/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/veris.c_sendmail_tTflag_arr_one_loop.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:27:45,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:27:45,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:27:45,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-19 00:27:45,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:27:45,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:27:45,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:27:45,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:27:45,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:27:45,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:27:45,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:27:45,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:27:45,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:27:45,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:27:45,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:27:45,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:27:45,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 00:27:45,979 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 00:27:46,000 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:27:46,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:27:46,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:27:46,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:27:46,002 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:27:46,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:27:46,002 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:27:46,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:27:46,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:27:46,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:27:46,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:27:46,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:27:46,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:27:46,004 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:27:46,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:27:46,004 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:27:46,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:27:46,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:27:46,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:27:46,005 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:27:46,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:27:46,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:27:46,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:27:46,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:27:46,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:27:46,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:27:46,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:27:46,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:27:46,007 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:27:46,007 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=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:27:46,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:27:46,311 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:27:46,315 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:27:46,316 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:27:46,317 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:27:46,318 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2020-08-19 00:27:46,391 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffcb31d48/e01fd2e8931b4adda257c848afa7365c/FLAG2745500df [2020-08-19 00:27:46,849 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:27:46,850 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2020-08-19 00:27:46,857 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffcb31d48/e01fd2e8931b4adda257c848afa7365c/FLAG2745500df [2020-08-19 00:27:47,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffcb31d48/e01fd2e8931b4adda257c848afa7365c [2020-08-19 00:27:47,211 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:27:47,213 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:27:47,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:27:47,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:27:47,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:27:47,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:27:47" (1/1) ... [2020-08-19 00:27:47,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e342344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:47, skipping insertion in model container [2020-08-19 00:27:47,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:27:47" (1/1) ... [2020-08-19 00:27:47,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:27:47,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:27:47,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:27:47,428 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:27:47,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:27:47,473 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:27:47,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:47 WrapperNode [2020-08-19 00:27:47,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:27:47,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:27:47,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:27:47,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:27:47,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:47" (1/1) ... [2020-08-19 00:27:47,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:47" (1/1) ... [2020-08-19 00:27:47,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:47" (1/1) ... [2020-08-19 00:27:47,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:47" (1/1) ... [2020-08-19 00:27:47,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:47" (1/1) ... [2020-08-19 00:27:47,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:47" (1/1) ... [2020-08-19 00:27:47,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:47" (1/1) ... [2020-08-19 00:27:47,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:27:47,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:27:47,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:27:47,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:27:47,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:47" (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 00:27:47,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:27:47,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:27:47,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 00:27:47,690 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:27:47,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:27:47,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-19 00:27:47,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 00:27:47,691 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:27:47,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:27:47,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:27:47,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:27:47,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:27:47,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:27:47,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:27:48,012 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:27:48,013 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-19 00:27:48,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:27:48 BoogieIcfgContainer [2020-08-19 00:27:48,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:27:48,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:27:48,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:27:48,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:27:48,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:27:47" (1/3) ... [2020-08-19 00:27:48,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f729ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:27:48, skipping insertion in model container [2020-08-19 00:27:48,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:47" (2/3) ... [2020-08-19 00:27:48,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f729ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:27:48, skipping insertion in model container [2020-08-19 00:27:48,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:27:48" (3/3) ... [2020-08-19 00:27:48,041 INFO L109 eAbstractionObserver]: Analyzing ICFG veris.c_sendmail_tTflag_arr_one_loop.c [2020-08-19 00:27:48,053 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:27:48,060 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:27:48,074 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:27:48,098 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:27:48,098 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:27:48,098 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:27:48,099 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:27:48,099 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:27:48,099 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:27:48,099 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:27:48,099 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:27:48,117 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-08-19 00:27:48,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-19 00:27:48,123 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:27:48,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:27:48,125 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:27:48,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:27:48,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1522547275, now seen corresponding path program 1 times [2020-08-19 00:27:48,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:27:48,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251939179] [2020-08-19 00:27:48,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:27:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:27:48,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:27:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:27:48,315 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 00:27:48,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251939179] [2020-08-19 00:27:48,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:27:48,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:27:48,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761516728] [2020-08-19 00:27:48,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:27:48,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:27:48,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:27:48,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:27:48,343 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-08-19 00:27:48,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:27:48,412 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2020-08-19 00:27:48,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:27:48,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-08-19 00:27:48,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:27:48,422 INFO L225 Difference]: With dead ends: 36 [2020-08-19 00:27:48,422 INFO L226 Difference]: Without dead ends: 15 [2020-08-19 00:27:48,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:27:48,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-08-19 00:27:48,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-08-19 00:27:48,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-08-19 00:27:48,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-08-19 00:27:48,463 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2020-08-19 00:27:48,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:27:48,463 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-08-19 00:27:48,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:27:48,464 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-08-19 00:27:48,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-19 00:27:48,464 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:27:48,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:27:48,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:27:48,465 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:27:48,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:27:48,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1742365231, now seen corresponding path program 1 times [2020-08-19 00:27:48,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:27:48,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672735492] [2020-08-19 00:27:48,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:27:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:27:48,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:27:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:27:48,596 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 00:27:48,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672735492] [2020-08-19 00:27:48,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:27:48,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:27:48,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581435216] [2020-08-19 00:27:48,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:27:48,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:27:48,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:27:48,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:27:48,600 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 4 states. [2020-08-19 00:27:48,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:27:48,665 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2020-08-19 00:27:48,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 00:27:48,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-08-19 00:27:48,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:27:48,669 INFO L225 Difference]: With dead ends: 26 [2020-08-19 00:27:48,670 INFO L226 Difference]: Without dead ends: 19 [2020-08-19 00:27:48,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:27:48,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-08-19 00:27:48,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2020-08-19 00:27:48,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-08-19 00:27:48,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-08-19 00:27:48,684 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2020-08-19 00:27:48,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:27:48,685 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-08-19 00:27:48,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:27:48,685 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-08-19 00:27:48,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 00:27:48,687 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:27:48,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:27:48,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:27:48,688 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:27:48,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:27:48,690 INFO L82 PathProgramCache]: Analyzing trace with hash 351378381, now seen corresponding path program 1 times [2020-08-19 00:27:48,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:27:48,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243543639] [2020-08-19 00:27:48,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:27:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:27:48,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:27:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:27:48,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:27:48,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243543639] [2020-08-19 00:27:48,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:27:48,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-19 00:27:48,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936274557] [2020-08-19 00:27:48,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:27:48,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:27:48,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:27:48,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:27:48,830 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 5 states. [2020-08-19 00:27:48,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:27:48,890 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-08-19 00:27:48,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:27:48,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-08-19 00:27:48,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:27:48,892 INFO L225 Difference]: With dead ends: 28 [2020-08-19 00:27:48,892 INFO L226 Difference]: Without dead ends: 21 [2020-08-19 00:27:48,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:27:48,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-19 00:27:48,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2020-08-19 00:27:48,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-08-19 00:27:48,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-08-19 00:27:48,899 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2020-08-19 00:27:48,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:27:48,899 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-08-19 00:27:48,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:27:48,899 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-08-19 00:27:48,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 00:27:48,900 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:27:48,900 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:27:48,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:27:48,901 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:27:48,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:27:48,901 INFO L82 PathProgramCache]: Analyzing trace with hash -652155413, now seen corresponding path program 2 times [2020-08-19 00:27:48,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:27:48,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548740312] [2020-08-19 00:27:48,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:27:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:27:48,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:27:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:27:48,991 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 00:27:48,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548740312] [2020-08-19 00:27:48,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:27:48,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 00:27:48,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416100828] [2020-08-19 00:27:48,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:27:48,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:27:48,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:27:48,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:27:48,994 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 5 states. [2020-08-19 00:27:49,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:27:49,055 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-08-19 00:27:49,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:27:49,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-08-19 00:27:49,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:27:49,056 INFO L225 Difference]: With dead ends: 18 [2020-08-19 00:27:49,056 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 00:27:49,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:27:49,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 00:27:49,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 00:27:49,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 00:27:49,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 00:27:49,058 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-08-19 00:27:49,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:27:49,059 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 00:27:49,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:27:49,059 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 00:27:49,059 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 00:27:49,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:27:49,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 00:27:49,106 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-19 00:27:49,107 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-08-19 00:27:49,107 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 00:27:49,107 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 00:27:49,107 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 00:27:49,107 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 00:27:49,108 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 00:27:49,108 INFO L271 CegarLoopResult]: At program point L27-2(lines 27 33) the Hoare annotation is: true [2020-08-19 00:27:49,108 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 37) no Hoare annotation was computed. [2020-08-19 00:27:49,108 INFO L271 CegarLoopResult]: At program point L27-3(lines 27 33) the Hoare annotation is: true [2020-08-19 00:27:49,108 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 37) no Hoare annotation was computed. [2020-08-19 00:27:49,109 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 10 37) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-08-19 00:27:49,109 INFO L268 CegarLoopResult]: For program point L18-2(lines 18 20) no Hoare annotation was computed. [2020-08-19 00:27:49,109 INFO L271 CegarLoopResult]: At program point L18-3(lines 18 20) the Hoare annotation is: true [2020-08-19 00:27:49,109 INFO L268 CegarLoopResult]: For program point L18-4(lines 18 20) no Hoare annotation was computed. [2020-08-19 00:27:49,109 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-08-19 00:27:49,110 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-08-19 00:27:49,110 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2020-08-19 00:27:49,110 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-08-19 00:27:49,110 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-08-19 00:27:49,110 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-08-19 00:27:49,111 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2020-08-19 00:27:49,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:27:49 BoogieIcfgContainer [2020-08-19 00:27:49,122 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:27:49,135 INFO L168 Benchmark]: Toolchain (without parser) took 1911.41 ms. Allocated memory was 142.6 MB in the beginning and 203.9 MB in the end (delta: 61.3 MB). Free memory was 105.1 MB in the beginning and 95.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 71.0 MB. Max. memory is 7.1 GB. [2020-08-19 00:27:49,136 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 142.6 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 00:27:49,137 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.94 ms. Allocated memory is still 142.6 MB. Free memory was 104.7 MB in the beginning and 94.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-19 00:27:49,138 INFO L168 Benchmark]: Boogie Preprocessor took 131.39 ms. Allocated memory was 142.6 MB in the beginning and 203.9 MB in the end (delta: 61.3 MB). Free memory was 94.8 MB in the beginning and 182.0 MB in the end (delta: -87.2 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2020-08-19 00:27:49,139 INFO L168 Benchmark]: RCFGBuilder took 413.26 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 167.2 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2020-08-19 00:27:49,140 INFO L168 Benchmark]: TraceAbstraction took 1098.94 ms. Allocated memory is still 203.9 MB. Free memory was 166.5 MB in the beginning and 95.4 MB in the end (delta: 71.1 MB). Peak memory consumption was 71.1 MB. Max. memory is 7.1 GB. [2020-08-19 00:27:49,144 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 142.6 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 259.94 ms. Allocated memory is still 142.6 MB. Free memory was 104.7 MB in the beginning and 94.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.39 ms. Allocated memory was 142.6 MB in the beginning and 203.9 MB in the end (delta: 61.3 MB). Free memory was 94.8 MB in the beginning and 182.0 MB in the end (delta: -87.2 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 413.26 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 167.2 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1098.94 ms. Allocated memory is still 203.9 MB. Free memory was 166.5 MB in the beginning and 95.4 MB in the end (delta: 71.1 MB). Peak memory consumption was 71.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 27]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 18 SDslu, 49 SDs, 0 SdLazy, 78 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 11 PreInvPairs, 15 NumberOfFragments, 19 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1542 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 4/5 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...