/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-invgen/id_build.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 15:01:19,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 15:01:19,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 15:01:19,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 15:01:19,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 15:01:19,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 15:01:19,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 15:01:19,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 15:01:19,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 15:01:19,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 15:01:19,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 15:01:19,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 15:01:19,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 15:01:19,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 15:01:19,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 15:01:19,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 15:01:19,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 15:01:19,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 15:01:19,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 15:01:19,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 15:01:19,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 15:01:19,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 15:01:19,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 15:01:19,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 15:01:19,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 15:01:19,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 15:01:19,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 15:01:19,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 15:01:19,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 15:01:19,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 15:01:19,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 15:01:19,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 15:01:19,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 15:01:19,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 15:01:19,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 15:01:19,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 15:01:19,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 15:01:19,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 15:01:19,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 15:01:19,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 15:01:19,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 15:01:19,536 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 15:01:19,564 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 15:01:19,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 15:01:19,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 15:01:19,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 15:01:19,567 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 15:01:19,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 15:01:19,567 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 15:01:19,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 15:01:19,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 15:01:19,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 15:01:19,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 15:01:19,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 15:01:19,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 15:01:19,569 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 15:01:19,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 15:01:19,569 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 15:01:19,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 15:01:19,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 15:01:19,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 15:01:19,570 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 15:01:19,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 15:01:19,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 15:01:19,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 15:01:19,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 15:01:19,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 15:01:19,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 15:01:19,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 15:01:19,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 15:01:19,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 15:01:19,573 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 15:01:19,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 15:01:20,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 15:01:20,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 15:01:20,031 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 15:01:20,032 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 15:01:20,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2020-10-28 15:01:20,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2d6b0e58/fb9633bca1a641d0a9680cb8d499dc66/FLAG21cc4868a [2020-10-28 15:01:20,809 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 15:01:20,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2020-10-28 15:01:20,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2d6b0e58/fb9633bca1a641d0a9680cb8d499dc66/FLAG21cc4868a [2020-10-28 15:01:21,159 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2d6b0e58/fb9633bca1a641d0a9680cb8d499dc66 [2020-10-28 15:01:21,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 15:01:21,174 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 15:01:21,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 15:01:21,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 15:01:21,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 15:01:21,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:01:21" (1/1) ... [2020-10-28 15:01:21,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193924e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:21, skipping insertion in model container [2020-10-28 15:01:21,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:01:21" (1/1) ... [2020-10-28 15:01:21,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 15:01:21,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 15:01:21,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:01:21,524 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 15:01:21,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:01:21,603 INFO L208 MainTranslator]: Completed translation [2020-10-28 15:01:21,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:21 WrapperNode [2020-10-28 15:01:21,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 15:01:21,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 15:01:21,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 15:01:21,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 15:01:21,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:21" (1/1) ... [2020-10-28 15:01:21,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:21" (1/1) ... [2020-10-28 15:01:21,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:21" (1/1) ... [2020-10-28 15:01:21,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:21" (1/1) ... [2020-10-28 15:01:21,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:21" (1/1) ... [2020-10-28 15:01:21,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:21" (1/1) ... [2020-10-28 15:01:21,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:21" (1/1) ... [2020-10-28 15:01:21,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 15:01:21,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 15:01:21,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 15:01:21,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 15:01:21,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:21" (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 15:01:21,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 15:01:21,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 15:01:21,778 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 15:01:21,778 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 15:01:21,779 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 15:01:21,779 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 15:01:21,779 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 15:01:21,779 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 15:01:21,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 15:01:21,779 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 15:01:21,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 15:01:21,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 15:01:21,780 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 15:01:21,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 15:01:21,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 15:01:21,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 15:01:21,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 15:01:21,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 15:01:21,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 15:01:22,107 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 15:01:22,108 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 15:01:22,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:01:22 BoogieIcfgContainer [2020-10-28 15:01:22,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 15:01:22,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 15:01:22,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 15:01:22,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 15:01:22,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 03:01:21" (1/3) ... [2020-10-28 15:01:22,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf21ee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:01:22, skipping insertion in model container [2020-10-28 15:01:22,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:21" (2/3) ... [2020-10-28 15:01:22,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf21ee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:01:22, skipping insertion in model container [2020-10-28 15:01:22,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:01:22" (3/3) ... [2020-10-28 15:01:22,121 INFO L111 eAbstractionObserver]: Analyzing ICFG id_build.i.v+lhb-reducer.c [2020-10-28 15:01:22,155 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 15:01:22,161 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 15:01:22,176 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 15:01:22,227 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 15:01:22,227 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 15:01:22,228 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 15:01:22,228 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 15:01:22,228 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 15:01:22,228 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 15:01:22,228 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 15:01:22,229 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 15:01:22,256 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-28 15:01:22,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-28 15:01:22,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:01:22,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:01:22,269 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:01:22,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:01:22,283 INFO L82 PathProgramCache]: Analyzing trace with hash -337312338, now seen corresponding path program 1 times [2020-10-28 15:01:22,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:01:22,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671796578] [2020-10-28 15:01:22,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:01:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:22,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:22,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:22,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 15:01:22,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:22,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-28 15:01:22,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:22,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:22,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:01:22,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:01:22,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 15:01:22,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 15:01:23,065 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-10-28 15:01:23,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:01:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:23,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:23,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:23,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:01:23,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:23,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 15:01:23,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:23,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:23,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:01:23,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:23,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:01:23,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:01:23,149 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 15:01:23,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671796578] [2020-10-28 15:01:23,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:01:23,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 15:01:23,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042900481] [2020-10-28 15:01:23,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 15:01:23,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:01:23,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 15:01:23,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:01:23,185 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2020-10-28 15:01:23,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:01:23,461 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2020-10-28 15:01:23,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 15:01:23,464 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-28 15:01:23,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:01:23,474 INFO L225 Difference]: With dead ends: 36 [2020-10-28 15:01:23,475 INFO L226 Difference]: Without dead ends: 18 [2020-10-28 15:01:23,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:01:23,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-28 15:01:23,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-28 15:01:23,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-28 15:01:23,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-10-28 15:01:23,532 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 11 [2020-10-28 15:01:23,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:01:23,532 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-10-28 15:01:23,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 15:01:23,533 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-10-28 15:01:23,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-28 15:01:23,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:01:23,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:01:23,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 15:01:23,535 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:01:23,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:01:23,536 INFO L82 PathProgramCache]: Analyzing trace with hash -2032792398, now seen corresponding path program 1 times [2020-10-28 15:01:23,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:01:23,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645823033] [2020-10-28 15:01:23,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:01:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:23,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:23,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:23,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 15:01:23,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:23,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 15:01:23,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:23,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:23,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:01:23,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:01:23,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:01:23,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:01:23,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:01:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:23,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:23,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:23,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:01:23,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:23,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 15:01:23,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:23,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:23,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:01:23,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:23,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:01:23,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 15:01:23,921 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 15:01:23,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645823033] [2020-10-28 15:01:23,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:01:23,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 15:01:23,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004648761] [2020-10-28 15:01:23,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 15:01:23,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:01:23,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 15:01:23,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:01:23,953 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 5 states. [2020-10-28 15:01:24,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:01:24,109 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-10-28 15:01:24,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 15:01:24,109 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-28 15:01:24,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:01:24,111 INFO L225 Difference]: With dead ends: 21 [2020-10-28 15:01:24,111 INFO L226 Difference]: Without dead ends: 18 [2020-10-28 15:01:24,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:01:24,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-28 15:01:24,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-10-28 15:01:24,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-28 15:01:24,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-10-28 15:01:24,120 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2020-10-28 15:01:24,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:01:24,120 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-10-28 15:01:24,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 15:01:24,121 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-10-28 15:01:24,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 15:01:24,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:01:24,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:01:24,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 15:01:24,122 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:01:24,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:01:24,123 INFO L82 PathProgramCache]: Analyzing trace with hash 698690422, now seen corresponding path program 1 times [2020-10-28 15:01:24,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:01:24,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877810448] [2020-10-28 15:01:24,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:01:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:24,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:24,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:24,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:24,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 15:01:24,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:01:24,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-28 15:01:24,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:24,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:24,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:01:24,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:01:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 15:01:24,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:01:24,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:01:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:24,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:24,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:24,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:01:24,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:24,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 15:01:24,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:24,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:24,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:01:24,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:24,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:01:24,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:01:24,487 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 15:01:24,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877810448] [2020-10-28 15:01:24,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:01:24,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 15:01:24,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268092397] [2020-10-28 15:01:24,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 15:01:24,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:01:24,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 15:01:24,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:01:24,490 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 5 states. [2020-10-28 15:01:24,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:01:24,698 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2020-10-28 15:01:24,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 15:01:24,699 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-28 15:01:24,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:01:24,699 INFO L225 Difference]: With dead ends: 21 [2020-10-28 15:01:24,699 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 15:01:24,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:01:24,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 15:01:24,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 15:01:24,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 15:01:24,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 15:01:24,701 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-28 15:01:24,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:01:24,701 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 15:01:24,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 15:01:24,702 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 15:01:24,702 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 15:01:24,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 15:01:24,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 15:01:25,177 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-28 15:01:25,177 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-28 15:01:25,178 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-28 15:01:25,178 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-28 15:01:25,178 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 15:01:25,179 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= ~__return_100~0 |old(~__return_100~0)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-28 15:01:25,179 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 15:01:25,179 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 15:01:25,179 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 15:01:25,179 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 15:01:25,179 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 15:01:25,179 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2020-10-28 15:01:25,180 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-10-28 15:01:25,180 INFO L274 CegarLoopResult]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2020-10-28 15:01:25,180 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2020-10-28 15:01:25,180 INFO L274 CegarLoopResult]: For program point L33(lines 33 89) no Hoare annotation was computed. [2020-10-28 15:01:25,180 INFO L270 CegarLoopResult]: At program point L64(line 64) the Hoare annotation is: false [2020-10-28 15:01:25,180 INFO L274 CegarLoopResult]: For program point L64-1(line 64) no Hoare annotation was computed. [2020-10-28 15:01:25,181 INFO L270 CegarLoopResult]: At program point L95(lines 14 102) the Hoare annotation is: (and (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1))) [2020-10-28 15:01:25,181 INFO L274 CegarLoopResult]: For program point L62(lines 62 70) no Hoare annotation was computed. [2020-10-28 15:01:25,181 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 13 102) no Hoare annotation was computed. [2020-10-28 15:01:25,181 INFO L270 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: false [2020-10-28 15:01:25,181 INFO L274 CegarLoopResult]: For program point L48-1(line 48) no Hoare annotation was computed. [2020-10-28 15:01:25,182 INFO L270 CegarLoopResult]: At program point L79(lines 52 87) the Hoare annotation is: (and (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1)) (< main_~main__i~0 main_~main__nlen~0) (<= 1 main_~__VERIFIER_assert__cond~0) (not (= main_~__VERIFIER_assert__cond~1 0))) [2020-10-28 15:01:25,182 INFO L274 CegarLoopResult]: For program point L46(lines 46 87) no Hoare annotation was computed. [2020-10-28 15:01:25,182 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 13 102) no Hoare annotation was computed. [2020-10-28 15:01:25,182 INFO L270 CegarLoopResult]: At program point L69(lines 39 89) the Hoare annotation is: (and (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1)) (< main_~main__i~0 main_~main__nlen~0) (<= 1 main_~__VERIFIER_assert__cond~0)) [2020-10-28 15:01:25,182 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 13 102) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-10-28 15:01:25,183 INFO L274 CegarLoopResult]: For program point L26(lines 26 96) no Hoare annotation was computed. [2020-10-28 15:01:25,183 INFO L274 CegarLoopResult]: For program point L76(lines 76 85) no Hoare annotation was computed. [2020-10-28 15:01:25,183 INFO L270 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: false [2020-10-28 15:01:25,183 INFO L274 CegarLoopResult]: For program point L35-1(line 35) no Hoare annotation was computed. [2020-10-28 15:01:25,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 03:01:25 BoogieIcfgContainer [2020-10-28 15:01:25,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 15:01:25,208 INFO L168 Benchmark]: Toolchain (without parser) took 4039.30 ms. Allocated memory was 152.0 MB in the beginning and 188.7 MB in the end (delta: 36.7 MB). Free memory was 127.0 MB in the beginning and 142.7 MB in the end (delta: -15.8 MB). Peak memory consumption was 79.7 MB. Max. memory is 8.0 GB. [2020-10-28 15:01:25,209 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 152.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 15:01:25,210 INFO L168 Benchmark]: CACSL2BoogieTranslator took 428.02 ms. Allocated memory is still 152.0 MB. Free memory was 126.4 MB in the beginning and 116.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 15:01:25,211 INFO L168 Benchmark]: Boogie Preprocessor took 65.08 ms. Allocated memory is still 152.0 MB. Free memory was 116.6 MB in the beginning and 115.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 15:01:25,212 INFO L168 Benchmark]: RCFGBuilder took 437.34 ms. Allocated memory is still 152.0 MB. Free memory was 115.1 MB in the beginning and 100.6 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-28 15:01:25,213 INFO L168 Benchmark]: TraceAbstraction took 3093.24 ms. Allocated memory was 152.0 MB in the beginning and 188.7 MB in the end (delta: 36.7 MB). Free memory was 100.2 MB in the beginning and 142.7 MB in the end (delta: -42.6 MB). Peak memory consumption was 52.4 MB. Max. memory is 8.0 GB. [2020-10-28 15:01:25,217 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 152.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 428.02 ms. Allocated memory is still 152.0 MB. Free memory was 126.4 MB in the beginning and 116.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 65.08 ms. Allocated memory is still 152.0 MB. Free memory was 116.6 MB in the beginning and 115.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 437.34 ms. Allocated memory is still 152.0 MB. Free memory was 115.1 MB in the beginning and 100.6 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3093.24 ms. Allocated memory was 152.0 MB in the beginning and 188.7 MB in the end (delta: 36.7 MB). Free memory was 100.2 MB in the beginning and 142.7 MB in the end (delta: -42.6 MB). Peak memory consumption was 52.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: \old(__return_100) == __return_100 && 0 < main__i + 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (((\old(__return_100) == __return_100 && 0 < main__i + 1) && main__i < main__nlen) && 1 <= __VERIFIER_assert__cond) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((\old(__return_100) == __return_100 && 0 < main__i + 1) && main__i < main__nlen) && 1 <= __VERIFIER_assert__cond - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 69 SDslu, 45 SDs, 0 SdLazy, 73 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 13 PreInvPairs, 15 NumberOfFragments, 89 HoareAnnotationTreeSize, 13 FomulaSimplifications, 298 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 11 FomulaSimplificationsInter, 143 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 2312 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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...