/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/loopv1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 12:04:09,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 12:04:09,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 12:04:09,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 12:04:09,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 12:04:09,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 12:04:09,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 12:04:09,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 12:04:09,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 12:04:09,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 12:04:09,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 12:04:09,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 12:04:09,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 12:04:09,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 12:04:09,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 12:04:09,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 12:04:09,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 12:04:09,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 12:04:09,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 12:04:09,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 12:04:09,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 12:04:09,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 12:04:09,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 12:04:09,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 12:04:09,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 12:04:09,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 12:04:09,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 12:04:09,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 12:04:09,913 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 [2020-07-21 12:04:09,930 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 12:04:09,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 12:04:09,931 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 12:04:09,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 12:04:09,932 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 12:04:09,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 12:04:09,932 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 12:04:09,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 12:04:09,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 12:04:09,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 12:04:09,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 12:04:09,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 12:04:09,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 12:04:09,934 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 12:04:09,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 12:04:09,934 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 12:04:09,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 12:04:09,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 12:04:09,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 12:04:09,935 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 12:04:09,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 12:04:09,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:04:09,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 12:04:09,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 12:04:09,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 12:04:09,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 12:04:09,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:04:09,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 12:04:09,937 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 12:04:09,937 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-21 12:04:10,254 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 12:04:10,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 12:04:10,274 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 12:04:10,275 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 12:04:10,276 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 12:04:10,277 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/loopv1.c [2020-07-21 12:04:10,373 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27661ca6f/7c990d56aa614c0db7c08f1544a8ea0c/FLAG72192d53d [2020-07-21 12:04:10,926 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 12:04:10,926 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv1.c [2020-07-21 12:04:10,934 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27661ca6f/7c990d56aa614c0db7c08f1544a8ea0c/FLAG72192d53d [2020-07-21 12:04:11,253 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27661ca6f/7c990d56aa614c0db7c08f1544a8ea0c [2020-07-21 12:04:11,267 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 12:04:11,272 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 12:04:11,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 12:04:11,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 12:04:11,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 12:04:11,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:04:11" (1/1) ... [2020-07-21 12:04:11,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7475494f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:04:11, skipping insertion in model container [2020-07-21 12:04:11,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:04:11" (1/1) ... [2020-07-21 12:04:11,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 12:04:11,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 12:04:11,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:04:11,538 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 12:04:11,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:04:11,571 INFO L208 MainTranslator]: Completed translation [2020-07-21 12:04:11,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:04:11 WrapperNode [2020-07-21 12:04:11,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 12:04:11,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 12:04:11,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 12:04:11,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 12:04:11,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:04:11" (1/1) ... [2020-07-21 12:04:11,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:04:11" (1/1) ... [2020-07-21 12:04:11,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:04:11" (1/1) ... [2020-07-21 12:04:11,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:04:11" (1/1) ... [2020-07-21 12:04:11,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:04:11" (1/1) ... [2020-07-21 12:04:11,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:04:11" (1/1) ... [2020-07-21 12:04:11,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:04:11" (1/1) ... [2020-07-21 12:04:11,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 12:04:11,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 12:04:11,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 12:04:11,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 12:04:11,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:04:11" (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 [2020-07-21 12:04:11,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 12:04:11,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 12:04:11,785 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 12:04:11,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 12:04:11,785 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 12:04:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 12:04:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 12:04:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 12:04:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 12:04:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 12:04:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 12:04:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 12:04:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 12:04:12,008 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 12:04:12,008 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 12:04:12,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:04:12 BoogieIcfgContainer [2020-07-21 12:04:12,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 12:04:12,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 12:04:12,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 12:04:12,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 12:04:12,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:04:11" (1/3) ... [2020-07-21 12:04:12,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea50062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:04:12, skipping insertion in model container [2020-07-21 12:04:12,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:04:11" (2/3) ... [2020-07-21 12:04:12,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea50062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:04:12, skipping insertion in model container [2020-07-21 12:04:12,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:04:12" (3/3) ... [2020-07-21 12:04:12,024 INFO L109 eAbstractionObserver]: Analyzing ICFG loopv1.c [2020-07-21 12:04:12,039 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 12:04:12,048 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 12:04:12,062 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 12:04:12,089 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 12:04:12,089 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 12:04:12,089 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 12:04:12,089 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 12:04:12,090 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 12:04:12,090 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 12:04:12,090 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 12:04:12,090 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 12:04:12,111 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-07-21 12:04:12,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 12:04:12,117 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:04:12,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:04:12,119 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:04:12,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:04:12,126 INFO L82 PathProgramCache]: Analyzing trace with hash -712399266, now seen corresponding path program 1 times [2020-07-21 12:04:12,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:04:12,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516191350] [2020-07-21 12:04:12,135 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:04:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:04:12,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 12:04:12,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:04:12,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:04:12,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:04:12,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516191350] [2020-07-21 12:04:12,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:04:12,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 12:04:12,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662607436] [2020-07-21 12:04:12,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 12:04:12,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:04:12,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 12:04:12,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 12:04:12,292 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-07-21 12:04:12,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:04:12,323 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-07-21 12:04:12,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 12:04:12,325 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-21 12:04:12,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:04:12,336 INFO L225 Difference]: With dead ends: 33 [2020-07-21 12:04:12,337 INFO L226 Difference]: Without dead ends: 14 [2020-07-21 12:04:12,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 12:04:12,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-21 12:04:12,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-21 12:04:12,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-21 12:04:12,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2020-07-21 12:04:12,390 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2020-07-21 12:04:12,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:04:12,391 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2020-07-21 12:04:12,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 12:04:12,391 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2020-07-21 12:04:12,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 12:04:12,392 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:04:12,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:04:12,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:04:12,609 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:04:12,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:04:12,610 INFO L82 PathProgramCache]: Analyzing trace with hash -721634476, now seen corresponding path program 1 times [2020-07-21 12:04:12,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:04:12,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831640238] [2020-07-21 12:04:12,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:04:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:04:12,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 12:04:12,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:04:12,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:04:12,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:04:12,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831640238] [2020-07-21 12:04:12,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:04:12,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 12:04:12,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482295765] [2020-07-21 12:04:12,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 12:04:12,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:04:12,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 12:04:12,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 12:04:12,740 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 5 states. [2020-07-21 12:04:12,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:04:12,832 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-07-21 12:04:12,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 12:04:12,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-21 12:04:12,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:04:12,837 INFO L225 Difference]: With dead ends: 21 [2020-07-21 12:04:12,837 INFO L226 Difference]: Without dead ends: 16 [2020-07-21 12:04:12,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:04:12,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-21 12:04:12,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-07-21 12:04:12,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-21 12:04:12,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-07-21 12:04:12,846 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2020-07-21 12:04:12,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:04:12,847 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-07-21 12:04:12,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 12:04:12,847 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-21 12:04:12,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 12:04:12,848 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:04:12,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:04:13,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:04:13,057 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:04:13,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:04:13,058 INFO L82 PathProgramCache]: Analyzing trace with hash -955216975, now seen corresponding path program 1 times [2020-07-21 12:04:13,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:04:13,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914259976] [2020-07-21 12:04:13,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:04:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:04:13,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 12:04:13,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:04:13,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:04:13,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:04:13,182 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:04:13,184 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:04:13,186 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:04:13,191 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:04:13,194 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:04:13,196 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:04:13,198 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:04:13,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 12:04:13,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914259976] [2020-07-21 12:04:13,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 12:04:13,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2020-07-21 12:04:13,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203972844] [2020-07-21 12:04:13,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 12:04:13,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:04:13,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 12:04:13,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 12:04:13,263 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2020-07-21 12:04:13,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:04:13,304 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2020-07-21 12:04:13,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 12:04:13,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-21 12:04:13,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:04:13,305 INFO L225 Difference]: With dead ends: 15 [2020-07-21 12:04:13,305 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 12:04:13,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:04:13,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 12:04:13,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 12:04:13,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 12:04:13,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 12:04:13,307 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-07-21 12:04:13,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:04:13,308 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 12:04:13,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 12:04:13,308 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 12:04:13,308 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 12:04:13,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:04:13,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 12:04:13,606 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 12:04:13,607 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 12:04:13,607 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 12:04:13,607 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 12:04:13,607 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 12:04:13,607 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 12:04:13,607 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 12:04:13,608 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 7 9) no Hoare annotation was computed. [2020-07-21 12:04:13,608 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-21 12:04:13,608 INFO L268 CegarLoopResult]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2020-07-21 12:04:13,608 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2020-07-21 12:04:13,608 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-07-21 12:04:13,609 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 18 32) the Hoare annotation is: true [2020-07-21 12:04:13,609 INFO L268 CegarLoopResult]: For program point L25(lines 25 28) no Hoare annotation was computed. [2020-07-21 12:04:13,609 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 18 32) no Hoare annotation was computed. [2020-07-21 12:04:13,609 INFO L264 CegarLoopResult]: At program point L25-2(lines 23 29) the Hoare annotation is: (= 0 (mod main_~i~0 3)) [2020-07-21 12:04:13,609 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-07-21 12:04:13,610 INFO L264 CegarLoopResult]: At program point L23-2(lines 23 29) the Hoare annotation is: (= 0 (mod main_~i~0 3)) [2020-07-21 12:04:13,610 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 18 32) no Hoare annotation was computed. [2020-07-21 12:04:13,610 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 10 15) the Hoare annotation is: true [2020-07-21 12:04:13,610 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-07-21 12:04:13,610 INFO L268 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-07-21 12:04:13,611 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 10 15) no Hoare annotation was computed. [2020-07-21 12:04:13,611 INFO L268 CegarLoopResult]: For program point L11-2(lines 10 15) no Hoare annotation was computed. [2020-07-21 12:04:13,611 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-07-21 12:04:13,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:04:13 BoogieIcfgContainer [2020-07-21 12:04:13,635 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 12:04:13,639 INFO L168 Benchmark]: Toolchain (without parser) took 2367.97 ms. Allocated memory was 141.6 MB in the beginning and 199.2 MB in the end (delta: 57.7 MB). Free memory was 99.3 MB in the beginning and 103.9 MB in the end (delta: -4.6 MB). Peak memory consumption was 53.1 MB. Max. memory is 7.1 GB. [2020-07-21 12:04:13,640 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 141.6 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 12:04:13,641 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.39 ms. Allocated memory is still 141.6 MB. Free memory was 98.9 MB in the beginning and 89.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-21 12:04:13,642 INFO L168 Benchmark]: Boogie Preprocessor took 127.37 ms. Allocated memory was 141.6 MB in the beginning and 199.2 MB in the end (delta: 57.7 MB). Free memory was 89.1 MB in the beginning and 178.2 MB in the end (delta: -89.1 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-07-21 12:04:13,644 INFO L168 Benchmark]: RCFGBuilder took 312.82 ms. Allocated memory is still 199.2 MB. Free memory was 178.2 MB in the beginning and 165.1 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-07-21 12:04:13,644 INFO L168 Benchmark]: TraceAbstraction took 1620.76 ms. Allocated memory is still 199.2 MB. Free memory was 165.1 MB in the beginning and 103.9 MB in the end (delta: 61.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. [2020-07-21 12:04:13,649 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 141.6 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 299.39 ms. Allocated memory is still 141.6 MB. Free memory was 98.9 MB in the beginning and 89.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.37 ms. Allocated memory was 141.6 MB in the beginning and 199.2 MB in the end (delta: 57.7 MB). Free memory was 89.1 MB in the beginning and 178.2 MB in the end (delta: -89.1 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 312.82 ms. Allocated memory is still 199.2 MB. Free memory was 178.2 MB in the beginning and 165.1 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1620.76 ms. Allocated memory is still 199.2 MB. Free memory was 165.1 MB in the beginning and 103.9 MB in the end (delta: 61.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 23]: Loop Invariant Derived loop invariant: 0 == i % 3 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 3 SDslu, 47 SDs, 0 SdLazy, 38 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 15 HoareAnnotationTreeSize, 9 FomulaSimplifications, 10 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 1084 SizeOfPredicates, 4 NumberOfNonLiveVariables, 105 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 1/2 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...