/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=NARROWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:56:01,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:56:01,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:56:01,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:56:01,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:56:01,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:56:01,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:56:01,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:56:01,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:56:01,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:56:01,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:56:01,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:56:01,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:56:01,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:56:01,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:56:01,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:56:01,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:56:01,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:56:01,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:56:01,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:56:01,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:56:01,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:56:01,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:56:01,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:56:01,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 21:56:01,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:56:01,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:56:01,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:56:01,160 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 [2020-08-18 21:56:01,202 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:56:01,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:56:01,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:56:01,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:56:01,205 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:56:01,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:56:01,205 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:56:01,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:56:01,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:56:01,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:56:01,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:56:01,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:56:01,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:56:01,208 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:56:01,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:56:01,208 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:56:01,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:56:01,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:56:01,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:56:01,209 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:56:01,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:56:01,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:56:01,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:56:01,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:56:01,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:56:01,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:56:01,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:56:01,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:56:01,211 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:56:01,211 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=NARROWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; [2020-08-18 21:56:01,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:56:01,497 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:56:01,500 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:56:01,502 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:56:01,502 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:56:01,503 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test18.c [2020-08-18 21:56:01,577 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f4bbc5e3/685ebb43a3c84b9287fe8033034b53e5/FLAGf8e286f2b [2020-08-18 21:56:02,051 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:56:02,052 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test18.c [2020-08-18 21:56:02,057 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f4bbc5e3/685ebb43a3c84b9287fe8033034b53e5/FLAGf8e286f2b [2020-08-18 21:56:02,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f4bbc5e3/685ebb43a3c84b9287fe8033034b53e5 [2020-08-18 21:56:02,559 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:56:02,561 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:56:02,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:56:02,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:56:02,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:56:02,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:56:02" (1/1) ... [2020-08-18 21:56:02,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678b2c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:56:02, skipping insertion in model container [2020-08-18 21:56:02,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:56:02" (1/1) ... [2020-08-18 21:56:02,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:56:02,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:56:02,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:56:02,798 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:56:02,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:56:02,831 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:56:02,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:56:02 WrapperNode [2020-08-18 21:56:02,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:56:02,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:56:02,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:56:02,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:56:02,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:56:02" (1/1) ... [2020-08-18 21:56:02,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:56:02" (1/1) ... [2020-08-18 21:56:02,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:56:02" (1/1) ... [2020-08-18 21:56:02,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:56:02" (1/1) ... [2020-08-18 21:56:02,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:56:02" (1/1) ... [2020-08-18 21:56:02,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:56:02" (1/1) ... [2020-08-18 21:56:02,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:56:02" (1/1) ... [2020-08-18 21:56:02,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:56:02,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:56:02,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:56:02,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:56:02,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:56:02" (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 [2020-08-18 21:56:03,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:56:03,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:56:03,014 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2020-08-18 21:56:03,014 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-08-18 21:56:03,015 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:56:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:56:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure g [2020-08-18 21:56:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 21:56:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 21:56:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-08-18 21:56:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 21:56:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 21:56:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 21:56:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:56:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 21:56:03,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:56:03,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:56:03,248 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:56:03,248 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 21:56:03,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:56:03 BoogieIcfgContainer [2020-08-18 21:56:03,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:56:03,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:56:03,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:56:03,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:56:03,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:56:02" (1/3) ... [2020-08-18 21:56:03,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f8699c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:56:03, skipping insertion in model container [2020-08-18 21:56:03,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:56:02" (2/3) ... [2020-08-18 21:56:03,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f8699c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:56:03, skipping insertion in model container [2020-08-18 21:56:03,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:56:03" (3/3) ... [2020-08-18 21:56:03,260 INFO L109 eAbstractionObserver]: Analyzing ICFG test18.c [2020-08-18 21:56:03,274 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:56:03,283 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:56:03,298 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:56:03,361 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:56:03,362 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:56:03,365 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:56:03,365 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:56:03,365 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:56:03,365 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:56:03,366 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:56:03,366 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:56:03,398 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-08-18 21:56:03,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 21:56:03,406 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:56:03,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:56:03,407 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:56:03,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:56:03,412 INFO L82 PathProgramCache]: Analyzing trace with hash 731851180, now seen corresponding path program 1 times [2020-08-18 21:56:03,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:56:03,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258674539] [2020-08-18 21:56:03,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:56:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:03,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:56:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:03,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:56:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:03,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:56:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:03,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:56:03,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258674539] [2020-08-18 21:56:03,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:56:03,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 21:56:03,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860365997] [2020-08-18 21:56:03,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 21:56:03,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:56:03,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 21:56:03,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-08-18 21:56:03,964 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 11 states. [2020-08-18 21:56:04,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:56:04,209 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2020-08-18 21:56:04,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 21:56:04,212 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-08-18 21:56:04,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:56:04,220 INFO L225 Difference]: With dead ends: 27 [2020-08-18 21:56:04,221 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 21:56:04,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-08-18 21:56:04,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 21:56:04,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 21:56:04,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 21:56:04,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 21:56:04,255 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-08-18 21:56:04,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:56:04,256 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 21:56:04,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 21:56:04,256 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 21:56:04,257 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 21:56:04,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:56:04,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 21:56:04,402 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-18 21:56:04,403 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-08-18 21:56:04,403 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 21:56:04,403 INFO L264 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: (and (= (select (select |#memory_$Pointer$.offset| |f_~#pb.base|) |f_~#pb.offset|) |f_#in~pb.offset|) (= (select (select |#memory_$Pointer$.base| |f_~#pb.base|) |f_~#pb.offset|) |f_#in~pb.base|)) [2020-08-18 21:56:04,403 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-08-18 21:56:04,403 INFO L268 CegarLoopResult]: For program point fEXIT(lines 8 11) no Hoare annotation was computed. [2020-08-18 21:56:04,404 INFO L264 CegarLoopResult]: At program point fENTRY(lines 8 11) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-08-18 21:56:04,404 INFO L268 CegarLoopResult]: For program point fFINAL(lines 8 11) no Hoare annotation was computed. [2020-08-18 21:56:04,404 INFO L268 CegarLoopResult]: For program point gEXIT(lines 4 6) no Hoare annotation was computed. [2020-08-18 21:56:04,404 INFO L268 CegarLoopResult]: For program point gFINAL(lines 4 6) no Hoare annotation was computed. [2020-08-18 21:56:04,404 INFO L264 CegarLoopResult]: At program point gENTRY(lines 4 6) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) [2020-08-18 21:56:04,405 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 21:56:04,405 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 21:56:04,405 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 21:56:04,405 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 21:56:04,405 INFO L264 CegarLoopResult]: At program point L17(lines 13 24) the Hoare annotation is: false [2020-08-18 21:56:04,405 INFO L268 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-08-18 21:56:04,406 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 22) no Hoare annotation was computed. [2020-08-18 21:56:04,406 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) [2020-08-18 21:56:04,406 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-08-18 21:56:04,406 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 13 24) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-08-18 21:56:04,406 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 24) no Hoare annotation was computed. [2020-08-18 21:56:04,407 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 24) no Hoare annotation was computed. [2020-08-18 21:56:04,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:56:04 BoogieIcfgContainer [2020-08-18 21:56:04,418 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 21:56:04,421 INFO L168 Benchmark]: Toolchain (without parser) took 1859.02 ms. Allocated memory was 140.5 MB in the beginning and 235.4 MB in the end (delta: 94.9 MB). Free memory was 102.2 MB in the beginning and 194.2 MB in the end (delta: -92.0 MB). Peak memory consumption was 80.6 MB. Max. memory is 7.1 GB. [2020-08-18 21:56:04,422 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 21:56:04,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.46 ms. Allocated memory is still 140.5 MB. Free memory was 102.0 MB in the beginning and 92.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-18 21:56:04,424 INFO L168 Benchmark]: Boogie Preprocessor took 110.83 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 92.3 MB in the beginning and 181.4 MB in the end (delta: -89.2 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-18 21:56:04,425 INFO L168 Benchmark]: RCFGBuilder took 308.28 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 165.3 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2020-08-18 21:56:04,429 INFO L168 Benchmark]: TraceAbstraction took 1164.91 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 164.6 MB in the beginning and 194.2 MB in the end (delta: -29.6 MB). Peak memory consumption was 80.1 MB. Max. memory is 7.1 GB. [2020-08-18 21:56:04,439 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 270.46 ms. Allocated memory is still 140.5 MB. Free memory was 102.0 MB in the beginning and 92.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.83 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 92.3 MB in the beginning and 181.4 MB in the end (delta: -89.2 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 308.28 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 165.3 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1164.91 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 164.6 MB in the beginning and 194.2 MB in the end (delta: -29.6 MB). Peak memory consumption was 80.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: 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: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 3 SDslu, 45 SDs, 0 SdLazy, 105 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 80 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 36 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 2414 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...