/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum03-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:30:30,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:30:30,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:30:30,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:30:30,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:30:30,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:30:30,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:30:30,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:30:30,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:30:30,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:30:30,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:30:30,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:30:30,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:30:30,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:30:30,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:30:30,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:30:30,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:30:30,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:30:30,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:30:30,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:30:30,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:30:30,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:30:30,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:30:30,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:30:30,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 04:30:30,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:30:30,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:30:30,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:30:30,963 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 [2020-08-19 04:30:31,016 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:30:31,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:30:31,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:30:31,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:30:31,020 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:30:31,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:30:31,020 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:30:31,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:30:31,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:30:31,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:30:31,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:30:31,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:30:31,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:30:31,024 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:30:31,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:30:31,024 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:30:31,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:30:31,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:30:31,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:30:31,026 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:30:31,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:30:31,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:30:31,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:30:31,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:30:31,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:30:31,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:30:31,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:30:31,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:30:31,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:30:31,027 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=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:30:31,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:30:31,370 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:30:31,374 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:30:31,376 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:30:31,376 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:30:31,377 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum03-2.i [2020-08-19 04:30:31,443 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffb2150e2/3500cc6e2c8f420ab7e104aa77dbd1a8/FLAGafc530dcc [2020-08-19 04:30:31,875 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:30:31,876 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum03-2.i [2020-08-19 04:30:31,882 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffb2150e2/3500cc6e2c8f420ab7e104aa77dbd1a8/FLAGafc530dcc [2020-08-19 04:30:32,262 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffb2150e2/3500cc6e2c8f420ab7e104aa77dbd1a8 [2020-08-19 04:30:32,271 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:30:32,273 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:30:32,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:30:32,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:30:32,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:30:32,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:30:32" (1/1) ... [2020-08-19 04:30:32,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18283abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:30:32, skipping insertion in model container [2020-08-19 04:30:32,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:30:32" (1/1) ... [2020-08-19 04:30:32,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:30:32,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:30:32,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:30:32,474 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:30:32,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:30:32,500 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:30:32,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:30:32 WrapperNode [2020-08-19 04:30:32,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:30:32,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:30:32,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:30:32,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:30:32,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:30:32" (1/1) ... [2020-08-19 04:30:32,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:30:32" (1/1) ... [2020-08-19 04:30:32,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:30:32" (1/1) ... [2020-08-19 04:30:32,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:30:32" (1/1) ... [2020-08-19 04:30:32,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:30:32" (1/1) ... [2020-08-19 04:30:32,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:30:32" (1/1) ... [2020-08-19 04:30:32,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:30:32" (1/1) ... [2020-08-19 04:30:32,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:30:32,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:30:32,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:30:32,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:30:32,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:30:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:30:32,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:30:32,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:30:32,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 04:30:32,699 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:30:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:30:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 04:30:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-19 04:30:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:30:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:30:32,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:30:32,879 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:30:32,880 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 04:30:32,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:30:32 BoogieIcfgContainer [2020-08-19 04:30:32,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:30:32,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:30:32,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:30:32,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:30:32,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:30:32" (1/3) ... [2020-08-19 04:30:32,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c016d45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:30:32, skipping insertion in model container [2020-08-19 04:30:32,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:30:32" (2/3) ... [2020-08-19 04:30:32,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c016d45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:30:32, skipping insertion in model container [2020-08-19 04:30:32,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:30:32" (3/3) ... [2020-08-19 04:30:32,892 INFO L109 eAbstractionObserver]: Analyzing ICFG sum03-2.i [2020-08-19 04:30:32,903 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:30:32,910 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:30:32,923 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:30:32,948 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:30:32,948 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:30:32,948 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:30:32,948 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:30:32,949 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:30:32,949 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:30:32,949 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:30:32,949 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:30:32,965 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-08-19 04:30:32,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-19 04:30:32,971 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:30:32,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:30:32,972 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:30:32,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:30:32,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1847991872, now seen corresponding path program 1 times [2020-08-19 04:30:32,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:30:32,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759196072] [2020-08-19 04:30:32,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:30:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:30:33,390 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-08-19 04:30:33,538 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 20 [2020-08-19 04:30:33,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:30:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:30:33,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:30:33,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759196072] [2020-08-19 04:30:33,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:30:33,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 04:30:33,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076827551] [2020-08-19 04:30:33,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 04:30:33,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:30:33,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 04:30:33,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:30:33,611 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 6 states. [2020-08-19 04:30:33,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:30:33,676 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2020-08-19 04:30:33,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:30:33,678 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-08-19 04:30:33,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:30:33,686 INFO L225 Difference]: With dead ends: 23 [2020-08-19 04:30:33,687 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 04:30:33,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-19 04:30:33,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 04:30:33,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 04:30:33,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 04:30:33,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 04:30:33,717 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-08-19 04:30:33,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:30:33,717 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 04:30:33,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 04:30:33,718 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 04:30:33,718 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 04:30:33,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:30:33,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 04:30:33,777 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-19 04:30:33,777 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 04:30:33,777 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 04:30:33,777 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 04:30:33,778 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 04:30:33,778 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 04:30:33,778 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 9 18) the Hoare annotation is: true [2020-08-19 04:30:33,779 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 9 18) no Hoare annotation was computed. [2020-08-19 04:30:33,779 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (let ((.cse0 (* 2 main_~x~0))) (and (<= .cse0 main_~sn~0) (<= main_~sn~0 .cse0))) [2020-08-19 04:30:33,779 INFO L264 CegarLoopResult]: At program point L16-1(lines 13 17) the Hoare annotation is: (let ((.cse0 (* 2 main_~x~0))) (and (<= .cse0 main_~sn~0) (<= main_~sn~0 .cse0))) [2020-08-19 04:30:33,779 INFO L268 CegarLoopResult]: For program point L13-2(lines 9 18) no Hoare annotation was computed. [2020-08-19 04:30:33,780 INFO L268 CegarLoopResult]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2020-08-19 04:30:33,780 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2020-08-19 04:30:33,780 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2020-08-19 04:30:33,780 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-19 04:30:33,780 INFO L268 CegarLoopResult]: For program point L3(lines 3 5) no Hoare annotation was computed. [2020-08-19 04:30:33,781 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-08-19 04:30:33,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:30:33 BoogieIcfgContainer [2020-08-19 04:30:33,804 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:30:33,807 INFO L168 Benchmark]: Toolchain (without parser) took 1533.71 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 102.9 MB in the beginning and 132.6 MB in the end (delta: -29.7 MB). Peak memory consumption was 34.3 MB. Max. memory is 7.1 GB. [2020-08-19 04:30:33,808 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-19 04:30:33,809 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.16 ms. Allocated memory is still 139.5 MB. Free memory was 102.5 MB in the beginning and 93.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-08-19 04:30:33,810 INFO L168 Benchmark]: Boogie Preprocessor took 131.53 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 93.2 MB in the beginning and 182.5 MB in the end (delta: -89.3 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-19 04:30:33,811 INFO L168 Benchmark]: RCFGBuilder took 250.95 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 170.1 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-19 04:30:33,812 INFO L168 Benchmark]: TraceAbstraction took 919.47 ms. Allocated memory is still 203.4 MB. Free memory was 169.4 MB in the beginning and 132.6 MB in the end (delta: 36.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. [2020-08-19 04:30:33,817 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 227.16 ms. Allocated memory is still 139.5 MB. Free memory was 102.5 MB in the beginning and 93.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.53 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 93.2 MB in the beginning and 182.5 MB in the end (delta: -89.3 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 250.95 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 170.1 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 919.47 ms. Allocated memory is still 203.4 MB. Free memory was 169.4 MB in the beginning and 132.6 MB in the end (delta: 36.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 2 * x <= sn && sn <= 2 * x - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 SDtfs, 5 SDslu, 23 SDs, 0 SdLazy, 12 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 10 NumberOfFragments, 27 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 675 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...