/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=DEEPEST --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/loops-crafted-1/sumt2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 20:31:46,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 20:31:46,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 20:31:46,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 20:31:46,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 20:31:46,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 20:31:46,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 20:31:46,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 20:31:46,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 20:31:46,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 20:31:46,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 20:31:46,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 20:31:46,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 20:31:46,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 20:31:46,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 20:31:46,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 20:31:46,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 20:31:46,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 20:31:46,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 20:31:46,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 20:31:46,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 20:31:46,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 20:31:46,229 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 20:31:46,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 20:31:46,234 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 20:31:46,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 20:31:46,235 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 20:31:46,236 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 20:31:46,237 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 20:31:46,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 20:31:46,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 20:31:46,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 20:31:46,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 20:31:46,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 20:31:46,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 20:31:46,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 20:31:46,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 20:31:46,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 20:31:46,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 20:31:46,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 20:31:46,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 20:31:46,256 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 20:31:46,283 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 20:31:46,283 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 20:31:46,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 20:31:46,285 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 20:31:46,285 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 20:31:46,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 20:31:46,286 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 20:31:46,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 20:31:46,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 20:31:46,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 20:31:46,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 20:31:46,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 20:31:46,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 20:31:46,287 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 20:31:46,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 20:31:46,287 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 20:31:46,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 20:31:46,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 20:31:46,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 20:31:46,288 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 20:31:46,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 20:31:46,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:31:46,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 20:31:46,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 20:31:46,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 20:31:46,289 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 20:31:46,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 20:31:46,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 20:31:46,290 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 20:31:46,290 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 20:31:46,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 20:31:46,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 20:31:46,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 20:31:46,719 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 20:31:46,720 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 20:31:46,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt2.c [2020-10-27 20:31:46,813 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/413d9101c/9d10f7a072724ad7b660514c2a7341ba/FLAG9f2bc6155 [2020-10-27 20:31:47,482 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 20:31:47,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt2.c [2020-10-27 20:31:47,491 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/413d9101c/9d10f7a072724ad7b660514c2a7341ba/FLAG9f2bc6155 [2020-10-27 20:31:47,514 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/413d9101c/9d10f7a072724ad7b660514c2a7341ba [2020-10-27 20:31:47,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 20:31:47,528 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 20:31:47,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 20:31:47,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 20:31:47,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 20:31:47,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:31:47" (1/1) ... [2020-10-27 20:31:47,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fd39a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:31:47, skipping insertion in model container [2020-10-27 20:31:47,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:31:47" (1/1) ... [2020-10-27 20:31:47,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 20:31:47,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 20:31:47,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:31:47,749 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 20:31:47,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:31:47,780 INFO L208 MainTranslator]: Completed translation [2020-10-27 20:31:47,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:31:47 WrapperNode [2020-10-27 20:31:47,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 20:31:47,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 20:31:47,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 20:31:47,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 20:31:47,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:31:47" (1/1) ... [2020-10-27 20:31:47,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:31:47" (1/1) ... [2020-10-27 20:31:47,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:31:47" (1/1) ... [2020-10-27 20:31:47,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:31:47" (1/1) ... [2020-10-27 20:31:47,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:31:47" (1/1) ... [2020-10-27 20:31:47,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:31:47" (1/1) ... [2020-10-27 20:31:47,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:31:47" (1/1) ... [2020-10-27 20:31:47,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 20:31:47,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 20:31:47,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 20:31:47,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 20:31:47,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:31:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:31:47,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 20:31:47,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 20:31:47,899 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 20:31:47,899 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 20:31:47,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 20:31:47,900 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 20:31:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 20:31:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 20:31:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 20:31:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 20:31:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 20:31:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 20:31:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-27 20:31:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 20:31:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 20:31:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 20:31:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 20:31:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 20:31:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 20:31:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 20:31:48,228 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 20:31:48,228 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 20:31:48,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:31:48 BoogieIcfgContainer [2020-10-27 20:31:48,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 20:31:48,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 20:31:48,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 20:31:48,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 20:31:48,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:31:47" (1/3) ... [2020-10-27 20:31:48,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2920e7f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:31:48, skipping insertion in model container [2020-10-27 20:31:48,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:31:47" (2/3) ... [2020-10-27 20:31:48,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2920e7f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:31:48, skipping insertion in model container [2020-10-27 20:31:48,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:31:48" (3/3) ... [2020-10-27 20:31:48,241 INFO L111 eAbstractionObserver]: Analyzing ICFG sumt2.c [2020-10-27 20:31:48,255 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 20:31:48,261 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 20:31:48,278 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 20:31:48,321 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 20:31:48,322 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 20:31:48,322 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 20:31:48,322 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 20:31:48,322 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 20:31:48,322 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 20:31:48,322 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 20:31:48,322 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 20:31:48,342 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-27 20:31:48,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-27 20:31:48,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:31:48,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:31:48,351 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:31:48,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:31:48,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1457529991, now seen corresponding path program 1 times [2020-10-27 20:31:48,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:31:48,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124663213] [2020-10-27 20:31:48,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:31:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:31:48,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:31:48,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:31:49,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:31:49,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 20:31:49,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:31:49,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 501 [2020-10-27 20:31:49,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:31:49,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:31:49,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 20:31:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:31:49,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 20:31:49,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:31:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:31:49,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:31:49,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:31:49,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:31:49,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:31:49,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 20:31:49,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:31:49,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:31:49,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:31:49,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:31:49,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:31:49,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:31:49,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124663213] [2020-10-27 20:31:49,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:31:49,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 20:31:49,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789294342] [2020-10-27 20:31:49,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 20:31:49,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:31:49,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 20:31:49,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 20:31:49,233 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-10-27 20:31:49,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:31:49,353 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-10-27 20:31:49,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 20:31:49,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-27 20:31:49,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:31:49,369 INFO L225 Difference]: With dead ends: 39 [2020-10-27 20:31:49,369 INFO L226 Difference]: Without dead ends: 16 [2020-10-27 20:31:49,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 20:31:49,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-27 20:31:49,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-27 20:31:49,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-27 20:31:49,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-10-27 20:31:49,437 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2020-10-27 20:31:49,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:31:49,439 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-10-27 20:31:49,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 20:31:49,440 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-10-27 20:31:49,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-27 20:31:49,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:31:49,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:31:49,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 20:31:49,441 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:31:49,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:31:49,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1772450652, now seen corresponding path program 1 times [2020-10-27 20:31:49,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:31:49,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763326973] [2020-10-27 20:31:49,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:31:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:31:49,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:31:49,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:31:49,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 20:31:49,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:31:49,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-27 20:31:49,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:31:49,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:31:49,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:31:49,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:31:49,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:31:49,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:31:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:31:49,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:31:49,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:31:49,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:31:49,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:31:49,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 20:31:49,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:31:49,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:31:49,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:31:49,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:31:49,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:31:49,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:31:49,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763326973] [2020-10-27 20:31:49,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:31:49,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:31:49,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80281691] [2020-10-27 20:31:49,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:31:49,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:31:49,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:31:49,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:31:49,801 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 6 states. [2020-10-27 20:31:50,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:31:50,077 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2020-10-27 20:31:50,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 20:31:50,079 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-27 20:31:50,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:31:50,080 INFO L225 Difference]: With dead ends: 30 [2020-10-27 20:31:50,080 INFO L226 Difference]: Without dead ends: 18 [2020-10-27 20:31:50,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 20:31:50,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-27 20:31:50,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-27 20:31:50,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-27 20:31:50,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-10-27 20:31:50,099 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-10-27 20:31:50,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:31:50,100 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-10-27 20:31:50,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:31:50,100 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-10-27 20:31:50,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 20:31:50,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:31:50,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:31:50,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 20:31:50,103 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:31:50,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:31:50,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1662926918, now seen corresponding path program 1 times [2020-10-27 20:31:50,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:31:50,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159050052] [2020-10-27 20:31:50,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:31:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:31:50,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:31:50,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:31:50,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 20:31:50,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:31:50,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-27 20:31:50,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:31:50,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:31:50,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:31:50,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:31:50,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:31:50,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:31:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:31:50,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:31:50,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:31:50,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:31:50,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:31:50,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:31:50,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:31:50,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:31:50,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:31:50,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:31:50,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:31:50,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:31:50,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159050052] [2020-10-27 20:31:50,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:31:50,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 20:31:50,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941854074] [2020-10-27 20:31:50,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 20:31:50,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:31:50,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 20:31:50,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:31:50,681 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 8 states. [2020-10-27 20:31:50,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:31:50,914 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-10-27 20:31:50,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 20:31:50,915 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-10-27 20:31:50,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:31:50,915 INFO L225 Difference]: With dead ends: 18 [2020-10-27 20:31:50,916 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 20:31:50,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:31:50,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 20:31:50,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 20:31:50,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 20:31:50,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 20:31:50,918 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-10-27 20:31:50,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:31:50,918 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 20:31:50,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 20:31:50,918 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 20:31:50,919 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 20:31:50,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 20:31:50,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 20:31:51,134 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-27 20:31:51,134 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-27 20:31:51,134 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-27 20:31:51,135 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-27 20:31:51,135 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 20:31:51,135 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)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= ~SIZE~0 |old(~SIZE~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-27 20:31:51,135 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 20:31:51,135 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 20:31:51,136 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 20:31:51,136 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 20:31:51,136 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 20:31:51,136 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 5 7) no Hoare annotation was computed. [2020-10-27 20:31:51,136 INFO L274 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-10-27 20:31:51,136 INFO L274 CegarLoopResult]: For program point L6-2(lines 5 7) no Hoare annotation was computed. [2020-10-27 20:31:51,136 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2020-10-27 20:31:51,137 INFO L274 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-10-27 20:31:51,137 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 16 33) the Hoare annotation is: true [2020-10-27 20:31:51,137 INFO L274 CegarLoopResult]: For program point L25(lines 25 28) no Hoare annotation was computed. [2020-10-27 20:31:51,137 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 16 33) no Hoare annotation was computed. [2020-10-27 20:31:51,137 INFO L274 CegarLoopResult]: For program point L25-2(lines 25 28) no Hoare annotation was computed. [2020-10-27 20:31:51,137 INFO L270 CegarLoopResult]: At program point L23-2(lines 23 30) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0))) (and (<= .cse0 main_~l~0) (<= main_~l~0 .cse0))) [2020-10-27 20:31:51,138 INFO L270 CegarLoopResult]: At program point L23-3(lines 23 30) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0))) (and (<= .cse0 main_~l~0) (<= main_~l~0 .cse0))) [2020-10-27 20:31:51,138 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-10-27 20:31:51,138 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 16 33) no Hoare annotation was computed. [2020-10-27 20:31:51,138 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 8 13) the Hoare annotation is: true [2020-10-27 20:31:51,138 INFO L270 CegarLoopResult]: At program point L10(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-27 20:31:51,138 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 8 13) no Hoare annotation was computed. [2020-10-27 20:31:51,139 INFO L274 CegarLoopResult]: For program point L9(lines 9 11) no Hoare annotation was computed. [2020-10-27 20:31:51,139 INFO L274 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2020-10-27 20:31:51,139 INFO L274 CegarLoopResult]: For program point L9-2(lines 8 13) no Hoare annotation was computed. [2020-10-27 20:31:51,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:31:51 BoogieIcfgContainer [2020-10-27 20:31:51,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 20:31:51,159 INFO L168 Benchmark]: Toolchain (without parser) took 3635.94 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.6 MB in the beginning and 147.1 MB in the end (delta: -20.6 MB). Peak memory consumption was 98.3 MB. Max. memory is 8.0 GB. [2020-10-27 20:31:51,160 INFO L168 Benchmark]: CDTParser took 1.75 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 20:31:51,161 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.86 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 20:31:51,162 INFO L168 Benchmark]: Boogie Preprocessor took 38.17 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 20:31:51,163 INFO L168 Benchmark]: RCFGBuilder took 410.28 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 101.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-27 20:31:51,164 INFO L168 Benchmark]: TraceAbstraction took 2923.59 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 101.0 MB in the beginning and 147.1 MB in the end (delta: -46.1 MB). Peak memory consumption was 72.1 MB. Max. memory is 8.0 GB. [2020-10-27 20:31:51,168 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.75 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 250.86 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.17 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 410.28 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 101.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2923.59 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 101.0 MB in the beginning and 147.1 MB in the end (delta: -46.1 MB). Peak memory consumption was 72.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 23]: Loop Invariant Derived loop invariant: i + j <= l && l <= i + j - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 38 SDtfs, 38 SDslu, 43 SDs, 0 SdLazy, 83 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 17 PreInvPairs, 21 NumberOfFragments, 64 HoareAnnotationTreeSize, 17 FomulaSimplifications, 54 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 232 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 4038 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 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...