/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=SHALLOWEST --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-acceleration/simple_3-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:04:30,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:04:30,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:04:30,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:04:30,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:04:30,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:04:30,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:04:30,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:04:30,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:04:30,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:04:30,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:04:30,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:04:30,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:04:30,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:04:30,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:04:30,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:04:30,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:04:30,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:04:30,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:04:30,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:04:30,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:04:30,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:04:30,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:04:30,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:04:30,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:04:30,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:04:30,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:04:30,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:04:30,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:04:30,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:04:30,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:04:30,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:04:30,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:04:30,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:04:30,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:04:30,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:04:30,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:04:30,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:04:30,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:04:30,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:04:30,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:04:30,238 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 [2020-09-25 00:04:30,266 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:04:30,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:04:30,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:04:30,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:04:30,269 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:04:30,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:04:30,269 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:04:30,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:04:30,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:04:30,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:04:30,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:04:30,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:04:30,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:04:30,271 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:04:30,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:04:30,271 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:04:30,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:04:30,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:04:30,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:04:30,272 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:04:30,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:04:30,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:04:30,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:04:30,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:04:30,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:04:30,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:04:30,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:04:30,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:04:30,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:04:30,274 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-25 00:04:30,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:04:30,840 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:04:30,845 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:04:30,847 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:04:30,849 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:04:30,850 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_3-2.c [2020-09-25 00:04:30,946 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2d98adbd/8fae64bbd26144e2ba3e49984d045a27/FLAGa547fac98 [2020-09-25 00:04:31,531 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:04:31,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/simple_3-2.c [2020-09-25 00:04:31,541 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2d98adbd/8fae64bbd26144e2ba3e49984d045a27/FLAGa547fac98 [2020-09-25 00:04:31,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2d98adbd/8fae64bbd26144e2ba3e49984d045a27 [2020-09-25 00:04:31,902 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:04:31,909 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:04:31,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:04:31,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:04:31,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:04:31,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:04:31" (1/1) ... [2020-09-25 00:04:31,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441bb81b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:31, skipping insertion in model container [2020-09-25 00:04:31,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:04:31" (1/1) ... [2020-09-25 00:04:31,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:04:31,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:04:32,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:04:32,192 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:04:32,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:04:32,224 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:04:32,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:32 WrapperNode [2020-09-25 00:04:32,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:04:32,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:04:32,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:04:32,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:04:32,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:32" (1/1) ... [2020-09-25 00:04:32,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:32" (1/1) ... [2020-09-25 00:04:32,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:32" (1/1) ... [2020-09-25 00:04:32,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:32" (1/1) ... [2020-09-25 00:04:32,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:32" (1/1) ... [2020-09-25 00:04:32,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:32" (1/1) ... [2020-09-25 00:04:32,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:32" (1/1) ... [2020-09-25 00:04:32,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:04:32,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:04:32,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:04:32,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:04:32,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:32" (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 [2020-09-25 00:04:32,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:04:32,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:04:32,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 00:04:32,440 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:04:32,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:04:32,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2020-09-25 00:04:32,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 00:04:32,440 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:04:32,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:04:32,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:04:32,639 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:04:32,640 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 00:04:32,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:04:32 BoogieIcfgContainer [2020-09-25 00:04:32,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:04:32,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:04:32,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:04:32,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:04:32,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:04:31" (1/3) ... [2020-09-25 00:04:32,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4cf838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:04:32, skipping insertion in model container [2020-09-25 00:04:32,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:32" (2/3) ... [2020-09-25 00:04:32,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4cf838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:04:32, skipping insertion in model container [2020-09-25 00:04:32,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:04:32" (3/3) ... [2020-09-25 00:04:32,656 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_3-2.c [2020-09-25 00:04:32,668 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:04:32,678 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:04:32,698 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:04:32,727 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:04:32,727 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:04:32,727 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:04:32,727 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:04:32,727 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:04:32,728 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:04:32,728 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:04:32,728 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:04:32,749 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-09-25 00:04:32,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-25 00:04:32,755 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:32,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:04:32,757 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:32,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:32,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1456818433, now seen corresponding path program 1 times [2020-09-25 00:04:32,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:32,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497359492] [2020-09-25 00:04:32,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:32,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:32,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:33,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:33,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 00:04:33,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:04:33,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 00:04:33,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:33,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:04:33,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:04:33,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:04:33,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:04:33,431 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 12 [2020-09-25 00:04:33,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:04:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:33,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:33,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:33,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:04:33,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:33,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:04:33,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:33,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:33,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:04:33,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:33,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:04:33,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:04:33,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497359492] [2020-09-25 00:04:33,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:04:33,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:04:33,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141122732] [2020-09-25 00:04:33,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:04:33,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:04:33,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:04:33,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:04:33,513 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-09-25 00:04:33,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:04:33,599 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-09-25 00:04:33,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 00:04:33,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-25 00:04:33,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:04:33,611 INFO L225 Difference]: With dead ends: 29 [2020-09-25 00:04:33,611 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 00:04:33,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:04:33,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 00:04:33,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 00:04:33,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 00:04:33,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 00:04:33,651 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-09-25 00:04:33,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:04:33,651 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 00:04:33,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:04:33,652 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 00:04:33,652 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 00:04:33,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:04:33,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 00:04:33,689 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 00:04:33,690 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:04:33,690 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:04:33,690 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 00:04:33,690 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 00:04:33,690 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 00:04:33,691 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 20) the Hoare annotation is: true [2020-09-25 00:04:33,691 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 20) no Hoare annotation was computed. [2020-09-25 00:04:33,691 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 00:04:33,691 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 00:04:33,692 INFO L264 CegarLoopResult]: At program point L15-2(lines 15 17) the Hoare annotation is: (= main_~x~0 (let ((.cse0 (div main_~x~0 2))) (+ (* 2 .cse0) (* 4294967296 (div (+ (* .cse0 (- 2)) main_~x~0) 4294967296))))) [2020-09-25 00:04:33,692 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 20) no Hoare annotation was computed. [2020-09-25 00:04:33,692 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-25 00:04:33,692 INFO L264 CegarLoopResult]: At program point L15-3(lines 15 17) the Hoare annotation is: (= main_~x~0 (let ((.cse0 (div main_~x~0 2))) (+ (* 2 .cse0) (* 4294967296 (div (+ (* .cse0 (- 2)) main_~x~0) 4294967296))))) [2020-09-25 00:04:33,693 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-09-25 00:04:33,693 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2020-09-25 00:04:33,693 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-25 00:04:33,693 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-09-25 00:04:33,694 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-09-25 00:04:33,694 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2020-09-25 00:04:33,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:04:33 BoogieIcfgContainer [2020-09-25 00:04:33,716 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:04:33,718 INFO L168 Benchmark]: Toolchain (without parser) took 1813.65 ms. Allocated memory was 148.4 MB in the beginning and 203.4 MB in the end (delta: 55.1 MB). Free memory was 104.8 MB in the beginning and 126.5 MB in the end (delta: -21.6 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2020-09-25 00:04:33,719 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 148.4 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 00:04:33,721 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.42 ms. Allocated memory is still 148.4 MB. Free memory was 104.2 MB in the beginning and 94.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-25 00:04:33,722 INFO L168 Benchmark]: Boogie Preprocessor took 133.98 ms. Allocated memory was 148.4 MB in the beginning and 203.4 MB in the end (delta: 55.1 MB). Free memory was 94.9 MB in the beginning and 181.9 MB in the end (delta: -87.0 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-25 00:04:33,723 INFO L168 Benchmark]: RCFGBuilder took 284.61 ms. Allocated memory is still 203.4 MB. Free memory was 181.9 MB in the beginning and 170.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-09-25 00:04:33,724 INFO L168 Benchmark]: TraceAbstraction took 1069.41 ms. Allocated memory is still 203.4 MB. Free memory was 170.1 MB in the beginning and 126.5 MB in the end (delta: 43.6 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. [2020-09-25 00:04:33,728 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 148.4 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 314.42 ms. Allocated memory is still 148.4 MB. Free memory was 104.2 MB in the beginning and 94.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.98 ms. Allocated memory was 148.4 MB in the beginning and 203.4 MB in the end (delta: 55.1 MB). Free memory was 94.9 MB in the beginning and 181.9 MB in the end (delta: -87.0 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 284.61 ms. Allocated memory is still 203.4 MB. Free memory was 181.9 MB in the beginning and 170.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1069.41 ms. Allocated memory is still 203.4 MB. Free memory was 170.1 MB in the beginning and 126.5 MB in the end (delta: 43.6 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 15]: Loop Invariant Derived loop invariant: x == 2 * (x / 2) + 4294967296 * ((x / 2 * -2 + x) / 4294967296) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 8 SDslu, 29 SDs, 0 SdLazy, 16 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, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 43 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 979 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...