtfs, 1463 SDslu, 73 SDs, 0 SdLazy, 653 SolverSat, 112 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 25 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 18 PreInvPairs, 26 NumberOfFragments, 124 HoareAnnotationTreeSize, 18 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 474 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 288 NumberOfCodeBlocks, 288 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 277 ConstructedInterpolants, 0 QuantifiedInterpolants, 24645 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 55/55 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...