/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy CAMEL_NO_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/for_bounded_loop1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 21:45:45,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:45:45,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:45:45,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:45:45,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:45:45,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:45:45,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:45:45,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:45:45,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:45:45,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:45:45,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:45:45,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:45:45,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:45:45,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:45:45,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:45:45,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:45:45,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:45:45,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:45:45,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:45:45,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:45:45,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:45:45,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:45:45,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:45:45,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:45:45,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 21:45:45,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:45:45,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:45:45,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:45:45,842 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 21:45:45,858 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:45:45,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:45:45,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:45:45,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:45:45,860 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:45:45,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:45:45,860 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:45:45,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:45:45,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:45:45,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:45:45,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:45:45,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:45:45,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:45:45,862 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:45:45,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:45:45,862 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:45:45,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:45:45,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:45:45,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:45:45,863 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:45:45,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:45:45,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:45:45,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:45:45,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:45:45,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:45:45,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:45:45,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:45:45,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:45:45,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:45:45,866 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 21:45:46,158 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:45:46,180 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:45:46,183 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:45:46,185 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:45:46,186 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:45:46,187 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/for_bounded_loop1.c [2020-07-19 21:45:46,272 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9894c8063/c7b27172229842b48af64e006c894053/FLAGeae0282a2 [2020-07-19 21:45:46,774 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:45:46,775 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/for_bounded_loop1.c [2020-07-19 21:45:46,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9894c8063/c7b27172229842b48af64e006c894053/FLAGeae0282a2 [2020-07-19 21:45:47,139 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9894c8063/c7b27172229842b48af64e006c894053 [2020-07-19 21:45:47,149 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:45:47,151 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:45:47,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:45:47,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:45:47,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:45:47,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:45:47" (1/1) ... [2020-07-19 21:45:47,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73b4deeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:47, skipping insertion in model container [2020-07-19 21:45:47,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:45:47" (1/1) ... [2020-07-19 21:45:47,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:45:47,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:45:47,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:45:47,398 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:45:47,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:45:47,430 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:45:47,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:47 WrapperNode [2020-07-19 21:45:47,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:45:47,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:45:47,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:45:47,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:45:47,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:47" (1/1) ... [2020-07-19 21:45:47,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:47" (1/1) ... [2020-07-19 21:45:47,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:47" (1/1) ... [2020-07-19 21:45:47,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:47" (1/1) ... [2020-07-19 21:45:47,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:47" (1/1) ... [2020-07-19 21:45:47,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:47" (1/1) ... [2020-07-19 21:45:47,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:47" (1/1) ... [2020-07-19 21:45:47,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:45:47,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:45:47,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:45:47,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:45:47,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:47" (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 21:45:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:45:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:45:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-19 21:45:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 21:45:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:45:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:45:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 21:45:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-19 21:45:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 21:45:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 21:45:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:45:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:45:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:45:47,848 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:45:47,849 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-19 21:45:47,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:45:47 BoogieIcfgContainer [2020-07-19 21:45:47,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:45:47,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:45:47,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:45:47,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:45:47,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:45:47" (1/3) ... [2020-07-19 21:45:47,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56dd57e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:45:47, skipping insertion in model container [2020-07-19 21:45:47,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:47" (2/3) ... [2020-07-19 21:45:47,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56dd57e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:45:47, skipping insertion in model container [2020-07-19 21:45:47,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:45:47" (3/3) ... [2020-07-19 21:45:47,863 INFO L109 eAbstractionObserver]: Analyzing ICFG for_bounded_loop1.c [2020-07-19 21:45:47,877 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:45:47,886 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 21:45:47,905 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 21:45:47,937 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:45:47,938 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:45:47,938 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:45:47,938 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:45:47,938 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:45:47,939 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:45:47,939 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:45:47,939 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:45:47,969 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-19 21:45:47,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-19 21:45:47,992 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:45:47,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:45:47,994 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:45:48,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:45:48,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1474053726, now seen corresponding path program 1 times [2020-07-19 21:45:48,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:45:48,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948061900] [2020-07-19 21:45:48,034 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@43269413 [2020-07-19 21:45:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:48,157 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 21:45:48,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948061900] [2020-07-19 21:45:48,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:45:48,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-19 21:45:48,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43492561] [2020-07-19 21:45:48,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-19 21:45:48,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:45:48,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-19 21:45:48,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-19 21:45:48,186 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-07-19 21:45:48,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:45:48,214 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2020-07-19 21:45:48,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-19 21:45:48,216 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-07-19 21:45:48,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:45:48,227 INFO L225 Difference]: With dead ends: 40 [2020-07-19 21:45:48,228 INFO L226 Difference]: Without dead ends: 19 [2020-07-19 21:45:48,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-19 21:45:48,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-19 21:45:48,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-19 21:45:48,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-19 21:45:48,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-07-19 21:45:48,288 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2020-07-19 21:45:48,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:45:48,289 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-07-19 21:45:48,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-19 21:45:48,289 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-07-19 21:45:48,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-19 21:45:48,290 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:45:48,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:45:48,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 21:45:48,291 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:45:48,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:45:48,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1462047953, now seen corresponding path program 1 times [2020-07-19 21:45:48,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:45:48,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158129595] [2020-07-19 21:45:48,293 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@43269413 [2020-07-19 21:45:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:48,358 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 21:45:48,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158129595] [2020-07-19 21:45:48,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:45:48,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:45:48,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854353929] [2020-07-19 21:45:48,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:45:48,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:45:48,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:45:48,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:45:48,363 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2020-07-19 21:45:48,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:45:48,389 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2020-07-19 21:45:48,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:45:48,391 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-07-19 21:45:48,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:45:48,393 INFO L225 Difference]: With dead ends: 27 [2020-07-19 21:45:48,393 INFO L226 Difference]: Without dead ends: 20 [2020-07-19 21:45:48,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:45:48,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-19 21:45:48,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-07-19 21:45:48,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-19 21:45:48,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-07-19 21:45:48,403 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2020-07-19 21:45:48,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:45:48,403 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-07-19 21:45:48,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:45:48,404 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-07-19 21:45:48,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-19 21:45:48,405 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:45:48,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:45:48,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 21:45:48,405 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:45:48,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:45:48,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1463775831, now seen corresponding path program 1 times [2020-07-19 21:45:48,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:45:48,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506116756] [2020-07-19 21:45:48,407 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@43269413 [2020-07-19 21:45:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:48,525 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 21:45:48,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506116756] [2020-07-19 21:45:48,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:45:48,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-19 21:45:48,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991082075] [2020-07-19 21:45:48,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 21:45:48,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:45:48,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 21:45:48,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-19 21:45:48,528 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 6 states. [2020-07-19 21:45:48,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:45:48,702 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2020-07-19 21:45:48,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-19 21:45:48,704 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-07-19 21:45:48,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:45:48,707 INFO L225 Difference]: With dead ends: 28 [2020-07-19 21:45:48,707 INFO L226 Difference]: Without dead ends: 26 [2020-07-19 21:45:48,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-19 21:45:48,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-19 21:45:48,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-07-19 21:45:48,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-19 21:45:48,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-07-19 21:45:48,731 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 11 [2020-07-19 21:45:48,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:45:48,732 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-07-19 21:45:48,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 21:45:48,733 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-07-19 21:45:48,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-19 21:45:48,735 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:45:48,735 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:45:48,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 21:45:48,736 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:45:48,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:45:48,737 INFO L82 PathProgramCache]: Analyzing trace with hash -541842987, now seen corresponding path program 1 times [2020-07-19 21:45:48,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:45:48,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451996027] [2020-07-19 21:45:48,739 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@43269413 [2020-07-19 21:45:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:48,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:45:48,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451996027] [2020-07-19 21:45:48,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:45:48,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-19 21:45:48,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471531994] [2020-07-19 21:45:48,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-19 21:45:48,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:45:48,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-19 21:45:48,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-19 21:45:48,986 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 7 states. [2020-07-19 21:45:49,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:45:49,113 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-07-19 21:45:49,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-19 21:45:49,115 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-07-19 21:45:49,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:45:49,116 INFO L225 Difference]: With dead ends: 32 [2020-07-19 21:45:49,116 INFO L226 Difference]: Without dead ends: 28 [2020-07-19 21:45:49,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-07-19 21:45:49,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-19 21:45:49,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-07-19 21:45:49,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-19 21:45:49,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-07-19 21:45:49,128 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 18 [2020-07-19 21:45:49,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:45:49,129 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-07-19 21:45:49,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-19 21:45:49,129 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-07-19 21:45:49,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-19 21:45:49,130 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:45:49,131 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:45:49,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-19 21:45:49,131 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:45:49,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:45:49,132 INFO L82 PathProgramCache]: Analyzing trace with hash 814692392, now seen corresponding path program 1 times [2020-07-19 21:45:49,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:45:49,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594293022] [2020-07-19 21:45:49,133 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@43269413 [2020-07-19 21:45:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:45:49,151 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:45:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:45:49,183 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:45:49,221 INFO L174 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2020-07-19 21:45:49,221 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 21:45:49,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-19 21:45:49,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:45:49 BoogieIcfgContainer [2020-07-19 21:45:49,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 21:45:49,261 INFO L168 Benchmark]: Toolchain (without parser) took 2108.01 ms. Allocated memory was 142.6 MB in the beginning and 201.3 MB in the end (delta: 58.7 MB). Free memory was 101.2 MB in the beginning and 94.8 MB in the end (delta: 6.4 MB). Peak memory consumption was 65.2 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:49,265 INFO L168 Benchmark]: CDTParser took 1.24 ms. Allocated memory is still 142.6 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-19 21:45:49,266 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.18 ms. Allocated memory is still 142.6 MB. Free memory was 100.8 MB in the beginning and 90.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:49,268 INFO L168 Benchmark]: Boogie Preprocessor took 125.58 ms. Allocated memory was 142.6 MB in the beginning and 201.3 MB in the end (delta: 58.7 MB). Free memory was 90.8 MB in the beginning and 180.1 MB in the end (delta: -89.3 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:49,275 INFO L168 Benchmark]: RCFGBuilder took 296.43 ms. Allocated memory is still 201.3 MB. Free memory was 179.4 MB in the beginning and 166.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:49,277 INFO L168 Benchmark]: TraceAbstraction took 1401.58 ms. Allocated memory is still 201.3 MB. Free memory was 166.4 MB in the beginning and 94.8 MB in the end (delta: 71.6 MB). Peak memory consumption was 71.6 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:49,290 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.24 ms. Allocated memory is still 142.6 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 278.18 ms. Allocated memory is still 142.6 MB. Free memory was 100.8 MB in the beginning and 90.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.58 ms. Allocated memory was 142.6 MB in the beginning and 201.3 MB in the end (delta: 58.7 MB). Free memory was 90.8 MB in the beginning and 180.1 MB in the end (delta: -89.3 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 296.43 ms. Allocated memory is still 201.3 MB. Free memory was 179.4 MB in the beginning and 166.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1401.58 ms. Allocated memory is still 201.3 MB. Free memory was 166.4 MB in the beginning and 94.8 MB in the end (delta: 71.6 MB). Peak memory consumption was 71.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 9]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int i=0, x=0, y=0; [L18] int n=__VERIFIER_nondet_int(); [L19] COND FALSE !(!(n>0)) [L20] i=0 VAL [i=0, n=1, x=0, y=0] [L20] COND TRUE i