/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:08:04,303 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-09-24 15:08:04,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:08:04,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:08:04,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:08:04,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:08:04,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:08:04,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:08:04,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:08:04,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:08:04,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:08:04,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:08:04,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:08:04,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:08:04,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 15:08:04,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:08:04,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:08:04,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:08:04,387 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 15:08:04,415 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:08:04,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:08:04,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:08:04,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:08:04,417 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:08:04,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:08:04,418 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:08:04,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:08:04,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:08:04,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:08:04,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:08:04,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:08:04,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:08:04,419 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:08:04,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:08:04,420 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:08:04,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:08:04,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:08:04,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:08:04,420 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:08:04,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:08:04,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:08:04,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:08:04,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:08:04,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:08:04,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:08:04,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:08:04,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:08:04,422 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:08:04,423 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 15:08:04,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:08:04,930 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:08:04,937 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:08:04,939 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:08:04,939 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:08:04,942 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i [2020-09-24 15:08:05,021 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8745ecef/4d71fff3647245f4b1ff673d0407ae63/FLAGb3b26ff79 [2020-09-24 15:08:05,542 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:08:05,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i [2020-09-24 15:08:05,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8745ecef/4d71fff3647245f4b1ff673d0407ae63/FLAGb3b26ff79 [2020-09-24 15:08:05,879 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8745ecef/4d71fff3647245f4b1ff673d0407ae63 [2020-09-24 15:08:05,892 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:08:05,897 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:08:05,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:08:05,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:08:05,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:08:05,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:08:05" (1/1) ... [2020-09-24 15:08:05,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa107a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:08:05, skipping insertion in model container [2020-09-24 15:08:05,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:08:05" (1/1) ... [2020-09-24 15:08:05,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:08:05,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:08:06,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:08:06,260 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:08:06,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:08:06,299 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:08:06,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:08:06 WrapperNode [2020-09-24 15:08:06,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:08:06,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:08:06,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:08:06,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:08:06,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:08:06" (1/1) ... [2020-09-24 15:08:06,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:08:06" (1/1) ... [2020-09-24 15:08:06,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:08:06" (1/1) ... [2020-09-24 15:08:06,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:08:06" (1/1) ... [2020-09-24 15:08:06,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:08:06" (1/1) ... [2020-09-24 15:08:06,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:08:06" (1/1) ... [2020-09-24 15:08:06,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:08:06" (1/1) ... [2020-09-24 15:08:06,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:08:06,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:08:06,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:08:06,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:08:06,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:08:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:08:06,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:08:06,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:08:06,500 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 15:08:06,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 15:08:06,501 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:08:06,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:08:06,501 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 15:08:06,503 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 15:08:06,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 15:08:06,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 15:08:06,503 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:08:06,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:08:06,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:08:06,853 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:08:06,853 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 15:08:06,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:08:06 BoogieIcfgContainer [2020-09-24 15:08:06,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:08:06,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:08:06,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:08:06,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:08:06,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:08:05" (1/3) ... [2020-09-24 15:08:06,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e562b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:08:06, skipping insertion in model container [2020-09-24 15:08:06,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:08:06" (2/3) ... [2020-09-24 15:08:06,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e562b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:08:06, skipping insertion in model container [2020-09-24 15:08:06,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:08:06" (3/3) ... [2020-09-24 15:08:06,874 INFO L109 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok.i [2020-09-24 15:08:06,885 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:08:06,895 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:08:06,917 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:08:06,957 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:08:06,957 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:08:06,957 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:08:06,958 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:08:06,958 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:08:06,958 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:08:06,958 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:08:06,958 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:08:06,985 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-09-24 15:08:06,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 15:08:06,994 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:08:06,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:08:06,996 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:08:07,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:08:07,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1281286412, now seen corresponding path program 1 times [2020-09-24 15:08:07,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:08:07,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994879969] [2020-09-24 15:08:07,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:08:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:07,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:08:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:07,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:08:07,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994879969] [2020-09-24 15:08:07,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:08:07,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 15:08:07,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208711372] [2020-09-24 15:08:07,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 15:08:07,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:08:07,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 15:08:07,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:08:07,366 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 7 states. [2020-09-24 15:08:07,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:08:07,574 INFO L93 Difference]: Finished difference Result 77 states and 93 transitions. [2020-09-24 15:08:07,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 15:08:07,576 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-09-24 15:08:07,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:08:07,589 INFO L225 Difference]: With dead ends: 77 [2020-09-24 15:08:07,589 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 15:08:07,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-24 15:08:07,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 15:08:07,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-09-24 15:08:07,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-24 15:08:07,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2020-09-24 15:08:07,652 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 37 [2020-09-24 15:08:07,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:08:07,653 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2020-09-24 15:08:07,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 15:08:07,653 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2020-09-24 15:08:07,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 15:08:07,655 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:08:07,655 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:08:07,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:08:07,656 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:08:07,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:08:07,657 INFO L82 PathProgramCache]: Analyzing trace with hash -594029260, now seen corresponding path program 1 times [2020-09-24 15:08:07,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:08:07,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950625563] [2020-09-24 15:08:07,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:08:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:07,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:08:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:07,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-24 15:08:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:08:07,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950625563] [2020-09-24 15:08:07,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:08:07,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 15:08:07,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53691269] [2020-09-24 15:08:07,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 15:08:07,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:08:07,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 15:08:07,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:08:07,814 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 8 states. [2020-09-24 15:08:08,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:08:08,004 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-24 15:08:08,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 15:08:08,005 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-09-24 15:08:08,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:08:08,009 INFO L225 Difference]: With dead ends: 59 [2020-09-24 15:08:08,009 INFO L226 Difference]: Without dead ends: 57 [2020-09-24 15:08:08,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-24 15:08:08,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-24 15:08:08,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-09-24 15:08:08,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-24 15:08:08,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2020-09-24 15:08:08,029 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 42 [2020-09-24 15:08:08,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:08:08,030 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2020-09-24 15:08:08,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 15:08:08,031 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2020-09-24 15:08:08,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 15:08:08,034 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:08:08,035 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:08:08,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:08:08,035 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:08:08,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:08:08,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1318797830, now seen corresponding path program 1 times [2020-09-24 15:08:08,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:08:08,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692830474] [2020-09-24 15:08:08,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:08:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:08,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:08:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:08,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-24 15:08:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:08,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-24 15:08:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:08,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 15:08:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:08,308 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 15:08:08,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692830474] [2020-09-24 15:08:08,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:08:08,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 15:08:08,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163100249] [2020-09-24 15:08:08,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 15:08:08,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:08:08,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 15:08:08,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-24 15:08:08,312 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 12 states. [2020-09-24 15:08:08,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:08:08,599 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2020-09-24 15:08:08,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 15:08:08,600 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-09-24 15:08:08,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:08:08,601 INFO L225 Difference]: With dead ends: 57 [2020-09-24 15:08:08,602 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 15:08:08,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2020-09-24 15:08:08,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 15:08:08,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 15:08:08,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 15:08:08,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 15:08:08,605 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2020-09-24 15:08:08,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:08:08,605 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 15:08:08,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 15:08:08,606 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 15:08:08,606 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 15:08:08,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:08:08,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 15:08:08,688 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 15:08:08,689 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 15:08:08,689 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 15:08:08,689 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 15:08:08,689 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 15:08:08,690 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 15:08:08,690 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-24 15:08:08,690 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-24 15:08:08,690 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-24 15:08:08,690 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-24 15:08:08,690 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-24 15:08:08,691 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-24 15:08:08,691 INFO L268 CegarLoopResult]: For program point L27-1(lines 14 45) no Hoare annotation was computed. [2020-09-24 15:08:08,691 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 45) no Hoare annotation was computed. [2020-09-24 15:08:08,691 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-24 15:08:08,691 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-24 15:08:08,692 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-24 15:08:08,692 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 15:08:08,692 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-24 15:08:08,692 INFO L268 CegarLoopResult]: For program point L36(lines 36 37) no Hoare annotation was computed. [2020-09-24 15:08:08,692 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-24 15:08:08,692 INFO L268 CegarLoopResult]: For program point L28(lines 14 45) no Hoare annotation was computed. [2020-09-24 15:08:08,693 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 15:08:08,693 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-24 15:08:08,693 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 15:08:08,693 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 15:08:08,693 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-24 15:08:08,693 INFO L268 CegarLoopResult]: For program point L29(lines 14 45) no Hoare annotation was computed. [2020-09-24 15:08:08,694 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 15:08:08,694 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-24 15:08:08,694 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 15:08:08,694 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-24 15:08:08,694 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-24 15:08:08,695 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 15:08:08,695 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-24 15:08:08,695 INFO L268 CegarLoopResult]: For program point L38-3(lines 38 42) no Hoare annotation was computed. [2020-09-24 15:08:08,695 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-24 15:08:08,695 INFO L268 CegarLoopResult]: For program point L38-4(line 38) no Hoare annotation was computed. [2020-09-24 15:08:08,695 INFO L268 CegarLoopResult]: For program point L38-5(line 38) no Hoare annotation was computed. [2020-09-24 15:08:08,696 INFO L264 CegarLoopResult]: At program point L38-6(lines 38 42) the Hoare annotation is: (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) (+ main_~bufsize_0~0 (* 2 main_~i~0)))) [2020-09-24 15:08:08,696 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 45) the Hoare annotation is: true [2020-09-24 15:08:08,696 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-24 15:08:08,696 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-09-24 15:08:08,696 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 15:08:08,697 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-24 15:08:08,697 INFO L268 CegarLoopResult]: For program point L22-2(line 22) no Hoare annotation was computed. [2020-09-24 15:08:08,697 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 15:08:08,697 INFO L271 CegarLoopResult]: At program point L43(lines 13 45) the Hoare annotation is: true [2020-09-24 15:08:08,698 INFO L264 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= (+ main_~p~0 2) main_~bufsize_0~0)) [2020-09-24 15:08:08,698 INFO L264 CegarLoopResult]: At program point L39-1(line 39) the Hoare annotation is: (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= (+ main_~p~0 2) main_~bufsize_0~0)) [2020-09-24 15:08:08,698 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-24 15:08:08,698 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-24 15:08:08,698 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-24 15:08:08,699 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 15:08:08,699 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-24 15:08:08,699 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-24 15:08:08,699 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-24 15:08:08,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:08:08 BoogieIcfgContainer [2020-09-24 15:08:08,725 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:08:08,729 INFO L168 Benchmark]: Toolchain (without parser) took 2833.43 ms. Allocated memory was 137.9 MB in the beginning and 230.7 MB in the end (delta: 92.8 MB). Free memory was 101.2 MB in the beginning and 137.0 MB in the end (delta: -35.8 MB). Peak memory consumption was 57.0 MB. Max. memory is 7.1 GB. [2020-09-24 15:08:08,730 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 15:08:08,732 INFO L168 Benchmark]: CACSL2BoogieTranslator took 401.84 ms. Allocated memory is still 137.9 MB. Free memory was 100.5 MB in the beginning and 90.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-24 15:08:08,733 INFO L168 Benchmark]: Boogie Preprocessor took 119.60 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 90.5 MB in the beginning and 179.8 MB in the end (delta: -89.3 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-24 15:08:08,734 INFO L168 Benchmark]: RCFGBuilder took 438.78 ms. Allocated memory is still 200.8 MB. Free memory was 179.8 MB in the beginning and 163.5 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2020-09-24 15:08:08,735 INFO L168 Benchmark]: TraceAbstraction took 1863.31 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 162.9 MB in the beginning and 137.0 MB in the end (delta: 25.9 MB). Peak memory consumption was 55.8 MB. Max. memory is 7.1 GB. [2020-09-24 15:08:08,740 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 401.84 ms. Allocated memory is still 137.9 MB. Free memory was 100.5 MB in the beginning and 90.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.60 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 90.5 MB in the beginning and 179.8 MB in the end (delta: -89.3 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 438.78 ms. Allocated memory is still 200.8 MB. Free memory was 179.8 MB in the beginning and 163.5 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1863.31 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 162.9 MB in the beginning and 137.0 MB in the end (delta: 25.9 MB). Peak memory consumption was 55.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 1 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (1 <= p && 1 <= leader_len) && 2 * ielen + p <= bufsize_0 + 2 * i - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 136 SDtfs, 57 SDslu, 695 SDs, 0 SdLazy, 279 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=2, 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 14 PreInvPairs, 23 NumberOfFragments, 70 HoareAnnotationTreeSize, 14 FomulaSimplifications, 113 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 133 ConstructedInterpolants, 0 QuantifiedInterpolants, 15406 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 21/23 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...