/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 [2020-10-28 15:03:03,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 15:03:03,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 15:03:03,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 15:03:03,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 15:03:03,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 15:03:03,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 15:03:03,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 15:03:03,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 15:03:03,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 15:03:03,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 15:03:03,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 15:03:03,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 15:03:03,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 15:03:03,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 15:03:03,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 15:03:03,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 15:03:03,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 15:03:03,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 15:03:03,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 15:03:03,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 15:03:03,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 15:03:03,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 15:03:03,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 15:03:03,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 15:03:03,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 15:03:03,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 15:03:03,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 15:03:03,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 15:03:03,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 15:03:03,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 15:03:03,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 15:03:03,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 15:03:03,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 15:03:03,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 15:03:03,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 15:03:03,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 15:03:03,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 15:03:03,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 15:03:03,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 15:03:03,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 15:03:03,585 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 [2020-10-28 15:03:03,616 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 15:03:03,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 15:03:03,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 15:03:03,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 15:03:03,621 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 15:03:03,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 15:03:03,622 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 15:03:03,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 15:03:03,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 15:03:03,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 15:03:03,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 15:03:03,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 15:03:03,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 15:03:03,627 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 15:03:03,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 15:03:03,627 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 15:03:03,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 15:03:03,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 15:03:03,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 15:03:03,629 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 15:03:03,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 15:03:03,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 15:03:03,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 15:03:03,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 15:03:03,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 15:03:03,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 15:03:03,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 15:03:03,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 15:03:03,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 15:03:03,632 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 15:03:04,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 15:03:04,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 15:03:04,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 15:03:04,105 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 15:03:04,106 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 15:03:04,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.i [2020-10-28 15:03:04,209 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/088b7b625/7bb8de6683554c3ca1cd6396b2f8f82a/FLAGcc8cef0dc [2020-10-28 15:03:04,839 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 15:03:04,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/jm2006.i [2020-10-28 15:03:04,848 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/088b7b625/7bb8de6683554c3ca1cd6396b2f8f82a/FLAGcc8cef0dc [2020-10-28 15:03:05,199 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/088b7b625/7bb8de6683554c3ca1cd6396b2f8f82a [2020-10-28 15:03:05,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 15:03:05,213 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 15:03:05,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 15:03:05,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 15:03:05,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 15:03:05,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:03:05" (1/1) ... [2020-10-28 15:03:05,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a28708d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:03:05, skipping insertion in model container [2020-10-28 15:03:05,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:03:05" (1/1) ... [2020-10-28 15:03:05,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 15:03:05,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 15:03:05,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:03:05,489 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 15:03:05,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:03:05,528 INFO L208 MainTranslator]: Completed translation [2020-10-28 15:03:05,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:03:05 WrapperNode [2020-10-28 15:03:05,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 15:03:05,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 15:03:05,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 15:03:05,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 15:03:05,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:03:05" (1/1) ... [2020-10-28 15:03:05,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:03:05" (1/1) ... [2020-10-28 15:03:05,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:03:05" (1/1) ... [2020-10-28 15:03:05,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:03:05" (1/1) ... [2020-10-28 15:03:05,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:03:05" (1/1) ... [2020-10-28 15:03:05,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:03:05" (1/1) ... [2020-10-28 15:03:05,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:03:05" (1/1) ... [2020-10-28 15:03:05,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 15:03:05,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 15:03:05,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 15:03:05,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 15:03:05,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:03:05" (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 [2020-10-28 15:03:05,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 15:03:05,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 15:03:05,666 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 15:03:05,667 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 15:03:05,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 15:03:05,667 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 15:03:05,667 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 15:03:05,668 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 15:03:05,668 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 15:03:05,668 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 15:03:05,669 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 15:03:05,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 15:03:05,669 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 15:03:05,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 15:03:05,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 15:03:05,671 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 15:03:05,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 15:03:05,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 15:03:05,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 15:03:05,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 15:03:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 15:03:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 15:03:06,202 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 15:03:06,202 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 15:03:06,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:03:06 BoogieIcfgContainer [2020-10-28 15:03:06,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 15:03:06,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 15:03:06,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 15:03:06,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 15:03:06,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 03:03:05" (1/3) ... [2020-10-28 15:03:06,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45afa8e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:03:06, skipping insertion in model container [2020-10-28 15:03:06,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:03:05" (2/3) ... [2020-10-28 15:03:06,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45afa8e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:03:06, skipping insertion in model container [2020-10-28 15:03:06,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:03:06" (3/3) ... [2020-10-28 15:03:06,220 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006.i [2020-10-28 15:03:06,232 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 15:03:06,237 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 15:03:06,252 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 15:03:06,291 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 15:03:06,291 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 15:03:06,291 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 15:03:06,291 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 15:03:06,291 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 15:03:06,292 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 15:03:06,292 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 15:03:06,292 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 15:03:06,311 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-28 15:03:06,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 15:03:06,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:03:06,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:03:06,319 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:03:06,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:03:06,326 INFO L82 PathProgramCache]: Analyzing trace with hash -245613270, now seen corresponding path program 1 times [2020-10-28 15:03:06,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:03:06,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680912573] [2020-10-28 15:03:06,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:03:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:03:06,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:03:06,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:03:06,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 15:03:06,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:03:06,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 15:03:06,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:03:06,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:03:06,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:03:06,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 15:03:06,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:03:06,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 15:03:06,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:03:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:03:06,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:03:06,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:03:06,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:03:06,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:03:06,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 15:03:06,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:03:06,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:03:06,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:03:06,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:03:06,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:03:06,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:03:06,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:03:06,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680912573] [2020-10-28 15:03:06,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:03:06,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 15:03:06,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851841216] [2020-10-28 15:03:06,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 15:03:06,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:03:06,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 15:03:06,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 15:03:06,821 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-10-28 15:03:06,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:03:06,906 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-10-28 15:03:06,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 15:03:06,909 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-28 15:03:06,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:03:06,918 INFO L225 Difference]: With dead ends: 41 [2020-10-28 15:03:06,918 INFO L226 Difference]: Without dead ends: 16 [2020-10-28 15:03:06,922 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 [2020-10-28 15:03:06,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-28 15:03:06,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-28 15:03:06,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-28 15:03:06,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-28 15:03:06,966 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 15 [2020-10-28 15:03:06,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:03:06,967 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-28 15:03:06,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 15:03:06,967 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-28 15:03:06,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 15:03:06,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:03:06,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:03:06,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 15:03:06,969 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:03:06,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:03:06,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1373079982, now seen corresponding path program 1 times [2020-10-28 15:03:06,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:03:06,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335682702] [2020-10-28 15:03:06,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:03:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:03:07,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:03:07,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:03:07,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 15:03:07,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:03:07,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-28 15:03:07,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:03:07,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:03:07,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:03:07,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:03:07,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 15:03:07,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:03:07,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:03:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:03:07,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:03:07,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:03:07,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:03:07,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:03:07,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 15:03:07,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:03:07,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:03:07,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:03:07,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:03:07,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:03:07,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:03:07,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:03:07,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335682702] [2020-10-28 15:03:07,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:03:07,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 15:03:07,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490878247] [2020-10-28 15:03:07,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 15:03:07,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:03:07,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 15:03:07,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:03:07,650 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 8 states. [2020-10-28 15:03:08,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:03:08,173 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-10-28 15:03:08,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 15:03:08,174 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-28 15:03:08,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:03:08,175 INFO L225 Difference]: With dead ends: 25 [2020-10-28 15:03:08,175 INFO L226 Difference]: Without dead ends: 17 [2020-10-28 15:03:08,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-28 15:03:08,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-28 15:03:08,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-28 15:03:08,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-28 15:03:08,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-10-28 15:03:08,184 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2020-10-28 15:03:08,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:03:08,184 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-10-28 15:03:08,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 15:03:08,185 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-10-28 15:03:08,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 15:03:08,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:03:08,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:03:08,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 15:03:08,186 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:03:08,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:03:08,187 INFO L82 PathProgramCache]: Analyzing trace with hash 612327496, now seen corresponding path program 1 times [2020-10-28 15:03:08,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:03:08,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118245265] [2020-10-28 15:03:08,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:03:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:03:08,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:03:08,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:03:08,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 15:03:08,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:03:08,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-28 15:03:08,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:03:08,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:03:08,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:03:08,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:03:08,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 15:03:08,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:03:08,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:03:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:03:08,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:03:08,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:03:08,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:03:08,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:03:08,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:03:08,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:03:08,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:03:08,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:03:08,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:03:08,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:03:08,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:03:08,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:03:08,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118245265] [2020-10-28 15:03:08,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:03:08,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 15:03:08,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020858626] [2020-10-28 15:03:08,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 15:03:08,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:03:08,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 15:03:08,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:03:08,698 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2020-10-28 15:03:09,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:03:09,099 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-10-28 15:03:09,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 15:03:09,099 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-10-28 15:03:09,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:03:09,100 INFO L225 Difference]: With dead ends: 26 [2020-10-28 15:03:09,100 INFO L226 Difference]: Without dead ends: 18 [2020-10-28 15:03:09,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-28 15:03:09,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-28 15:03:09,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-28 15:03:09,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-28 15:03:09,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-10-28 15:03:09,108 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2020-10-28 15:03:09,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:03:09,108 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-10-28 15:03:09,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 15:03:09,109 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-10-28 15:03:09,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-28 15:03:09,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:03:09,110 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:03:09,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 15:03:09,110 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:03:09,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:03:09,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1496163090, now seen corresponding path program 2 times [2020-10-28 15:03:09,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:03:09,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198380731] [2020-10-28 15:03:09,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:03:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:03:09,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:03:09,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:03:09,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 15:03:09,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:03:09,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-28 15:03:09,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:03:09,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:03:09,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 15:03:09,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:03:09,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 15:03:09,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:03:09,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:03:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:03:09,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:03:09,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:03:09,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:03:09,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:03:09,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:03:09,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:03:09,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:03:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:03:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:03:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:03:09,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:03:09,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:03:09,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198380731] [2020-10-28 15:03:09,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:03:09,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 15:03:09,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052859068] [2020-10-28 15:03:09,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 15:03:09,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:03:09,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 15:03:09,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:03:09,506 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 10 states. [2020-10-28 15:03:09,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:03:09,870 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-10-28 15:03:09,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 15:03:09,871 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-28 15:03:09,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:03:09,872 INFO L225 Difference]: With dead ends: 27 [2020-10-28 15:03:09,872 INFO L226 Difference]: Without dead ends: 19 [2020-10-28 15:03:09,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-28 15:03:09,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-28 15:03:09,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-28 15:03:09,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-28 15:03:09,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-28 15:03:09,879 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2020-10-28 15:03:09,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:03:09,879 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-28 15:03:09,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 15:03:09,879 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-28 15:03:09,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-28 15:03:09,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:03:09,880 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:03:09,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 15:03:09,881 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:03:09,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:03:09,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1860105480, now seen corresponding path program 3 times [2020-10-28 15:03:09,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:03:09,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247735278] [2020-10-28 15:03:09,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:03:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:03:09,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:03:10,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:03:10,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 15:03:10,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:03:10,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-28 15:03:10,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:03:10,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:03:10,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 15:03:10,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:03:10,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 15:03:10,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:03:10,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:03:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:03:10,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:03:10,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:03:10,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:03:10,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:03:10,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:03:10,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:03:10,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:03:10,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:03:10,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:03:10,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:03:10,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:03:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:03:10,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247735278] [2020-10-28 15:03:10,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:03:10,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 15:03:10,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629415662] [2020-10-28 15:03:10,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 15:03:10,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:03:10,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 15:03:10,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:03:10,306 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 11 states. [2020-10-28 15:03:10,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:03:10,696 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-10-28 15:03:10,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 15:03:10,696 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-10-28 15:03:10,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:03:10,697 INFO L225 Difference]: With dead ends: 19 [2020-10-28 15:03:10,697 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 15:03:10,698 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 [2020-10-28 15:03:10,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 15:03:10,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 15:03:10,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 15:03:10,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 15:03:10,699 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-28 15:03:10,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:03:10,700 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 15:03:10,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 15:03:10,700 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 15:03:10,700 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 15:03:10,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 15:03:10,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 15:03:10,904 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-28 15:03:10,905 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-28 15:03:10,905 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-28 15:03:10,905 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-28 15:03:10,905 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-28 15:03:10,905 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 15:03:10,906 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)|)) [2020-10-28 15:03:10,906 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 15:03:10,906 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 15:03:10,906 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 15:03:10,906 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 15:03:10,906 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 15:03:10,906 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-28 15:03:10,907 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-28 15:03:10,907 INFO L274 CegarLoopResult]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2020-10-28 15:03:10,907 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-28 15:03:10,907 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 39) the Hoare annotation is: true [2020-10-28 15:03:10,907 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))) [2020-10-28 15:03:10,907 INFO L274 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-10-28 15:03:10,907 INFO L274 CegarLoopResult]: For program point L31-3(lines 24 39) no Hoare annotation was computed. [2020-10-28 15:03:10,908 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 24 39) no Hoare annotation was computed. [2020-10-28 15:03:10,908 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 24 39) no Hoare annotation was computed. [2020-10-28 15:03:10,908 INFO L270 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (= main_~y~0 0) [2020-10-28 15:03:10,908 INFO L274 CegarLoopResult]: For program point L35(lines 35 37) no Hoare annotation was computed. [2020-10-28 15:03:10,908 INFO L274 CegarLoopResult]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2020-10-28 15:03:10,908 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-28 15:03:10,908 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2020-10-28 15:03:10,909 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-28 15:03:10,909 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-28 15:03:10,909 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-28 15:03:10,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 03:03:10 BoogieIcfgContainer [2020-10-28 15:03:10,927 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 15:03:10,930 INFO L168 Benchmark]: Toolchain (without parser) took 5723.26 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.1 MB in the beginning and 111.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 47.5 MB. Max. memory is 8.0 GB. [2020-10-28 15:03:10,931 INFO L168 Benchmark]: CDTParser took 0.75 ms. Allocated memory is still 125.8 MB. Free memory is still 85.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 15:03:10,932 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.15 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 117.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 15:03:10,933 INFO L168 Benchmark]: Boogie Preprocessor took 41.31 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 115.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 15:03:10,934 INFO L168 Benchmark]: RCFGBuilder took 633.16 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 101.4 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-28 15:03:10,935 INFO L168 Benchmark]: TraceAbstraction took 4716.99 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 100.9 MB in the beginning and 111.0 MB in the end (delta: -10.1 MB). Peak memory consumption was 21.3 MB. Max. memory is 8.0 GB. [2020-10-28 15:03:10,939 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.75 ms. Allocated memory is still 125.8 MB. Free memory is still 85.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 312.15 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 117.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.31 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 115.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 633.16 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 101.4 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4716.99 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 100.9 MB in the beginning and 111.0 MB in the end (delta: -10.1 MB). Peak memory consumption was 21.3 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: 4.4s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 63 SDtfs, 71 SDslu, 138 SDs, 0 SdLazy, 244 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.0s 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, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 359 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.2s 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...