/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Addition01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 17:57:21,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 17:57:21,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 17:57:21,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 17:57:21,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 17:57:21,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 17:57:21,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 17:57:21,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 17:57:21,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 17:57:21,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 17:57:21,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 17:57:21,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 17:57:21,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 17:57:21,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 17:57:21,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 17:57:21,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 17:57:21,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 17:57:21,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 17:57:21,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 17:57:21,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 17:57:21,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 17:57:21,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 17:57:21,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 17:57:21,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 17:57:21,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 17:57:21,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 17:57:21,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 17:57:21,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 17:57:21,934 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-23 17:57:21,961 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 17:57:21,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 17:57:21,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 17:57:21,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 17:57:21,964 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 17:57:21,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 17:57:21,965 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 17:57:21,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 17:57:21,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 17:57:21,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 17:57:21,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 17:57:21,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 17:57:21,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 17:57:21,966 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 17:57:21,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 17:57:21,967 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 17:57:21,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 17:57:21,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 17:57:21,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 17:57:21,968 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 17:57:21,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 17:57:21,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:57:21,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 17:57:21,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 17:57:21,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 17:57:21,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 17:57:21,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 17:57:21,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 17:57:21,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 17:57:21,970 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 17:57:22,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 17:57:22,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 17:57:22,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 17:57:22,379 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 17:57:22,380 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 17:57:22,381 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition01-2.c [2020-10-23 17:57:22,478 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ccf60d9c/5959825b761c47eebe1b3fc72fe26501/FLAGfa80bc9f7 [2020-10-23 17:57:23,095 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 17:57:23,096 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition01-2.c [2020-10-23 17:57:23,104 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ccf60d9c/5959825b761c47eebe1b3fc72fe26501/FLAGfa80bc9f7 [2020-10-23 17:57:23,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ccf60d9c/5959825b761c47eebe1b3fc72fe26501 [2020-10-23 17:57:23,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 17:57:23,451 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 17:57:23,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 17:57:23,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 17:57:23,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 17:57:23,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:57:23" (1/1) ... [2020-10-23 17:57:23,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aa5d8f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:23, skipping insertion in model container [2020-10-23 17:57:23,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:57:23" (1/1) ... [2020-10-23 17:57:23,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 17:57:23,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 17:57:23,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:57:23,661 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 17:57:23,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:57:23,699 INFO L208 MainTranslator]: Completed translation [2020-10-23 17:57:23,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:23 WrapperNode [2020-10-23 17:57:23,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 17:57:23,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 17:57:23,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 17:57:23,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 17:57:23,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:23" (1/1) ... [2020-10-23 17:57:23,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:23" (1/1) ... [2020-10-23 17:57:23,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:23" (1/1) ... [2020-10-23 17:57:23,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:23" (1/1) ... [2020-10-23 17:57:23,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:23" (1/1) ... [2020-10-23 17:57:23,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:23" (1/1) ... [2020-10-23 17:57:23,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:23" (1/1) ... [2020-10-23 17:57:23,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 17:57:23,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 17:57:23,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 17:57:23,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 17:57:23,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-10-23 17:57:23,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 17:57:23,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 17:57:23,828 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 17:57:23,828 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-10-23 17:57:23,828 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 17:57:23,828 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 17:57:23,828 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 17:57:23,829 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 17:57:23,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 17:57:23,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 17:57:23,829 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-10-23 17:57:23,829 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 17:57:23,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 17:57:23,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 17:57:23,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 17:57:23,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 17:57:23,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 17:57:23,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 17:57:24,239 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 17:57:24,239 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 17:57:24,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:57:24 BoogieIcfgContainer [2020-10-23 17:57:24,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 17:57:24,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 17:57:24,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 17:57:24,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 17:57:24,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:57:23" (1/3) ... [2020-10-23 17:57:24,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3295b1f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:57:24, skipping insertion in model container [2020-10-23 17:57:24,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:23" (2/3) ... [2020-10-23 17:57:24,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3295b1f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:57:24, skipping insertion in model container [2020-10-23 17:57:24,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:57:24" (3/3) ... [2020-10-23 17:57:24,252 INFO L111 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2020-10-23 17:57:24,266 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 17:57:24,271 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 17:57:24,286 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 17:57:24,316 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 17:57:24,317 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 17:57:24,317 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 17:57:24,317 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 17:57:24,317 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 17:57:24,318 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 17:57:24,318 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 17:57:24,318 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 17:57:24,338 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-23 17:57:24,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-23 17:57:24,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:57:24,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:57:24,347 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:57:24,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:57:24,358 INFO L82 PathProgramCache]: Analyzing trace with hash 2040802546, now seen corresponding path program 1 times [2020-10-23 17:57:24,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:57:24,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175366056] [2020-10-23 17:57:24,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:57:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:24,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:57:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:24,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-23 17:57:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:24,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:57:24,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175366056] [2020-10-23 17:57:24,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:57:24,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 17:57:24,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143582809] [2020-10-23 17:57:24,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 17:57:24,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:57:24,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 17:57:24,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-23 17:57:24,886 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 7 states. [2020-10-23 17:57:25,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:57:25,356 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-10-23 17:57:25,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 17:57:25,358 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-10-23 17:57:25,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:57:25,368 INFO L225 Difference]: With dead ends: 44 [2020-10-23 17:57:25,369 INFO L226 Difference]: Without dead ends: 26 [2020-10-23 17:57:25,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-23 17:57:25,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-23 17:57:25,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-23 17:57:25,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-23 17:57:25,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2020-10-23 17:57:25,423 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 17 [2020-10-23 17:57:25,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:57:25,423 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2020-10-23 17:57:25,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 17:57:25,424 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2020-10-23 17:57:25,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-23 17:57:25,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:57:25,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:57:25,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 17:57:25,427 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:57:25,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:57:25,428 INFO L82 PathProgramCache]: Analyzing trace with hash -165285543, now seen corresponding path program 1 times [2020-10-23 17:57:25,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:57:25,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089592642] [2020-10-23 17:57:25,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:57:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:25,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:57:25,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:25,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-23 17:57:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:25,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:57:25,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089592642] [2020-10-23 17:57:25,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:57:25,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 17:57:25,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094582992] [2020-10-23 17:57:25,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 17:57:25,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:57:25,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 17:57:25,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-23 17:57:25,616 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 7 states. [2020-10-23 17:57:25,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:57:25,906 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2020-10-23 17:57:25,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 17:57:25,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-23 17:57:25,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:57:25,908 INFO L225 Difference]: With dead ends: 38 [2020-10-23 17:57:25,908 INFO L226 Difference]: Without dead ends: 23 [2020-10-23 17:57:25,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-23 17:57:25,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-23 17:57:25,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-23 17:57:25,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-23 17:57:25,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-10-23 17:57:25,918 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 19 [2020-10-23 17:57:25,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:57:25,918 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-10-23 17:57:25,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 17:57:25,919 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-10-23 17:57:25,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 17:57:25,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:57:25,920 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:57:25,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 17:57:25,921 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:57:25,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:57:25,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1241281567, now seen corresponding path program 1 times [2020-10-23 17:57:25,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:57:25,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181432432] [2020-10-23 17:57:25,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:57:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:26,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:57:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:26,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-23 17:57:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:26,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:57:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:26,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-23 17:57:26,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181432432] [2020-10-23 17:57:26,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438413318] [2020-10-23 17:57:26,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:57:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:26,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-23 17:57:26,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:57:26,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-23 17:57:26,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 17:57:26,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2020-10-23 17:57:26,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355745993] [2020-10-23 17:57:26,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-23 17:57:26,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:57:26,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-23 17:57:26,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-10-23 17:57:26,590 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 16 states. [2020-10-23 17:57:27,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:57:27,354 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2020-10-23 17:57:27,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 17:57:27,354 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 24 [2020-10-23 17:57:27,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:57:27,355 INFO L225 Difference]: With dead ends: 28 [2020-10-23 17:57:27,355 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 17:57:27,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2020-10-23 17:57:27,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 17:57:27,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 17:57:27,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 17:57:27,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 17:57:27,357 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-10-23 17:57:27,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:57:27,358 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 17:57:27,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-23 17:57:27,358 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 17:57:27,358 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 17:57:27,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-23 17:57:27,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 17:57:27,751 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-23 17:57:27,751 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 17:57:27,751 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-23 17:57:27,752 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-23 17:57:27,752 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 17:57:27,752 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-23 17:57:27,752 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 17:57:27,752 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 17:57:27,753 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 17:57:27,753 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 17:57:27,753 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 17:57:27,753 INFO L274 CegarLoopResult]: For program point L30(lines 30 34) no Hoare annotation was computed. [2020-10-23 17:57:27,753 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 28 47) the Hoare annotation is: true [2020-10-23 17:57:27,753 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 28 47) no Hoare annotation was computed. [2020-10-23 17:57:27,753 INFO L270 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: false [2020-10-23 17:57:27,753 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 28 47) no Hoare annotation was computed. [2020-10-23 17:57:27,754 INFO L274 CegarLoopResult]: For program point L45-1(line 45) no Hoare annotation was computed. [2020-10-23 17:57:27,754 INFO L274 CegarLoopResult]: For program point L42(lines 42 46) no Hoare annotation was computed. [2020-10-23 17:57:27,754 INFO L270 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (or (= main_~n~0 0) (< 0 main_~n~0)) [2020-10-23 17:57:27,754 INFO L274 CegarLoopResult]: For program point L41-1(line 41) no Hoare annotation was computed. [2020-10-23 17:57:27,754 INFO L274 CegarLoopResult]: For program point L36(lines 36 40) no Hoare annotation was computed. [2020-10-23 17:57:27,754 INFO L270 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (= |addition_#in~m| addition_~m) (= |addition_#in~n| addition_~n) (<= |addition_#in~n| 0) (not (= |addition_#in~n| 0))) [2020-10-23 17:57:27,755 INFO L274 CegarLoopResult]: For program point L22(lines 22 24) no Hoare annotation was computed. [2020-10-23 17:57:27,755 INFO L274 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-10-23 17:57:27,755 INFO L274 CegarLoopResult]: For program point additionFINAL(lines 15 25) no Hoare annotation was computed. [2020-10-23 17:57:27,755 INFO L270 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (= |addition_#in~m| addition_~m) (= |addition_#in~n| addition_~n) (<= 1 addition_~n)) [2020-10-23 17:57:27,755 INFO L274 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-10-23 17:57:27,755 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-10-23 17:57:27,755 INFO L274 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-10-23 17:57:27,756 INFO L277 CegarLoopResult]: At program point additionENTRY(lines 15 25) the Hoare annotation is: true [2020-10-23 17:57:27,756 INFO L274 CegarLoopResult]: For program point additionEXIT(lines 15 25) no Hoare annotation was computed. [2020-10-23 17:57:27,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:57:27 BoogieIcfgContainer [2020-10-23 17:57:27,761 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 17:57:27,764 INFO L168 Benchmark]: Toolchain (without parser) took 4316.86 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 128.9 MB in the beginning and 122.5 MB in the end (delta: 6.4 MB). Peak memory consumption was 38.9 MB. Max. memory is 8.0 GB. [2020-10-23 17:57:27,765 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 125.8 MB. Free memory was 99.9 MB in the beginning and 99.8 MB in the end (delta: 62.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 17:57:27,766 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.43 ms. Allocated memory is still 153.1 MB. Free memory was 128.4 MB in the beginning and 118.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 17:57:27,767 INFO L168 Benchmark]: Boogie Preprocessor took 36.09 ms. Allocated memory is still 153.1 MB. Free memory was 118.6 MB in the beginning and 117.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 17:57:27,768 INFO L168 Benchmark]: RCFGBuilder took 503.87 ms. Allocated memory is still 153.1 MB. Free memory was 117.2 MB in the beginning and 135.9 MB in the end (delta: -18.7 MB). Peak memory consumption was 16.2 MB. Max. memory is 8.0 GB. [2020-10-23 17:57:27,769 INFO L168 Benchmark]: TraceAbstraction took 3518.29 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 135.5 MB in the beginning and 122.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 44.7 MB. Max. memory is 8.0 GB. [2020-10-23 17:57:27,772 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 125.8 MB. Free memory was 99.9 MB in the beginning and 99.8 MB in the end (delta: 62.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 247.43 ms. Allocated memory is still 153.1 MB. Free memory was 128.4 MB in the beginning and 118.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.09 ms. Allocated memory is still 153.1 MB. Free memory was 118.6 MB in the beginning and 117.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 503.87 ms. Allocated memory is still 153.1 MB. Free memory was 117.2 MB in the beginning and 135.9 MB in the end (delta: -18.7 MB). Peak memory consumption was 16.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3518.29 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 135.5 MB in the beginning and 122.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 44.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 92 SDslu, 91 SDs, 0 SdLazy, 313 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 18 PreInvPairs, 18 NumberOfFragments, 68 HoareAnnotationTreeSize, 18 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 155 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 8845 SizeOfPredicates, 7 NumberOfNonLiveVariables, 130 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 3/8 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...