/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/loop-lit/jm2006.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:44:34,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:44:34,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:44:34,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:44:34,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:44:34,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:44:34,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:44:34,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:44:34,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:44:34,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:44:34,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:44:34,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:44:34,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:44:34,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:44:34,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:44:34,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:44:34,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:44:34,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:44:34,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:44:34,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:44:34,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:44:34,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:44:34,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:44:34,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:44:34,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:44:34,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:44:34,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:44:34,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:44:34,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:44:34,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:44:34,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:44:34,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:44:34,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:44:34,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:44:34,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:44:34,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:44:34,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:44:34,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:44:34,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:44:34,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:44:34,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:44:34,481 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 [2020-10-29 09:44:34,513 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:44:34,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:44:34,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:44:34,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:44:34,516 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:44:34,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:44:34,516 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:44:34,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:44:34,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:44:34,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:44:34,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:44:34,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:44:34,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:44:34,517 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:44:34,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:44:34,518 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:44:34,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:44:34,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:44:34,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:44:34,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:44:34,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:44:34,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:44:34,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:44:34,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:44:34,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:44:34,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:44:34,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:44:34,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:44:34,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:44:34,521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:44:34,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:44:34,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:44:34,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:44:34,966 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:44:34,967 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:44:34,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.i [2020-10-29 09:44:35,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d4a7ce02/c46ae15b409f462c9b660d37ff860113/FLAG70ada5cb5 [2020-10-29 09:44:35,785 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:44:35,786 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/jm2006.i [2020-10-29 09:44:35,796 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d4a7ce02/c46ae15b409f462c9b660d37ff860113/FLAG70ada5cb5 [2020-10-29 09:44:36,139 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d4a7ce02/c46ae15b409f462c9b660d37ff860113 [2020-10-29 09:44:36,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:44:36,150 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:44:36,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:44:36,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:44:36,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:44:36,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:44:36" (1/1) ... [2020-10-29 09:44:36,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a13bab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:44:36, skipping insertion in model container [2020-10-29 09:44:36,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:44:36" (1/1) ... [2020-10-29 09:44:36,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:44:36,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:44:36,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:44:36,374 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:44:36,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:44:36,425 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:44:36,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:44:36 WrapperNode [2020-10-29 09:44:36,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:44:36,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:44:36,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:44:36,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:44:36,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:44:36" (1/1) ... [2020-10-29 09:44:36,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:44:36" (1/1) ... [2020-10-29 09:44:36,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:44:36" (1/1) ... [2020-10-29 09:44:36,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:44:36" (1/1) ... [2020-10-29 09:44:36,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:44:36" (1/1) ... [2020-10-29 09:44:36,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:44:36" (1/1) ... [2020-10-29 09:44:36,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:44:36" (1/1) ... [2020-10-29 09:44:36,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:44:36,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:44:36,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:44:36,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:44:36,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:44:36" (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 [2020-10-29 09:44:36,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:44:36,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:44:36,690 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:44:36,691 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 09:44:36,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 09:44:36,692 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:44:36,692 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:44:36,693 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:44:36,694 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:44:36,694 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:44:36,695 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:44:36,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:44:36,696 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 09:44:36,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:44:36,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 09:44:36,698 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:44:36,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:44:36,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:44:36,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:44:36,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:44:36,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:44:36,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:44:37,213 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:44:37,214 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 09:44:37,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:44:37 BoogieIcfgContainer [2020-10-29 09:44:37,216 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:44:37,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:44:37,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:44:37,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:44:37,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:44:36" (1/3) ... [2020-10-29 09:44:37,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd17503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:44:37, skipping insertion in model container [2020-10-29 09:44:37,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:44:36" (2/3) ... [2020-10-29 09:44:37,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd17503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:44:37, skipping insertion in model container [2020-10-29 09:44:37,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:44:37" (3/3) ... [2020-10-29 09:44:37,228 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006.i [2020-10-29 09:44:37,240 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:44:37,245 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:44:37,256 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:44:37,285 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:44:37,285 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:44:37,285 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:44:37,286 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:44:37,286 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:44:37,286 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:44:37,286 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:44:37,286 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:44:37,305 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-29 09:44:37,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 09:44:37,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:44:37,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:44:37,313 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:44:37,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:44:37,320 INFO L82 PathProgramCache]: Analyzing trace with hash -245613270, now seen corresponding path program 1 times [2020-10-29 09:44:37,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:44:37,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8460704] [2020-10-29 09:44:37,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:44:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:44:37,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:37,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:44:37,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 09:44:37,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:44:37,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-29 09:44:37,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:44:37,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:44:37,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:44:37,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 09:44:37,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:44:37,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:44:37,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:44:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:44:37,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:37,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:44:37,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:44:37,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:44:37,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 09:44:37,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:44:37,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:44:37,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:44:37,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:44:37,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:44:37,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:44:37,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:44:37,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8460704] [2020-10-29 09:44:37,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:44:37,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 09:44:37,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166842715] [2020-10-29 09:44:37,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-29 09:44:37,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:44:37,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-29 09:44:37,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 09:44:37,817 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-10-29 09:44:37,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:44:37,883 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-10-29 09:44:37,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:44:37,885 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-29 09:44:37,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:44:37,893 INFO L225 Difference]: With dead ends: 41 [2020-10-29 09:44:37,894 INFO L226 Difference]: Without dead ends: 16 [2020-10-29 09:44:37,897 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 [2020-10-29 09:44:37,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-29 09:44:37,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-29 09:44:37,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-29 09:44:37,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-29 09:44:37,935 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 15 [2020-10-29 09:44:37,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:44:37,935 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-29 09:44:37,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-29 09:44:37,936 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-29 09:44:37,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 09:44:37,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:44:37,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:44:37,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:44:37,937 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:44:37,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:44:37,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1373079982, now seen corresponding path program 1 times [2020-10-29 09:44:37,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:44:37,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383855777] [2020-10-29 09:44:37,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:44:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:44:37,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:38,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:44:38,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 09:44:38,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:44:38,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-29 09:44:38,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:44:38,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:44:38,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:44:38,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:44:38,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:44:38,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:44:38,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:44:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:44:38,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:38,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:44:38,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:44:38,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:44:38,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:44:38,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:44:38,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:44:38,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:44:38,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:44:38,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:44:38,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:44:38,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:44:38,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383855777] [2020-10-29 09:44:38,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:44:38,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 09:44:38,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945148818] [2020-10-29 09:44:38,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:44:38,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:44:38,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:44:38,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:44:38,513 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 8 states. [2020-10-29 09:44:38,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:44:38,875 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-10-29 09:44:38,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:44:38,875 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-29 09:44:38,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:44:38,876 INFO L225 Difference]: With dead ends: 25 [2020-10-29 09:44:38,877 INFO L226 Difference]: Without dead ends: 17 [2020-10-29 09:44:38,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:44:38,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-29 09:44:38,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-29 09:44:38,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-29 09:44:38,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-10-29 09:44:38,886 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2020-10-29 09:44:38,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:44:38,887 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-10-29 09:44:38,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:44:38,887 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-10-29 09:44:38,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-29 09:44:38,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:44:38,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:44:38,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:44:38,888 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:44:38,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:44:38,889 INFO L82 PathProgramCache]: Analyzing trace with hash 612327496, now seen corresponding path program 1 times [2020-10-29 09:44:38,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:44:38,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274117684] [2020-10-29 09:44:38,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:44:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:44:38,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:39,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:44:39,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 09:44:39,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:44:39,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-29 09:44:39,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:44:39,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:44:39,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:44:39,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:44:39,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:44:39,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:44:39,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:44:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:44:39,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:39,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:44:39,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:44:39,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:44:39,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 09:44:39,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:44:39,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:44:39,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:44:39,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:44:39,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:44:39,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:44:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:44:39,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274117684] [2020-10-29 09:44:39,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:44:39,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:44:39,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190222181] [2020-10-29 09:44:39,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:44:39,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:44:39,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:44:39,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:44:39,437 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2020-10-29 09:44:39,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:44:39,927 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-10-29 09:44:39,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:44:39,928 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-10-29 09:44:39,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:44:39,929 INFO L225 Difference]: With dead ends: 26 [2020-10-29 09:44:39,929 INFO L226 Difference]: Without dead ends: 18 [2020-10-29 09:44:39,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:44:39,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-29 09:44:39,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-29 09:44:39,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-29 09:44:39,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-10-29 09:44:39,936 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2020-10-29 09:44:39,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:44:39,937 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-10-29 09:44:39,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:44:39,937 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-10-29 09:44:39,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-29 09:44:39,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:44:39,938 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:44:39,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:44:39,938 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:44:39,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:44:39,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1496163090, now seen corresponding path program 2 times [2020-10-29 09:44:39,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:44:39,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522780254] [2020-10-29 09:44:39,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:44:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:44:39,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:40,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:44:40,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 09:44:40,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:44:40,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-29 09:44:40,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:44:40,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:44:40,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:44:40,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:44:40,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:44:40,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:44:40,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:44:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:44:40,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:40,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:44:40,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:44:40,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:44:40,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:44:40,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:44:40,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:44:40,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:44:40,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:44:40,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:44:40,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:44:40,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:44:40,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522780254] [2020-10-29 09:44:40,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:44:40,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:44:40,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565254778] [2020-10-29 09:44:40,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:44:40,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:44:40,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:44:40,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:44:40,284 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 10 states. [2020-10-29 09:44:40,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:44:40,602 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-10-29 09:44:40,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:44:40,602 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-29 09:44:40,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:44:40,603 INFO L225 Difference]: With dead ends: 27 [2020-10-29 09:44:40,603 INFO L226 Difference]: Without dead ends: 19 [2020-10-29 09:44:40,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:44:40,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-29 09:44:40,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-29 09:44:40,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-29 09:44:40,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-29 09:44:40,610 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2020-10-29 09:44:40,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:44:40,611 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-29 09:44:40,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:44:40,611 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-29 09:44:40,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 09:44:40,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:44:40,612 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:44:40,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:44:40,612 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:44:40,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:44:40,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1860105480, now seen corresponding path program 3 times [2020-10-29 09:44:40,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:44:40,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952468481] [2020-10-29 09:44:40,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:44:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:44:40,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:40,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:44:40,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 09:44:40,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:44:40,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-29 09:44:40,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:44:40,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:44:40,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:44:40,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:44:40,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 09:44:40,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:44:40,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:44:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:44:40,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:40,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:44:40,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:44:40,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:44:40,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:44:40,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:44:40,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:44:40,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:44:40,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:44:40,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:44:40,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:44:40,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:44:40,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952468481] [2020-10-29 09:44:40,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:44:40,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:44:40,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929139619] [2020-10-29 09:44:40,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:44:40,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:44:40,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:44:40,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:44:40,998 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 11 states. [2020-10-29 09:44:41,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:44:41,369 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-10-29 09:44:41,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:44:41,369 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-10-29 09:44:41,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:44:41,370 INFO L225 Difference]: With dead ends: 19 [2020-10-29 09:44:41,370 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 09:44:41,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:44:41,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 09:44:41,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 09:44:41,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 09:44:41,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 09:44:41,372 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-29 09:44:41,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:44:41,373 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 09:44:41,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:44:41,373 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 09:44:41,373 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 09:44:41,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:44:41,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 09:44:41,706 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-29 09:44:41,706 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-29 09:44:41,706 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-29 09:44:41,706 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-29 09:44:41,707 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-29 09:44:41,707 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:44:41,707 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-29 09:44:41,707 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:44:41,707 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:44:41,707 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-29 09:44:41,707 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-29 09:44:41,708 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:44:41,708 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-29 09:44:41,708 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-29 09:44:41,708 INFO L274 CegarLoopResult]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2020-10-29 09:44:41,708 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-29 09:44:41,708 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 39) the Hoare annotation is: true [2020-10-29 09:44:41,708 INFO L270 CegarLoopResult]: At program point L31-2(lines 31 34) the Hoare annotation is: (let ((.cse1 (+ main_~y~0 main_~i~0)) (.cse0 (+ main_~x~0 main_~j~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-10-29 09:44:41,709 INFO L274 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-10-29 09:44:41,709 INFO L274 CegarLoopResult]: For program point L31-3(lines 24 39) no Hoare annotation was computed. [2020-10-29 09:44:41,709 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 24 39) no Hoare annotation was computed. [2020-10-29 09:44:41,709 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 24 39) no Hoare annotation was computed. [2020-10-29 09:44:41,709 INFO L270 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (= main_~y~0 0) [2020-10-29 09:44:41,709 INFO L274 CegarLoopResult]: For program point L35(lines 35 37) no Hoare annotation was computed. [2020-10-29 09:44:41,709 INFO L274 CegarLoopResult]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2020-10-29 09:44:41,710 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-29 09:44:41,710 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2020-10-29 09:44:41,710 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-29 09:44:41,710 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-29 09:44:41,710 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-29 09:44:41,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:44:41 BoogieIcfgContainer [2020-10-29 09:44:41,728 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:44:41,731 INFO L168 Benchmark]: Toolchain (without parser) took 5585.51 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 137.3 MB in the beginning and 166.9 MB in the end (delta: -29.6 MB). Peak memory consumption was 108.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:44:41,732 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 155.2 MB. Free memory was 128.1 MB in the beginning and 128.1 MB in the end (delta: 76.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:44:41,733 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.05 ms. Allocated memory is still 155.2 MB. Free memory was 136.6 MB in the beginning and 126.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:44:41,734 INFO L168 Benchmark]: Boogie Preprocessor took 117.09 ms. Allocated memory is still 155.2 MB. Free memory was 126.7 MB in the beginning and 139.0 MB in the end (delta: -12.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. [2020-10-29 09:44:41,735 INFO L168 Benchmark]: RCFGBuilder took 669.74 ms. Allocated memory is still 155.2 MB. Free memory was 138.8 MB in the beginning and 125.0 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:44:41,736 INFO L168 Benchmark]: TraceAbstraction took 4509.83 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 124.4 MB in the beginning and 166.9 MB in the end (delta: -42.5 MB). Peak memory consumption was 96.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:44:41,740 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 155.2 MB. Free memory was 128.1 MB in the beginning and 128.1 MB in the end (delta: 76.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 275.05 ms. Allocated memory is still 155.2 MB. Free memory was 136.6 MB in the beginning and 126.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 117.09 ms. Allocated memory is still 155.2 MB. Free memory was 126.7 MB in the beginning and 139.0 MB in the end (delta: -12.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 669.74 ms. Allocated memory is still 155.2 MB. Free memory was 138.8 MB in the beginning and 125.0 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4509.83 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 124.4 MB in the beginning and 166.9 MB in the end (delta: -42.5 MB). Peak memory consumption was 96.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 31]: Loop Invariant Derived loop invariant: x + j <= y + i && y + i <= x + j - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 63 SDtfs, 71 SDslu, 138 SDs, 0 SdLazy, 244 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 21 PreInvPairs, 28 NumberOfFragments, 51 HoareAnnotationTreeSize, 21 FomulaSimplifications, 97 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 359 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 7631 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/10 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...