/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 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=BIGGEST --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 -i ../../../trunk/examples/svcomp/loop-acceleration/overflow_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 16:00:47,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 16:00:47,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 16:00:47,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 16:00:47,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 16:00:47,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 16:00:47,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 16:00:47,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 16:00:47,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 16:00:47,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 16:00:47,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 16:00:47,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 16:00:47,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 16:00:47,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 16:00:47,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 16:00:47,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 16:00:47,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 16:00:47,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 16:00:47,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 16:00:47,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 16:00:47,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 16:00:47,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 16:00:47,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 16:00:47,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 16:00:47,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 16:00:47,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 16:00:47,188 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 16:00:47,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 16:00:47,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 16:00:47,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 16:00:47,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 16:00:47,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 16:00:47,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 16:00:47,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 16:00:47,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 16:00:47,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 16:00:47,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 16:00:47,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 16:00:47,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 16:00:47,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 16:00:47,207 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 16:00:47,209 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 [2020-10-12 16:00:47,247 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 16:00:47,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 16:00:47,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 16:00:47,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 16:00:47,250 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 16:00:47,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 16:00:47,251 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 16:00:47,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 16:00:47,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 16:00:47,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 16:00:47,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 16:00:47,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 16:00:47,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 16:00:47,253 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 16:00:47,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 16:00:47,254 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 16:00:47,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 16:00:47,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 16:00:47,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 16:00:47,255 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 16:00:47,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 16:00:47,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 16:00:47,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 16:00:47,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 16:00:47,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 16:00:47,256 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 16:00:47,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 16:00:47,256 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 16:00:47,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 16:00:47,257 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 -> 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 16:00:47,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 16:00:47,658 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 16:00:47,662 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 16:00:47,664 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 16:00:47,665 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 16:00:47,666 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/overflow_1-1.c [2020-10-12 16:00:47,748 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a57f2507/f3bdfabf8f2a40618ff394f315f8b60c/FLAG7d093225f [2020-10-12 16:00:48,198 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 16:00:48,198 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/overflow_1-1.c [2020-10-12 16:00:48,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a57f2507/f3bdfabf8f2a40618ff394f315f8b60c/FLAG7d093225f [2020-10-12 16:00:48,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a57f2507/f3bdfabf8f2a40618ff394f315f8b60c [2020-10-12 16:00:48,579 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 16:00:48,581 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 16:00:48,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 16:00:48,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 16:00:48,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 16:00:48,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:00:48" (1/1) ... [2020-10-12 16:00:48,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c77fbdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:00:48, skipping insertion in model container [2020-10-12 16:00:48,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:00:48" (1/1) ... [2020-10-12 16:00:48,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 16:00:48,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 16:00:48,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:00:48,790 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 16:00:48,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:00:48,821 INFO L208 MainTranslator]: Completed translation [2020-10-12 16:00:48,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:00:48 WrapperNode [2020-10-12 16:00:48,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 16:00:48,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 16:00:48,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 16:00:48,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 16:00:48,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:00:48" (1/1) ... [2020-10-12 16:00:48,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:00:48" (1/1) ... [2020-10-12 16:00:48,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:00:48" (1/1) ... [2020-10-12 16:00:48,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:00:48" (1/1) ... [2020-10-12 16:00:48,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:00:48" (1/1) ... [2020-10-12 16:00:48,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:00:48" (1/1) ... [2020-10-12 16:00:48,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:00:48" (1/1) ... [2020-10-12 16:00:48,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 16:00:48,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 16:00:48,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 16:00:48,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 16:00:48,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:00:48" (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 [2020-10-12 16:00:49,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 16:00:49,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 16:00:49,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 16:00:49,002 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 16:00:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 16:00:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 16:00:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 16:00:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 16:00:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 16:00:49,160 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 16:00:49,161 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 16:00:49,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:00:49 BoogieIcfgContainer [2020-10-12 16:00:49,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 16:00:49,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 16:00:49,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 16:00:49,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 16:00:49,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:00:48" (1/3) ... [2020-10-12 16:00:49,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6908b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:00:49, skipping insertion in model container [2020-10-12 16:00:49,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:00:48" (2/3) ... [2020-10-12 16:00:49,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6908b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:00:49, skipping insertion in model container [2020-10-12 16:00:49,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:00:49" (3/3) ... [2020-10-12 16:00:49,174 INFO L109 eAbstractionObserver]: Analyzing ICFG overflow_1-1.c [2020-10-12 16:00:49,185 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 16:00:49,193 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 16:00:49,207 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 16:00:49,233 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 16:00:49,233 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 16:00:49,233 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 16:00:49,234 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 16:00:49,234 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 16:00:49,234 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 16:00:49,234 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 16:00:49,234 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 16:00:49,252 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-10-12 16:00:49,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-12 16:00:49,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:00:49,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:00:49,260 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:00:49,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:00:49,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2020-10-12 16:00:49,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:00:49,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351379165] [2020-10-12 16:00:49,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:00:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:00:49,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:00:49,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:00:49,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:00:49,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 16:00:49,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:00:49,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-12 16:00:49,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:00:49,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:00:49,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 16:00:49,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 16:00:49,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 16:00:53,869 WARN L193 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 43 DAG size of output: 15 [2020-10-12 16:00:53,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:00:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:00:53,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:00:53,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:00:53,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 16:00:53,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:00:53,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:00:53,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:00:53,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:00:53,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:00:53,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:00:53,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:00:53,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:00:53,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351379165] [2020-10-12 16:00:53,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:00:53,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 16:00:53,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54581035] [2020-10-12 16:00:53,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:00:53,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:00:53,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:00:53,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:00:53,933 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2020-10-12 16:00:54,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:00:54,011 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2020-10-12 16:00:54,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 16:00:54,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-12 16:00:54,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:00:54,023 INFO L225 Difference]: With dead ends: 26 [2020-10-12 16:00:54,023 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 16:00:54,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:00:54,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 16:00:54,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 16:00:54,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 16:00:54,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 16:00:54,056 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-10-12 16:00:54,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:00:54,056 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 16:00:54,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:00:54,056 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 16:00:54,056 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 16:00:54,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 16:00:54,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 16:00:54,113 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-12 16:00:54,113 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-12 16:00:54,113 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-12 16:00:54,114 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-12 16:00:54,114 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-12 16:00:54,114 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-12 16:00:54,114 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 18) the Hoare annotation is: true [2020-10-12 16:00:54,114 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 18) no Hoare annotation was computed. [2020-10-12 16:00:54,115 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 18) no Hoare annotation was computed. [2020-10-12 16:00:54,115 INFO L264 CegarLoopResult]: At program point L13-2(lines 13 15) the Hoare annotation is: (let ((.cse0 (div main_~x~0 2))) (and (<= main_~x~0 (+ (* 2 .cse0) (* 4294967296 (div (+ (* .cse0 (- 2)) main_~x~0) 4294967296)))) (< 4 .cse0))) [2020-10-12 16:00:54,115 INFO L264 CegarLoopResult]: At program point L13-3(lines 13 15) the Hoare annotation is: (let ((.cse0 (div main_~x~0 2))) (and (<= main_~x~0 (+ (* 2 .cse0) (* 4294967296 (div (+ (* .cse0 (- 2)) main_~x~0) 4294967296)))) (< 4 .cse0))) [2020-10-12 16:00:54,116 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-10-12 16:00:54,116 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-10-12 16:00:54,116 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-10-12 16:00:54,116 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-10-12 16:00:54,117 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-10-12 16:00:54,117 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-10-12 16:00:54,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 04:00:54 BoogieIcfgContainer [2020-10-12 16:00:54,137 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 16:00:54,140 INFO L168 Benchmark]: Toolchain (without parser) took 5558.64 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 102.6 MB in the beginning and 121.0 MB in the end (delta: -18.4 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. [2020-10-12 16:00:54,141 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 16:00:54,142 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.95 ms. Allocated memory is still 138.9 MB. Free memory was 102.2 MB in the beginning and 93.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-10-12 16:00:54,143 INFO L168 Benchmark]: Boogie Preprocessor took 113.65 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 93.0 MB in the beginning and 180.3 MB in the end (delta: -87.2 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-10-12 16:00:54,145 INFO L168 Benchmark]: RCFGBuilder took 227.96 ms. Allocated memory is still 200.3 MB. Free memory was 180.3 MB in the beginning and 168.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-10-12 16:00:54,146 INFO L168 Benchmark]: TraceAbstraction took 4971.33 ms. Allocated memory is still 200.3 MB. Free memory was 168.4 MB in the beginning and 121.0 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. [2020-10-12 16:00:54,150 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 239.95 ms. Allocated memory is still 138.9 MB. Free memory was 102.2 MB in the beginning and 93.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.65 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 93.0 MB in the beginning and 180.3 MB in the end (delta: -87.2 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 227.96 ms. Allocated memory is still 200.3 MB. Free memory was 180.3 MB in the beginning and 168.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4971.33 ms. Allocated memory is still 200.3 MB. Free memory was 168.4 MB in the beginning and 121.0 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 13]: Loop Invariant Derived loop invariant: x <= 2 * (x / 2) + 4294967296 * ((x / 2 * -2 + x) / 4294967296) && 4 < x / 2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 6 SDslu, 25 SDs, 0 SdLazy, 13 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 55 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 549 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...