/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.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 23:19:44,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:19:44,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:19:44,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:19:44,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:19:44,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:19:44,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:19:44,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:19:44,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:19:44,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:19:44,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:19:44,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:19:44,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:19:44,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:19:44,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:19:44,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:19:44,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:19:44,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:19:44,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:19:44,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:19:44,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:19:44,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:19:44,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:19:44,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:19:44,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 23:19:44,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:19:44,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:19:44,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:19:44,735 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 [2020-07-19 23:19:44,749 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:19:44,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:19:44,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:19:44,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:19:44,751 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:19:44,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:19:44,751 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:19:44,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:19:44,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:19:44,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:19:44,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:19:44,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:19:44,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:19:44,752 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:19:44,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:19:44,753 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:19:44,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:19:44,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:19:44,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:19:44,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:19:44,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:19:44,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:19:44,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:19:44,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:19:44,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:19:44,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:19:44,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:19:44,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:19:44,755 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:19:44,756 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-19 23:19:45,015 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:19:45,029 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:19:45,033 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:19:45,034 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:19:45,035 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:19:45,035 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test05.c [2020-07-19 23:19:45,112 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6127e6a6/649692d053c941b5b11d87d77a9aa2c9/FLAG6c0bc547a [2020-07-19 23:19:45,577 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:19:45,578 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test05.c [2020-07-19 23:19:45,586 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6127e6a6/649692d053c941b5b11d87d77a9aa2c9/FLAG6c0bc547a [2020-07-19 23:19:45,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6127e6a6/649692d053c941b5b11d87d77a9aa2c9 [2020-07-19 23:19:45,951 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:19:45,953 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:19:45,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:19:45,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:19:45,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:19:45,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:19:45" (1/1) ... [2020-07-19 23:19:45,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@423f00c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:45, skipping insertion in model container [2020-07-19 23:19:45,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:19:45" (1/1) ... [2020-07-19 23:19:45,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:19:45,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:19:46,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:19:46,247 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:19:46,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:19:46,282 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:19:46,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:46 WrapperNode [2020-07-19 23:19:46,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:19:46,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:19:46,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:19:46,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:19:46,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:46" (1/1) ... [2020-07-19 23:19:46,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:46" (1/1) ... [2020-07-19 23:19:46,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:46" (1/1) ... [2020-07-19 23:19:46,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:46" (1/1) ... [2020-07-19 23:19:46,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:46" (1/1) ... [2020-07-19 23:19:46,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:46" (1/1) ... [2020-07-19 23:19:46,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:46" (1/1) ... [2020-07-19 23:19:46,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:19:46,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:19:46,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:19:46,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:19:46,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:46" (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 [2020-07-19 23:19:46,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:19:46,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:19:46,494 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2020-07-19 23:19:46,494 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-07-19 23:19:46,494 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:19:46,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:19:46,494 INFO L130 BoogieDeclarations]: Found specification of procedure g [2020-07-19 23:19:46,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-19 23:19:46,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-19 23:19:46,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 23:19:46,495 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-07-19 23:19:46,495 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:19:46,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 23:19:46,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 23:19:46,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 23:19:46,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:19:46,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:19:46,851 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:19:46,851 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-19 23:19:46,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:19:46 BoogieIcfgContainer [2020-07-19 23:19:46,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:19:46,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:19:46,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:19:46,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:19:46,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:19:45" (1/3) ... [2020-07-19 23:19:46,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68078f23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:19:46, skipping insertion in model container [2020-07-19 23:19:46,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:46" (2/3) ... [2020-07-19 23:19:46,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68078f23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:19:46, skipping insertion in model container [2020-07-19 23:19:46,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:19:46" (3/3) ... [2020-07-19 23:19:46,870 INFO L109 eAbstractionObserver]: Analyzing ICFG test05.c [2020-07-19 23:19:46,880 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:19:46,888 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 23:19:46,898 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 23:19:46,920 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:19:46,920 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:19:46,920 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:19:46,921 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:19:46,921 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:19:46,921 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:19:46,921 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:19:46,921 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:19:46,938 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-07-19 23:19:46,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-19 23:19:46,945 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:46,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:19:46,953 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:46,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:46,959 INFO L82 PathProgramCache]: Analyzing trace with hash -685779266, now seen corresponding path program 1 times [2020-07-19 23:19:46,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:46,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831608116] [2020-07-19 23:19:46,967 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@19df5ce3 [2020-07-19 23:19:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:47,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:47,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831608116] [2020-07-19 23:19:47,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:19:47,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-19 23:19:47,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755525618] [2020-07-19 23:19:47,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-19 23:19:47,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:47,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-19 23:19:47,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-19 23:19:47,313 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 7 states. [2020-07-19 23:19:47,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:47,569 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-07-19 23:19:47,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-19 23:19:47,571 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-07-19 23:19:47,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:47,582 INFO L225 Difference]: With dead ends: 36 [2020-07-19 23:19:47,582 INFO L226 Difference]: Without dead ends: 21 [2020-07-19 23:19:47,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-07-19 23:19:47,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-19 23:19:47,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-19 23:19:47,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-19 23:19:47,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-07-19 23:19:47,628 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 14 [2020-07-19 23:19:47,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:47,629 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-07-19 23:19:47,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-19 23:19:47,629 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-07-19 23:19:47,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-19 23:19:47,630 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:47,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:19:47,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 23:19:47,631 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:47,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:47,632 INFO L82 PathProgramCache]: Analyzing trace with hash 636648720, now seen corresponding path program 1 times [2020-07-19 23:19:47,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:47,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028907715] [2020-07-19 23:19:47,632 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@19df5ce3 [2020-07-19 23:19:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:47,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:47,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028907715] [2020-07-19 23:19:47,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:19:47,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-19 23:19:47,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50695199] [2020-07-19 23:19:47,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-19 23:19:47,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:47,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-19 23:19:47,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-19 23:19:47,883 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 7 states. [2020-07-19 23:19:48,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:48,057 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2020-07-19 23:19:48,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-19 23:19:48,057 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-07-19 23:19:48,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:48,058 INFO L225 Difference]: With dead ends: 23 [2020-07-19 23:19:48,059 INFO L226 Difference]: Without dead ends: 21 [2020-07-19 23:19:48,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-07-19 23:19:48,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-19 23:19:48,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-19 23:19:48,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-19 23:19:48,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2020-07-19 23:19:48,066 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 19 [2020-07-19 23:19:48,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:48,067 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2020-07-19 23:19:48,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-19 23:19:48,067 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2020-07-19 23:19:48,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-19 23:19:48,068 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:48,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:19:48,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 23:19:48,069 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:48,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:48,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1738724303, now seen corresponding path program 1 times [2020-07-19 23:19:48,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:48,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851251171] [2020-07-19 23:19:48,070 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@19df5ce3 [2020-07-19 23:19:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:48,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:48,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851251171] [2020-07-19 23:19:48,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:19:48,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-19 23:19:48,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858167791] [2020-07-19 23:19:48,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-19 23:19:48,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:48,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-19 23:19:48,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-07-19 23:19:48,533 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand 11 states. [2020-07-19 23:19:48,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:48,881 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2020-07-19 23:19:48,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-19 23:19:48,881 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2020-07-19 23:19:48,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:48,882 INFO L225 Difference]: With dead ends: 21 [2020-07-19 23:19:48,882 INFO L226 Difference]: Without dead ends: 0 [2020-07-19 23:19:48,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-07-19 23:19:48,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-19 23:19:48,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-19 23:19:48,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-19 23:19:48,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-19 23:19:48,884 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-07-19 23:19:48,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:48,884 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-19 23:19:48,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-19 23:19:48,885 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-19 23:19:48,885 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-19 23:19:48,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 23:19:48,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-19 23:19:49,058 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-19 23:19:49,059 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-07-19 23:19:49,059 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-19 23:19:49,060 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (= |f_#in~a| f_~a) (= |f_#in~p1.base| f_~p1.base) (= f_~p1.offset |f_#in~p1.offset|) (= |f_#in~p2.base| f_~p2.base) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= f_~p2.offset |f_#in~p2.offset|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-19 23:19:49,060 INFO L268 CegarLoopResult]: For program point L12(lines 12 17) no Hoare annotation was computed. [2020-07-19 23:19:49,060 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-07-19 23:19:49,061 INFO L268 CegarLoopResult]: For program point fEXIT(lines 11 18) no Hoare annotation was computed. [2020-07-19 23:19:49,061 INFO L264 CegarLoopResult]: At program point fENTRY(lines 11 18) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-19 23:19:49,061 INFO L268 CegarLoopResult]: For program point fFINAL(lines 11 18) no Hoare annotation was computed. [2020-07-19 23:19:49,061 INFO L268 CegarLoopResult]: For program point gEXIT(lines 4 9) no Hoare annotation was computed. [2020-07-19 23:19:49,062 INFO L268 CegarLoopResult]: For program point gFINAL(lines 4 9) no Hoare annotation was computed. [2020-07-19 23:19:49,062 INFO L264 CegarLoopResult]: At program point gENTRY(lines 4 9) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-19 23:19:49,062 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-19 23:19:49,062 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-19 23:19:49,063 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-19 23:19:49,063 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-19 23:19:49,063 INFO L264 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |main_~#p2~0.base|) |main_~#p2~0.offset|))) (and (not (= .cse0 |main_~#a~0.base|)) (not (= |main_~#p1~0.base| |main_~#p2~0.base|)) (not (= |main_~#p2~0.base| |main_~#a~0.base|)) (not (= .cse0 |main_~#p1~0.base|)) (= 4 |main_#t~mem4|) (not (= |main_~#p1~0.base| |main_~#a~0.base|)))) [2020-07-19 23:19:49,064 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2020-07-19 23:19:49,064 INFO L268 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2020-07-19 23:19:49,064 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 20 46) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-19 23:19:49,064 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 46) no Hoare annotation was computed. [2020-07-19 23:19:49,065 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 46) no Hoare annotation was computed. [2020-07-19 23:19:49,065 INFO L264 CegarLoopResult]: At program point L39(lines 20 46) the Hoare annotation is: false [2020-07-19 23:19:49,065 INFO L268 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2020-07-19 23:19:49,065 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-07-19 23:19:49,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 11:19:49 BoogieIcfgContainer [2020-07-19 23:19:49,080 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 23:19:49,084 INFO L168 Benchmark]: Toolchain (without parser) took 3130.13 ms. Allocated memory was 137.9 MB in the beginning and 234.4 MB in the end (delta: 96.5 MB). Free memory was 102.7 MB in the beginning and 95.2 MB in the end (delta: 7.5 MB). Peak memory consumption was 103.9 MB. Max. memory is 7.1 GB. [2020-07-19 23:19:49,085 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-19 23:19:49,086 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.35 ms. Allocated memory is still 137.9 MB. Free memory was 102.3 MB in the beginning and 92.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-19 23:19:49,087 INFO L168 Benchmark]: Boogie Preprocessor took 135.29 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 92.3 MB in the beginning and 180.0 MB in the end (delta: -87.7 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-07-19 23:19:49,088 INFO L168 Benchmark]: RCFGBuilder took 439.17 ms. Allocated memory is still 201.9 MB. Free memory was 180.0 MB in the beginning and 159.8 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-07-19 23:19:49,089 INFO L168 Benchmark]: TraceAbstraction took 2220.46 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 159.8 MB in the beginning and 95.2 MB in the end (delta: 64.6 MB). Peak memory consumption was 97.1 MB. Max. memory is 7.1 GB. [2020-07-19 23:19:49,094 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 329.35 ms. Allocated memory is still 137.9 MB. Free memory was 102.3 MB in the beginning and 92.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.29 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 92.3 MB in the beginning and 180.0 MB in the end (delta: -87.7 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 439.17 ms. Allocated memory is still 201.9 MB. Free memory was 180.0 MB in the beginning and 159.8 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2220.46 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 159.8 MB in the beginning and 95.2 MB in the end (delta: 64.6 MB). Peak memory consumption was 97.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: 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: 20]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 34 SDslu, 88 SDs, 0 SdLazy, 237 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 9 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 103 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 42 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 7654 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...