/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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/loopv1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:52:34,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:52:34,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:52:34,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:52:34,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:52:34,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:52:34,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:52:34,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:52:34,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:52:34,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:52:34,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:52:34,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:52:34,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:52:34,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:52:34,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:52:34,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:52:34,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:52:34,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:52:34,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:52:34,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:52:34,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:52:34,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:52:34,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:52:34,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:52:34,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:52:34,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:52:34,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:52:34,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:52:34,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:52:34,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:52:34,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:52:34,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:52:34,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:52:34,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:52:34,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:52:34,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:52:34,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:52:34,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:52:34,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:52:34,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:52:34,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:52:34,357 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 21:52:34,400 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:52:34,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:52:34,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:52:34,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:52:34,403 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:52:34,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:52:34,403 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:52:34,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:52:34,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:52:34,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:52:34,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:52:34,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:52:34,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:52:34,404 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:52:34,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:52:34,405 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:52:34,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:52:34,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:52:34,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:52:34,406 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:52:34,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:52:34,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:52:34,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:52:34,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:52:34,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:52:34,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:52:34,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:52:34,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:52:34,407 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:52:34,408 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:52:34,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:52:34,920 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:52:34,925 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:52:34,928 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:52:34,928 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:52:34,929 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/loopv1.c [2020-09-24 21:52:35,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71d031db3/1edacba9cc6b4e5c9fdaaf2973ba6d9c/FLAG5203b70b6 [2020-09-24 21:52:35,565 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:52:35,566 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/loopv1.c [2020-09-24 21:52:35,574 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71d031db3/1edacba9cc6b4e5c9fdaaf2973ba6d9c/FLAG5203b70b6 [2020-09-24 21:52:35,914 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71d031db3/1edacba9cc6b4e5c9fdaaf2973ba6d9c [2020-09-24 21:52:35,929 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:52:35,935 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:52:35,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:52:35,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:52:35,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:52:35,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:52:35" (1/1) ... [2020-09-24 21:52:35,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ddb90c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:35, skipping insertion in model container [2020-09-24 21:52:35,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:52:35" (1/1) ... [2020-09-24 21:52:35,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:52:35,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:52:36,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:52:36,210 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:52:36,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:52:36,241 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:52:36,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:36 WrapperNode [2020-09-24 21:52:36,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:52:36,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:52:36,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:52:36,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:52:36,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:36" (1/1) ... [2020-09-24 21:52:36,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:36" (1/1) ... [2020-09-24 21:52:36,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:36" (1/1) ... [2020-09-24 21:52:36,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:36" (1/1) ... [2020-09-24 21:52:36,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:36" (1/1) ... [2020-09-24 21:52:36,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:36" (1/1) ... [2020-09-24 21:52:36,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:36" (1/1) ... [2020-09-24 21:52:36,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:52:36,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:52:36,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:52:36,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:52:36,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:36" (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 21:52:36,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:52:36,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:52:36,419 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 21:52:36,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 21:52:36,420 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:52:36,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:52:36,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:52:36,420 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 21:52:36,421 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 21:52:36,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 21:52:36,421 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:52:36,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:52:36,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:52:36,655 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:52:36,655 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:52:36,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:52:36 BoogieIcfgContainer [2020-09-24 21:52:36,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:52:36,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:52:36,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:52:36,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:52:36,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:52:35" (1/3) ... [2020-09-24 21:52:36,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2584ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:52:36, skipping insertion in model container [2020-09-24 21:52:36,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:36" (2/3) ... [2020-09-24 21:52:36,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2584ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:52:36, skipping insertion in model container [2020-09-24 21:52:36,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:52:36" (3/3) ... [2020-09-24 21:52:36,671 INFO L109 eAbstractionObserver]: Analyzing ICFG loopv1.c [2020-09-24 21:52:36,683 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:52:36,693 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:52:36,716 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:52:36,747 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:52:36,747 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:52:36,748 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:52:36,748 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:52:36,748 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:52:36,748 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:52:36,748 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:52:36,748 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:52:36,769 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-24 21:52:36,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-24 21:52:36,776 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:52:36,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:52:36,778 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:52:36,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:52:36,785 INFO L82 PathProgramCache]: Analyzing trace with hash 177195790, now seen corresponding path program 1 times [2020-09-24 21:52:36,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:52:36,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431739329] [2020-09-24 21:52:36,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:52:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:36,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:36,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:37,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:37,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 21:52:37,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:52:37,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-24 21:52:37,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:37,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:52:37,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 21:52:37,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:52:37,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-09-24 21:52:37,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:37,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:37,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:37,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:52:37,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:37,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:52:37,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:37,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:37,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:37,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:37,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:52:37,349 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 21:52:37,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431739329] [2020-09-24 21:52:37,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:52:37,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:52:37,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191941316] [2020-09-24 21:52:37,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:52:37,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:37,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:52:37,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:52:37,396 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 6 states. [2020-09-24 21:52:37,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:52:37,697 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-09-24 21:52:37,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:52:37,700 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-09-24 21:52:37,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:52:37,710 INFO L225 Difference]: With dead ends: 46 [2020-09-24 21:52:37,710 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 21:52:37,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:52:37,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 21:52:37,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 21:52:37,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 21:52:37,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 21:52:37,751 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-09-24 21:52:37,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:52:37,751 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 21:52:37,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:52:37,752 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 21:52:37,752 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 21:52:37,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:52:37,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 21:52:37,840 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 21:52:37,840 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-09-24 21:52:37,841 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 21:52:37,841 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 21:52:37,841 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 21:52:37,841 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 21:52:37,841 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 21:52:37,841 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 7 9) no Hoare annotation was computed. [2020-09-24 21:52:37,842 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 21:52:37,842 INFO L268 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-09-24 21:52:37,842 INFO L268 CegarLoopResult]: For program point L8-3(lines 7 9) no Hoare annotation was computed. [2020-09-24 21:52:37,842 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2020-09-24 21:52:37,842 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 21:52:37,843 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 18 32) no Hoare annotation was computed. [2020-09-24 21:52:37,843 INFO L268 CegarLoopResult]: For program point L25-1(lines 25 28) no Hoare annotation was computed. [2020-09-24 21:52:37,843 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-24 21:52:37,843 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 21:52:37,843 INFO L268 CegarLoopResult]: For program point L25-4(line 25) no Hoare annotation was computed. [2020-09-24 21:52:37,844 INFO L264 CegarLoopResult]: At program point L23-2(lines 23 29) the Hoare annotation is: (= main_~i~0 (* (div main_~i~0 3) 3)) [2020-09-24 21:52:37,844 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-24 21:52:37,845 INFO L264 CegarLoopResult]: At program point L25-5(lines 23 29) the Hoare annotation is: (= main_~i~0 (* (div main_~i~0 3) 3)) [2020-09-24 21:52:37,845 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 21:52:37,846 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-24 21:52:37,847 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 18 32) no Hoare annotation was computed. [2020-09-24 21:52:37,847 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-24 21:52:37,849 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 18 32) the Hoare annotation is: true [2020-09-24 21:52:37,850 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-24 21:52:37,851 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-24 21:52:37,851 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 21:52:37,851 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-24 21:52:37,851 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 21:52:37,851 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-24 21:52:37,853 INFO L268 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed. [2020-09-24 21:52:37,853 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 10 15) the Hoare annotation is: true [2020-09-24 21:52:37,853 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 21:52:37,854 INFO L268 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-09-24 21:52:37,855 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 10 15) no Hoare annotation was computed. [2020-09-24 21:52:37,855 INFO L268 CegarLoopResult]: For program point L11-2(lines 10 15) no Hoare annotation was computed. [2020-09-24 21:52:37,855 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-09-24 21:52:37,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:52:37 BoogieIcfgContainer [2020-09-24 21:52:37,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:52:37,892 INFO L168 Benchmark]: Toolchain (without parser) took 1958.25 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.2 MB in the beginning and 111.2 MB in the end (delta: -9.0 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. [2020-09-24 21:52:37,902 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 21:52:37,904 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.18 ms. Allocated memory is still 140.5 MB. Free memory was 101.6 MB in the beginning and 91.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-24 21:52:37,907 INFO L168 Benchmark]: Boogie Preprocessor took 106.58 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 91.8 MB in the beginning and 181.6 MB in the end (delta: -89.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-24 21:52:37,910 INFO L168 Benchmark]: RCFGBuilder took 311.36 ms. Allocated memory is still 203.4 MB. Free memory was 181.6 MB in the beginning and 168.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-09-24 21:52:37,912 INFO L168 Benchmark]: TraceAbstraction took 1224.87 ms. Allocated memory is still 203.4 MB. Free memory was 168.0 MB in the beginning and 111.2 MB in the end (delta: 56.7 MB). Peak memory consumption was 56.7 MB. Max. memory is 7.1 GB. [2020-09-24 21:52:37,923 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 140.5 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 306.18 ms. Allocated memory is still 140.5 MB. Free memory was 101.6 MB in the beginning and 91.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.58 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 91.8 MB in the beginning and 181.6 MB in the end (delta: -89.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 311.36 ms. Allocated memory is still 203.4 MB. Free memory was 181.6 MB in the beginning and 168.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1224.87 ms. Allocated memory is still 203.4 MB. Free memory was 168.0 MB in the beginning and 111.2 MB in the end (delta: 56.7 MB). Peak memory consumption was 56.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: i == i / 3 * 3 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 37 SDslu, 29 SDs, 0 SdLazy, 73 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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, 21 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 21 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 792 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...