/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/for_bounded_loop1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:56:56,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:56:56,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:56:56,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:56:56,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:56:56,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:56:56,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:56:56,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:56:56,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:56:56,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:56:56,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:56:56,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:56:56,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:56:56,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:56:56,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:56:56,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:56:56,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:56:56,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:56:56,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:56:56,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:56:56,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:56:56,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:56:56,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:56:56,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:56:56,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 16:56:56,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 16:56:56,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 16:56:56,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 16:56:56,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 16:56:56,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 16:56:56,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 16:56:56,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 16:56:56,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 16:56:56,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 16:56:56,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 16:56:56,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 16:56:56,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 16:56:56,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 16:56:56,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:56:56,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:56:56,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:56:56,749 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 [2020-08-22 16:56:56,770 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:56:56,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:56:56,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:56:56,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:56:56,772 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:56:56,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:56:56,773 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:56:56,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:56:56,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:56:56,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:56:56,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:56:56,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:56:56,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:56:56,774 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:56:56,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:56:56,774 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:56:56,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:56:56,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:56:56,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:56:56,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:56:56,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:56:56,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:56:56,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:56:56,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:56:56,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:56:56,776 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:56:56,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:56:56,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:56:56,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:56:56,777 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:56:57,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:56:57,107 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:56:57,116 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:56:57,118 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:56:57,118 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:56:57,125 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/for_bounded_loop1.c [2020-08-22 16:56:57,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a67167474/9db57acc03ed4810903599a6eac2bf63/FLAG7f8e054f1 [2020-08-22 16:56:57,661 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:56:57,662 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/for_bounded_loop1.c [2020-08-22 16:56:57,669 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a67167474/9db57acc03ed4810903599a6eac2bf63/FLAG7f8e054f1 [2020-08-22 16:56:58,026 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a67167474/9db57acc03ed4810903599a6eac2bf63 [2020-08-22 16:56:58,034 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:56:58,036 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:56:58,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:58,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:56:58,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:56:58,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:58" (1/1) ... [2020-08-22 16:56:58,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75308d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:58, skipping insertion in model container [2020-08-22 16:56:58,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:58" (1/1) ... [2020-08-22 16:56:58,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:56:58,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:56:58,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:58,297 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:56:58,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:58,335 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:56:58,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:58 WrapperNode [2020-08-22 16:56:58,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:58,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:56:58,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:56:58,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:56:58,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:58" (1/1) ... [2020-08-22 16:56:58,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:58" (1/1) ... [2020-08-22 16:56:58,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:58" (1/1) ... [2020-08-22 16:56:58,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:58" (1/1) ... [2020-08-22 16:56:58,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:58" (1/1) ... [2020-08-22 16:56:58,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:58" (1/1) ... [2020-08-22 16:56:58,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:58" (1/1) ... [2020-08-22 16:56:58,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:56:58,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:56:58,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:56:58,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:56:58,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:58" (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 [2020-08-22 16:56:58,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:56:58,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:56:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 16:56:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 16:56:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:56:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:56:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 16:56:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 16:56:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:56:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:56:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:56:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:56:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:56:58,721 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:56:58,721 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 16:56:58,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:58 BoogieIcfgContainer [2020-08-22 16:56:58,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:56:58,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:56:58,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:56:58,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:56:58,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:56:58" (1/3) ... [2020-08-22 16:56:58,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22496a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:58, skipping insertion in model container [2020-08-22 16:56:58,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:58" (2/3) ... [2020-08-22 16:56:58,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22496a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:58, skipping insertion in model container [2020-08-22 16:56:58,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:58" (3/3) ... [2020-08-22 16:56:58,760 INFO L109 eAbstractionObserver]: Analyzing ICFG for_bounded_loop1.c [2020-08-22 16:56:58,785 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:56:58,793 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:56:58,812 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:56:58,842 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:56:58,842 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:56:58,842 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:56:58,842 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:56:58,842 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:56:58,842 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:56:58,842 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:56:58,843 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:56:58,860 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-08-22 16:56:58,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-22 16:56:58,865 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:58,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:56:58,866 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:58,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:58,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1474053726, now seen corresponding path program 1 times [2020-08-22 16:56:58,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:58,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336774133] [2020-08-22 16:56:58,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:58,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:58,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:56:58,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336774133] [2020-08-22 16:56:58,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:58,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-22 16:56:58,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502570415] [2020-08-22 16:56:59,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-22 16:56:59,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:59,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-22 16:56:59,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-22 16:56:59,022 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-08-22 16:56:59,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:59,050 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2020-08-22 16:56:59,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-22 16:56:59,052 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-08-22 16:56:59,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:59,067 INFO L225 Difference]: With dead ends: 40 [2020-08-22 16:56:59,068 INFO L226 Difference]: Without dead ends: 19 [2020-08-22 16:56:59,073 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 [2020-08-22 16:56:59,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-08-22 16:56:59,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-08-22 16:56:59,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-22 16:56:59,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-08-22 16:56:59,118 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2020-08-22 16:56:59,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:59,118 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-08-22 16:56:59,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-22 16:56:59,119 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-08-22 16:56:59,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-22 16:56:59,120 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:59,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:56:59,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:56:59,121 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:59,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:59,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1462047953, now seen corresponding path program 1 times [2020-08-22 16:56:59,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:59,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397486758] [2020-08-22 16:56:59,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:59,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:59,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:56:59,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397486758] [2020-08-22 16:56:59,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:59,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 16:56:59,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890769563] [2020-08-22 16:56:59,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 16:56:59,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:59,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 16:56:59,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 16:56:59,176 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2020-08-22 16:56:59,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:59,219 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2020-08-22 16:56:59,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 16:56:59,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-08-22 16:56:59,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:59,222 INFO L225 Difference]: With dead ends: 27 [2020-08-22 16:56:59,222 INFO L226 Difference]: Without dead ends: 20 [2020-08-22 16:56:59,224 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 [2020-08-22 16:56:59,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-08-22 16:56:59,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-08-22 16:56:59,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-08-22 16:56:59,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-08-22 16:56:59,231 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2020-08-22 16:56:59,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:59,231 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-08-22 16:56:59,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 16:56:59,232 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-08-22 16:56:59,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-22 16:56:59,232 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:59,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:56:59,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:56:59,233 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:59,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:59,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1463775831, now seen corresponding path program 1 times [2020-08-22 16:56:59,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:59,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982061645] [2020-08-22 16:56:59,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:59,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:59,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:56:59,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982061645] [2020-08-22 16:56:59,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:59,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 16:56:59,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469667708] [2020-08-22 16:56:59,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:56:59,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:59,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:56:59,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:56:59,356 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 6 states. [2020-08-22 16:56:59,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:59,471 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2020-08-22 16:56:59,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 16:56:59,472 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-08-22 16:56:59,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:59,474 INFO L225 Difference]: With dead ends: 28 [2020-08-22 16:56:59,474 INFO L226 Difference]: Without dead ends: 26 [2020-08-22 16:56:59,475 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 [2020-08-22 16:56:59,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-22 16:56:59,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-08-22 16:56:59,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-22 16:56:59,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-08-22 16:56:59,485 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 11 [2020-08-22 16:56:59,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:59,486 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-08-22 16:56:59,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:56:59,486 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-08-22 16:56:59,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-22 16:56:59,487 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:59,487 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:56:59,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 16:56:59,488 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:59,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:59,489 INFO L82 PathProgramCache]: Analyzing trace with hash -541842987, now seen corresponding path program 1 times [2020-08-22 16:56:59,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:59,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693872255] [2020-08-22 16:56:59,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:59,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:59,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:56:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:59,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:56:59,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693872255] [2020-08-22 16:56:59,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:59,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 16:56:59,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486466205] [2020-08-22 16:56:59,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 16:56:59,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:59,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 16:56:59,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 16:56:59,609 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 7 states. [2020-08-22 16:56:59,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:59,719 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-08-22 16:56:59,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 16:56:59,719 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-08-22 16:56:59,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:59,721 INFO L225 Difference]: With dead ends: 32 [2020-08-22 16:56:59,721 INFO L226 Difference]: Without dead ends: 28 [2020-08-22 16:56:59,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 16:56:59,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-22 16:56:59,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-08-22 16:56:59,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-22 16:56:59,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-08-22 16:56:59,730 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 18 [2020-08-22 16:56:59,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:59,731 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-08-22 16:56:59,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 16:56:59,731 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-08-22 16:56:59,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 16:56:59,736 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:59,736 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] [2020-08-22 16:56:59,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 16:56:59,737 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:59,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:59,738 INFO L82 PathProgramCache]: Analyzing trace with hash 814692392, now seen corresponding path program 1 times [2020-08-22 16:56:59,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:59,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061862258] [2020-08-22 16:56:59,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:56:59,757 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:56:59,774 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:59,795 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:56:59,795 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:56:59,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 16:56:59,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:56:59 BoogieIcfgContainer [2020-08-22 16:56:59,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:56:59,827 INFO L168 Benchmark]: Toolchain (without parser) took 1790.44 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 102.2 MB in the beginning and 96.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:59,828 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 16:56:59,829 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.80 ms. Allocated memory is still 138.9 MB. Free memory was 101.7 MB in the beginning and 92.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:59,830 INFO L168 Benchmark]: Boogie Preprocessor took 104.95 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 92.2 MB in the beginning and 181.3 MB in the end (delta: -89.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:59,831 INFO L168 Benchmark]: RCFGBuilder took 285.91 ms. Allocated memory is still 201.3 MB. Free memory was 181.3 MB in the beginning and 167.0 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:59,832 INFO L168 Benchmark]: TraceAbstraction took 1083.30 ms. Allocated memory is still 201.3 MB. Free memory was 166.3 MB in the beginning and 96.8 MB in the end (delta: 69.5 MB). Peak memory consumption was 69.5 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:59,836 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 298.80 ms. Allocated memory is still 138.9 MB. Free memory was 101.7 MB in the beginning and 92.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.95 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 92.2 MB in the beginning and 181.3 MB in the end (delta: -89.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 285.91 ms. Allocated memory is still 201.3 MB. Free memory was 181.3 MB in the beginning and 167.0 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1083.30 ms. Allocated memory is still 201.3 MB. Free memory was 166.3 MB in the beginning and 96.8 MB in the end (delta: 69.5 MB). Peak memory consumption was 69.5 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