/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/id_trans.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:56:44,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:56:44,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:56:44,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:56:44,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:56:44,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:56:44,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:56:44,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:56:44,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:56:44,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:56:44,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:56:44,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:56:44,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:56:44,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:56:44,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:56:44,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:56:44,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:56:44,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:56:44,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:56:44,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:56:44,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:56:44,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:56:44,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:56:44,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:56:44,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:56:44,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:56:44,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:56:44,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:56:44,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:56:44,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:56:44,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:56:44,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:56:44,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:56:44,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:56:44,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:56:44,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:56:44,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:56:44,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:56:44,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:56:44,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:56:44,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:56:44,280 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 [2020-09-24 22:56:44,329 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:56:44,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:56:44,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:56:44,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:56:44,332 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:56:44,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:56:44,332 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:56:44,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:56:44,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:56:44,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:56:44,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:56:44,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:56:44,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:56:44,335 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:56:44,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:56:44,335 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:56:44,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:56:44,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:56:44,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:56:44,336 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:56:44,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:56:44,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:56:44,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:56:44,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:56:44,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:56:44,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:56:44,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:56:44,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:56:44,338 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:56:44,338 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=HIGHLEXORDER;log-additional-information=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=HIGHLEXORDER;log-additional-information=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=HIGHLEXORDER;log-additional-information=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=HIGHLEXORDER;log-additional-information=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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:56:44,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:56:44,832 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:56:44,837 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:56:44,838 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:56:44,839 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:56:44,840 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_trans.i [2020-09-24 22:56:44,922 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f37c4d4c7/991bdf5b0e864416a7e6b7b73ff5b793/FLAG2b07598b3 [2020-09-24 22:56:45,446 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:56:45,447 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/id_trans.i [2020-09-24 22:56:45,456 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f37c4d4c7/991bdf5b0e864416a7e6b7b73ff5b793/FLAG2b07598b3 [2020-09-24 22:56:45,795 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f37c4d4c7/991bdf5b0e864416a7e6b7b73ff5b793 [2020-09-24 22:56:45,809 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:56:45,815 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:56:45,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:56:45,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:56:45,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:56:45,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:56:45" (1/1) ... [2020-09-24 22:56:45,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2daff610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:45, skipping insertion in model container [2020-09-24 22:56:45,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:56:45" (1/1) ... [2020-09-24 22:56:45,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:56:45,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:56:46,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:56:46,073 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:56:46,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:56:46,111 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:56:46,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:46 WrapperNode [2020-09-24 22:56:46,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:56:46,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:56:46,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:56:46,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:56:46,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:46" (1/1) ... [2020-09-24 22:56:46,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:46" (1/1) ... [2020-09-24 22:56:46,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:46" (1/1) ... [2020-09-24 22:56:46,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:46" (1/1) ... [2020-09-24 22:56:46,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:46" (1/1) ... [2020-09-24 22:56:46,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:46" (1/1) ... [2020-09-24 22:56:46,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:46" (1/1) ... [2020-09-24 22:56:46,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:56:46,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:56:46,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:56:46,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:56:46,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:46" (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 [2020-09-24 22:56:46,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:56:46,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:56:46,312 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 22:56:46,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 22:56:46,312 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:56:46,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:56:46,312 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 22:56:46,312 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 22:56:46,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 22:56:46,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:56:46,314 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:56:46,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:56:46,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:56:46,572 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:56:46,573 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 22:56:46,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:56:46 BoogieIcfgContainer [2020-09-24 22:56:46,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:56:46,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:56:46,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:56:46,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:56:46,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:56:45" (1/3) ... [2020-09-24 22:56:46,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15a6d3e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:56:46, skipping insertion in model container [2020-09-24 22:56:46,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:46" (2/3) ... [2020-09-24 22:56:46,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15a6d3e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:56:46, skipping insertion in model container [2020-09-24 22:56:46,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:56:46" (3/3) ... [2020-09-24 22:56:46,589 INFO L109 eAbstractionObserver]: Analyzing ICFG id_trans.i [2020-09-24 22:56:46,602 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:56:46,615 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:56:46,675 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:56:46,743 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:56:46,744 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:56:46,744 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:56:46,744 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:56:46,744 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:56:46,744 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:56:46,744 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:56:46,744 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:56:46,767 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-09-24 22:56:46,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 22:56:46,775 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:46,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:56:46,777 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:46,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:46,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1049898450, now seen corresponding path program 1 times [2020-09-24 22:56:46,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:46,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716674591] [2020-09-24 22:56:46,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:46,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:47,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:47,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:56:47,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:47,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-24 22:56:47,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:47,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:56:47,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 22:56:47,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:56:47,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:56:47,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:47,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:47,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:47,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:56:47,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:47,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:56:47,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:47,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:47,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:47,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:47,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:47,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:56:47,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716674591] [2020-09-24 22:56:47,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:56:47,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:56:47,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136793996] [2020-09-24 22:56:47,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:56:47,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:47,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:56:47,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:56:47,362 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 5 states. [2020-09-24 22:56:47,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:47,531 INFO L93 Difference]: Finished difference Result 73 states and 98 transitions. [2020-09-24 22:56:47,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:56:47,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-24 22:56:47,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:47,547 INFO L225 Difference]: With dead ends: 73 [2020-09-24 22:56:47,547 INFO L226 Difference]: Without dead ends: 45 [2020-09-24 22:56:47,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:56:47,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-24 22:56:47,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2020-09-24 22:56:47,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 22:56:47,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-09-24 22:56:47,612 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 25 [2020-09-24 22:56:47,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:47,613 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-09-24 22:56:47,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:56:47,613 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-09-24 22:56:47,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 22:56:47,616 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:47,616 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:56:47,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:56:47,617 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:47,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:47,617 INFO L82 PathProgramCache]: Analyzing trace with hash 56397381, now seen corresponding path program 1 times [2020-09-24 22:56:47,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:47,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158134568] [2020-09-24 22:56:47,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:47,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:47,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:47,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 22:56:47,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:47,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-24 22:56:47,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:47,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:56:47,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 22:56:47,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 22:56:47,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:47,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:47,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:47,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:47,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:56:47,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:47,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:56:47,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:47,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:47,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:47,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:47,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:47,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 22:56:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:47,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:47,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:47,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:56:47,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:47,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:56:47,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:47,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:56:47,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:47,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:56:47,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:47,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:56:47,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158134568] [2020-09-24 22:56:47,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:56:47,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:56:47,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255678539] [2020-09-24 22:56:47,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:56:47,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:47,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:56:47,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:56:47,952 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 5 states. [2020-09-24 22:56:48,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:48,031 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-09-24 22:56:48,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:56:48,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-24 22:56:48,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:48,036 INFO L225 Difference]: With dead ends: 48 [2020-09-24 22:56:48,036 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 22:56:48,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:56:48,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 22:56:48,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-24 22:56:48,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-24 22:56:48,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-09-24 22:56:48,049 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 30 [2020-09-24 22:56:48,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:48,049 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-09-24 22:56:48,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:56:48,050 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-09-24 22:56:48,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 22:56:48,051 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:48,052 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:56:48,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:56:48,052 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:48,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:48,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1292887515, now seen corresponding path program 1 times [2020-09-24 22:56:48,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:48,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247175107] [2020-09-24 22:56:48,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 22:56:48,076 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 22:56:48,076 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 22:56:48,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:56:48,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:56:48 BoogieIcfgContainer [2020-09-24 22:56:48,101 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:56:48,105 INFO L168 Benchmark]: Toolchain (without parser) took 2292.48 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 105.1 MB in the beginning and 97.9 MB in the end (delta: 7.2 MB). Peak memory consumption was 70.1 MB. Max. memory is 7.1 GB. [2020-09-24 22:56:48,106 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 22:56:48,107 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.95 ms. Allocated memory is still 141.6 MB. Free memory was 104.5 MB in the beginning and 94.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-24 22:56:48,108 INFO L168 Benchmark]: Boogie Preprocessor took 115.09 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 94.7 MB in the beginning and 184.5 MB in the end (delta: -89.8 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-24 22:56:48,109 INFO L168 Benchmark]: RCFGBuilder took 351.15 ms. Allocated memory is still 204.5 MB. Free memory was 184.5 MB in the beginning and 169.3 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2020-09-24 22:56:48,110 INFO L168 Benchmark]: TraceAbstraction took 1520.66 ms. Allocated memory is still 204.5 MB. Free memory was 168.7 MB in the beginning and 97.9 MB in the end (delta: 70.8 MB). Peak memory consumption was 70.8 MB. Max. memory is 7.1 GB. [2020-09-24 22:56:48,115 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 295.95 ms. Allocated memory is still 141.6 MB. Free memory was 104.5 MB in the beginning and 94.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.09 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 94.7 MB in the beginning and 184.5 MB in the end (delta: -89.8 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 351.15 ms. Allocated memory is still 204.5 MB. Free memory was 184.5 MB in the beginning and 169.3 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1520.66 ms. Allocated memory is still 204.5 MB. Free memory was 168.7 MB in the beginning and 97.9 MB in the end (delta: 70.8 MB). Peak memory consumption was 70.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int idBitLength, material_length, nlen; [L15] int j, k; [L16] nlen = __VERIFIER_nondet_int() [L17] idBitLength = __VERIFIER_nondet_int() [L18] material_length = __VERIFIER_nondet_int() [L19] COND FALSE !(!( nlen == idBitLength / 32 )) [L20] j = 0 [L20] COND TRUE (j < idBitLength / 8) && (j < material_length) [L21] CALL __VERIFIER_assert( 0 <= j) [L7] COND FALSE !(!(cond)) [L21] RET __VERIFIER_assert( 0 <= j) [L22] CALL __VERIFIER_assert( j < material_length ) [L7] COND FALSE !(!(cond)) [L22] RET __VERIFIER_assert( j < material_length ) [L23] CALL __VERIFIER_assert( 0 <= j/4 ) [L7] COND FALSE !(!(cond)) [L23] RET __VERIFIER_assert( 0 <= j/4 ) [L24] CALL __VERIFIER_assert( j/4 < nlen) [L7] COND TRUE !(cond) [L8] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 79 SDtfs, 14 SDslu, 207 SDs, 0 SdLazy, 53 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=2, 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, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 1899 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 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 incorrect! Received shutdown request...