/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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/terminator_02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 06:24:12,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:24:12,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:24:12,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:24:12,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:24:12,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:24:12,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:24:12,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:24:12,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:24:12,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:24:12,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:24:12,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:24:12,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:24:12,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:24:12,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:24:12,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:24:12,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:24:12,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:24:12,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:24:12,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:24:12,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:24:12,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:24:12,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:24:12,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:24:12,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:24:12,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:24:12,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:24:12,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:24:12,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:24:12,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 06:24:12,879 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 06:24:12,880 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 06:24:12,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 06:24:12,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 06:24:12,883 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 06:24:12,883 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 06:24:12,884 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 06:24:12,884 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 06:24:12,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:24:12,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:24:12,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:24:12,886 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 [2020-08-22 06:24:12,929 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:24:12,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:24:12,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:24:12,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:24:12,933 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:24:12,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:24:12,934 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:24:12,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:24:12,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:24:12,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:24:12,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:24:12,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:24:12,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:24:12,935 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:24:12,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:24:12,936 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:24:12,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:24:12,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:24:12,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:24:12,940 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:24:12,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:24:12,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:24:12,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:24:12,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:24:12,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:24:12,942 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:24:12,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:24:12,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:24:12,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:24:12,943 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-08-22 06:24:13,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:24:13,262 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:24:13,267 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:24:13,269 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:24:13,269 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:24:13,270 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02-2.c [2020-08-22 06:24:13,341 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62ca96b77/861e39a0d7a24f7f9b8ccdac8f0b98dd/FLAG364108681 [2020-08-22 06:24:13,822 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:24:13,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/terminator_02-2.c [2020-08-22 06:24:13,831 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62ca96b77/861e39a0d7a24f7f9b8ccdac8f0b98dd/FLAG364108681 [2020-08-22 06:24:14,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62ca96b77/861e39a0d7a24f7f9b8ccdac8f0b98dd [2020-08-22 06:24:14,315 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:24:14,317 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:24:14,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:24:14,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:24:14,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:24:14,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:24:14" (1/1) ... [2020-08-22 06:24:14,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4839a71c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:14, skipping insertion in model container [2020-08-22 06:24:14,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:24:14" (1/1) ... [2020-08-22 06:24:14,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:24:14,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:24:14,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:24:14,532 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:24:14,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:24:14,584 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:24:14,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:14 WrapperNode [2020-08-22 06:24:14,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:24:14,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:24:14,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:24:14,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:24:14,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:14" (1/1) ... [2020-08-22 06:24:14,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:14" (1/1) ... [2020-08-22 06:24:14,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:14" (1/1) ... [2020-08-22 06:24:14,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:14" (1/1) ... [2020-08-22 06:24:14,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:14" (1/1) ... [2020-08-22 06:24:14,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:14" (1/1) ... [2020-08-22 06:24:14,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:14" (1/1) ... [2020-08-22 06:24:14,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:24:14,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:24:14,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:24:14,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:24:14,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:14" (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 [2020-08-22 06:24:14,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:24:14,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:24:14,787 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 06:24:14,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 06:24:14,787 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:24:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:24:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 06:24:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 06:24:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 06:24:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 06:24:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-22 06:24:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:24:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:24:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:24:14,995 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:24:14,995 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 06:24:14,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:24:14 BoogieIcfgContainer [2020-08-22 06:24:14,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:24:15,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:24:15,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:24:15,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:24:15,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:24:14" (1/3) ... [2020-08-22 06:24:15,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c18f39c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:24:15, skipping insertion in model container [2020-08-22 06:24:15,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:14" (2/3) ... [2020-08-22 06:24:15,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c18f39c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:24:15, skipping insertion in model container [2020-08-22 06:24:15,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:24:14" (3/3) ... [2020-08-22 06:24:15,007 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_02-2.c [2020-08-22 06:24:15,018 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:24:15,026 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:24:15,058 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:24:15,119 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:24:15,120 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:24:15,120 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:24:15,120 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:24:15,120 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:24:15,121 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:24:15,121 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:24:15,121 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:24:15,148 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-08-22 06:24:15,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 06:24:15,154 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:24:15,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:24:15,155 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:24:15,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:24:15,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1447361753, now seen corresponding path program 1 times [2020-08-22 06:24:15,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:24:15,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775484452] [2020-08-22 06:24:15,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:24:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:15,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:24:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:15,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:24:15,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775484452] [2020-08-22 06:24:15,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:24:15,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 06:24:15,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549761158] [2020-08-22 06:24:15,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 06:24:15,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:24:15,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 06:24:15,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:24:15,430 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 6 states. [2020-08-22 06:24:15,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:24:15,613 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2020-08-22 06:24:15,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 06:24:15,615 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-08-22 06:24:15,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:24:15,624 INFO L225 Difference]: With dead ends: 48 [2020-08-22 06:24:15,624 INFO L226 Difference]: Without dead ends: 17 [2020-08-22 06:24:15,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:24:15,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-08-22 06:24:15,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-08-22 06:24:15,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-08-22 06:24:15,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-08-22 06:24:15,668 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2020-08-22 06:24:15,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:24:15,669 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-08-22 06:24:15,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 06:24:15,669 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-08-22 06:24:15,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 06:24:15,670 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:24:15,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:24:15,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:24:15,671 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:24:15,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:24:15,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1757797730, now seen corresponding path program 1 times [2020-08-22 06:24:15,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:24:15,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408270548] [2020-08-22 06:24:15,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:24:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:15,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:24:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:15,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 06:24:15,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408270548] [2020-08-22 06:24:15,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:24:15,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 06:24:15,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429131070] [2020-08-22 06:24:15,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 06:24:15,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:24:15,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 06:24:15,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:24:15,775 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 5 states. [2020-08-22 06:24:15,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:24:15,824 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-08-22 06:24:15,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 06:24:15,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-22 06:24:15,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:24:15,826 INFO L225 Difference]: With dead ends: 17 [2020-08-22 06:24:15,826 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 06:24:15,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:24:15,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 06:24:15,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 06:24:15,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 06:24:15,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 06:24:15,830 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-08-22 06:24:15,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:24:15,830 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 06:24:15,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 06:24:15,830 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 06:24:15,831 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 06:24:15,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:24:15,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 06:24:15,876 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 06:24:15,877 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 06:24:15,877 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 06:24:15,878 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 06:24:15,878 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 06:24:15,878 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 06:24:15,879 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-08-22 06:24:15,879 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-22 06:24:15,879 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-08-22 06:24:15,879 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-08-22 06:24:15,880 INFO L268 CegarLoopResult]: For program point L27(lines 27 32) no Hoare annotation was computed. [2020-08-22 06:24:15,880 INFO L271 CegarLoopResult]: At program point L27-2(lines 24 33) the Hoare annotation is: true [2020-08-22 06:24:15,880 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 16 38) no Hoare annotation was computed. [2020-08-22 06:24:15,880 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-08-22 06:24:15,880 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-08-22 06:24:15,881 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 16 38) no Hoare annotation was computed. [2020-08-22 06:24:15,881 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 16 38) the Hoare annotation is: true [2020-08-22 06:24:15,881 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-08-22 06:24:15,881 INFO L264 CegarLoopResult]: At program point L24-2(lines 24 33) the Hoare annotation is: (or (<= main_~z~0 100) (< 99 main_~x~0)) [2020-08-22 06:24:15,881 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-08-22 06:24:15,882 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-08-22 06:24:15,882 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 7 12) the Hoare annotation is: true [2020-08-22 06:24:15,882 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 7 12) no Hoare annotation was computed. [2020-08-22 06:24:15,882 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-08-22 06:24:15,883 INFO L268 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-08-22 06:24:15,883 INFO L268 CegarLoopResult]: For program point L8-2(lines 7 12) no Hoare annotation was computed. [2020-08-22 06:24:15,883 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-08-22 06:24:15,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:24:15 BoogieIcfgContainer [2020-08-22 06:24:15,894 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 06:24:15,897 INFO L168 Benchmark]: Toolchain (without parser) took 1579.95 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 103.4 MB in the beginning and 120.5 MB in the end (delta: -17.2 MB). Peak memory consumption was 45.7 MB. Max. memory is 7.1 GB. [2020-08-22 06:24:15,898 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 06:24:15,899 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.86 ms. Allocated memory is still 140.0 MB. Free memory was 103.1 MB in the beginning and 93.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-22 06:24:15,901 INFO L168 Benchmark]: Boogie Preprocessor took 133.46 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 93.4 MB in the beginning and 180.9 MB in the end (delta: -87.5 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-08-22 06:24:15,902 INFO L168 Benchmark]: RCFGBuilder took 278.80 ms. Allocated memory is still 202.9 MB. Free memory was 180.9 MB in the beginning and 167.3 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-08-22 06:24:15,902 INFO L168 Benchmark]: TraceAbstraction took 894.65 ms. Allocated memory is still 202.9 MB. Free memory was 166.6 MB in the beginning and 120.5 MB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 7.1 GB. [2020-08-22 06:24:15,907 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 267.86 ms. Allocated memory is still 140.0 MB. Free memory was 103.1 MB in the beginning and 93.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.46 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 93.4 MB in the beginning and 180.9 MB in the end (delta: -87.5 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 278.80 ms. Allocated memory is still 202.9 MB. Free memory was 180.9 MB in the beginning and 167.3 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 894.65 ms. Allocated memory is still 202.9 MB. Free memory was 166.6 MB in the beginning and 120.5 MB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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: 24]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 15 SDslu, 124 SDs, 0 SdLazy, 52 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 13 HoareAnnotationTreeSize, 9 FomulaSimplifications, 7 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 730 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 1/1 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...