/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=WIDEST --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 [2020-09-25 03:28:58,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:28:58,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:28:58,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:28:58,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:28:58,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:28:58,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:28:58,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:28:58,836 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:28:58,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:28:58,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:28:58,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:28:58,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:28:58,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:28:58,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:28:58,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:28:58,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:28:58,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:28:58,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:28:58,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:28:58,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:28:58,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:28:58,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:28:58,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:28:58,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:28:58,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:28:58,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:28:58,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:28:58,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:28:58,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:28:58,865 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:28:58,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:28:58,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:28:58,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:28:58,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:28:58,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:28:58,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:28:58,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:28:58,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:28:58,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:28:58,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:28:58,872 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 03:28:58,899 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:28:58,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:28:58,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:28:58,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:28:58,901 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:28:58,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:28:58,902 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:28:58,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:28:58,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:28:58,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:28:58,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:28:58,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:28:58,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:28:58,903 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:28:58,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:28:58,903 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:28:58,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:28:58,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:28:58,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:28:58,904 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:28:58,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:28:58,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:28:58,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:28:58,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:28:58,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:28:58,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:28:58,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:28:58,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:28:58,909 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:28:58,909 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:28:59,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:28:59,401 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:28:59,405 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:28:59,407 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:28:59,407 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:28:59,408 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/loopv1.c [2020-09-25 03:28:59,483 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/659a749a6/941cebcdf6c34ee5b4a27c383be33e19/FLAG2e57f77e4 [2020-09-25 03:29:00,010 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:29:00,011 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/loopv1.c [2020-09-25 03:29:00,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/659a749a6/941cebcdf6c34ee5b4a27c383be33e19/FLAG2e57f77e4 [2020-09-25 03:29:00,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/659a749a6/941cebcdf6c34ee5b4a27c383be33e19 [2020-09-25 03:29:00,355 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:29:00,361 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:29:00,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:29:00,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:29:00,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:29:00,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:29:00" (1/1) ... [2020-09-25 03:29:00,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12755b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:00, skipping insertion in model container [2020-09-25 03:29:00,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:29:00" (1/1) ... [2020-09-25 03:29:00,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:29:00,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:29:00,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:29:00,610 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:29:00,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:29:00,661 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:29:00,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:00 WrapperNode [2020-09-25 03:29:00,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:29:00,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:29:00,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:29:00,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:29:00,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:00" (1/1) ... [2020-09-25 03:29:00,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:00" (1/1) ... [2020-09-25 03:29:00,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:00" (1/1) ... [2020-09-25 03:29:00,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:00" (1/1) ... [2020-09-25 03:29:00,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:00" (1/1) ... [2020-09-25 03:29:00,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:00" (1/1) ... [2020-09-25 03:29:00,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:00" (1/1) ... [2020-09-25 03:29:00,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:29:00,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:29:00,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:29:00,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:29:00,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:00" (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 03:29:00,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:29:00,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:29:00,852 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 03:29:00,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 03:29:00,852 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:29:00,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:29:00,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:29:00,853 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 03:29:00,853 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 03:29:00,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 03:29:00,854 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:29:00,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:29:00,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:29:01,087 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:29:01,087 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 03:29:01,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:29:01 BoogieIcfgContainer [2020-09-25 03:29:01,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:29:01,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:29:01,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:29:01,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:29:01,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:29:00" (1/3) ... [2020-09-25 03:29:01,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502ac47e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:29:01, skipping insertion in model container [2020-09-25 03:29:01,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:00" (2/3) ... [2020-09-25 03:29:01,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502ac47e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:29:01, skipping insertion in model container [2020-09-25 03:29:01,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:29:01" (3/3) ... [2020-09-25 03:29:01,101 INFO L109 eAbstractionObserver]: Analyzing ICFG loopv1.c [2020-09-25 03:29:01,113 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:29:01,123 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:29:01,143 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:29:01,173 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:29:01,173 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:29:01,174 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:29:01,174 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:29:01,174 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:29:01,174 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:29:01,174 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:29:01,175 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:29:01,198 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-25 03:29:01,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 03:29:01,205 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:29:01,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:29:01,207 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:29:01,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:29:01,213 INFO L82 PathProgramCache]: Analyzing trace with hash 177195790, now seen corresponding path program 1 times [2020-09-25 03:29:01,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:29:01,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597414574] [2020-09-25 03:29:01,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:29:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:01,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:01,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:01,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:01,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 03:29:01,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:29:01,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-09-25 03:29:01,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:01,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:29:01,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:29:01,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:29:01,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:29:01,855 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 5 [2020-09-25 03:29:01,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:29:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:01,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:01,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:01,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 03:29:01,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:29:01,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:29:01,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:01,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:29:01,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:29:01,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:29:01,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:29:01,898 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 03:29:01,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597414574] [2020-09-25 03:29:01,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:29:01,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:29:01,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951632255] [2020-09-25 03:29:01,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:29:01,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:29:01,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:29:01,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:29:01,927 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 6 states. [2020-09-25 03:29:02,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:29:02,180 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-09-25 03:29:02,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:29:02,182 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-09-25 03:29:02,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:29:02,193 INFO L225 Difference]: With dead ends: 46 [2020-09-25 03:29:02,193 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 03:29:02,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:29:02,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 03:29:02,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 03:29:02,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 03:29:02,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 03:29:02,246 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-09-25 03:29:02,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:29:02,246 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 03:29:02,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:29:02,247 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 03:29:02,247 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 03:29:02,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:29:02,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 03:29:02,343 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 03:29:02,343 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-09-25 03:29:02,343 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 03:29:02,344 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 03:29:02,344 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 03:29:02,344 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 03:29:02,344 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 03:29:02,344 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 7 9) no Hoare annotation was computed. [2020-09-25 03:29:02,344 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 03:29:02,345 INFO L268 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-09-25 03:29:02,346 INFO L268 CegarLoopResult]: For program point L8-3(lines 7 9) no Hoare annotation was computed. [2020-09-25 03:29:02,346 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2020-09-25 03:29:02,346 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 03:29:02,346 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 18 32) no Hoare annotation was computed. [2020-09-25 03:29:02,346 INFO L268 CegarLoopResult]: For program point L25-1(lines 25 28) no Hoare annotation was computed. [2020-09-25 03:29:02,347 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-25 03:29:02,347 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 03:29:02,347 INFO L268 CegarLoopResult]: For program point L25-4(line 25) no Hoare annotation was computed. [2020-09-25 03:29:02,348 INFO L264 CegarLoopResult]: At program point L23-2(lines 23 29) the Hoare annotation is: (= main_~i~0 (* (div main_~i~0 3) 3)) [2020-09-25 03:29:02,348 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-25 03:29:02,349 INFO L264 CegarLoopResult]: At program point L25-5(lines 23 29) the Hoare annotation is: (= main_~i~0 (* (div main_~i~0 3) 3)) [2020-09-25 03:29:02,349 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 03:29:02,349 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-25 03:29:02,350 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 18 32) no Hoare annotation was computed. [2020-09-25 03:29:02,350 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-25 03:29:02,352 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 18 32) the Hoare annotation is: true [2020-09-25 03:29:02,353 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 03:29:02,355 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-25 03:29:02,356 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 03:29:02,356 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-25 03:29:02,356 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 03:29:02,356 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-25 03:29:02,357 INFO L268 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed. [2020-09-25 03:29:02,357 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 10 15) the Hoare annotation is: true [2020-09-25 03:29:02,357 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 03:29:02,357 INFO L268 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-09-25 03:29:02,357 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 10 15) no Hoare annotation was computed. [2020-09-25 03:29:02,357 INFO L268 CegarLoopResult]: For program point L11-2(lines 10 15) no Hoare annotation was computed. [2020-09-25 03:29:02,358 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-09-25 03:29:02,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:29:02 BoogieIcfgContainer [2020-09-25 03:29:02,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 03:29:02,396 INFO L168 Benchmark]: Toolchain (without parser) took 2036.62 ms. Allocated memory was 107.5 MB in the beginning and 183.5 MB in the end (delta: 76.0 MB). Free memory was 73.1 MB in the beginning and 153.0 MB in the end (delta: -80.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 03:29:02,399 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 107.5 MB. Free memory was 90.2 MB in the beginning and 90.1 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. [2020-09-25 03:29:02,401 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.02 ms. Allocated memory was 107.5 MB in the beginning and 122.7 MB in the end (delta: 15.2 MB). Free memory was 72.5 MB in the beginning and 100.0 MB in the end (delta: -27.5 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. [2020-09-25 03:29:02,405 INFO L168 Benchmark]: Boogie Preprocessor took 104.01 ms. Allocated memory was 122.7 MB in the beginning and 156.2 MB in the end (delta: 33.6 MB). Free memory was 100.0 MB in the beginning and 142.3 MB in the end (delta: -42.3 MB). Peak memory consumption was 746.2 kB. Max. memory is 7.1 GB. [2020-09-25 03:29:02,405 INFO L168 Benchmark]: RCFGBuilder took 324.71 ms. Allocated memory is still 156.2 MB. Free memory was 142.3 MB in the beginning and 128.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-09-25 03:29:02,406 INFO L168 Benchmark]: TraceAbstraction took 1298.25 ms. Allocated memory was 156.2 MB in the beginning and 183.5 MB in the end (delta: 27.3 MB). Free memory was 128.4 MB in the beginning and 153.0 MB in the end (delta: -24.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-25 03:29:02,416 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 107.5 MB. Free memory was 90.2 MB in the beginning and 90.1 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 300.02 ms. Allocated memory was 107.5 MB in the beginning and 122.7 MB in the end (delta: 15.2 MB). Free memory was 72.5 MB in the beginning and 100.0 MB in the end (delta: -27.5 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.01 ms. Allocated memory was 122.7 MB in the beginning and 156.2 MB in the end (delta: 33.6 MB). Free memory was 100.0 MB in the beginning and 142.3 MB in the end (delta: -42.3 MB). Peak memory consumption was 746.2 kB. Max. memory is 7.1 GB. * RCFGBuilder took 324.71 ms. Allocated memory is still 156.2 MB. Free memory was 142.3 MB in the beginning and 128.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1298.25 ms. Allocated memory was 156.2 MB in the beginning and 183.5 MB in the end (delta: 27.3 MB). Free memory was 128.4 MB in the beginning and 153.0 MB in the end (delta: -24.6 MB). Peak memory consumption was 2.6 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: 0.2s, 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, 0.2s 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, 0.5s 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...