/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 FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/for_bounded_loop1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:29:24,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:29:24,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:29:24,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:29:24,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:29:24,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:29:24,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:29:24,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:29:24,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:29:24,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:29:24,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:29:24,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:29:24,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:29:24,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:29:24,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:29:24,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:29:24,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:29:24,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:29:24,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:29:24,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:29:24,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:29:24,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:29:24,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:29:24,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:29:24,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 21:29:24,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:29:24,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:29:24,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:29:24,624 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 21:29:24,660 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:29:24,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:29:24,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:29:24,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:29:24,662 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:29:24,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:29:24,667 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:29:24,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:29:24,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:29:24,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:29:24,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:29:24,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:29:24,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:29:24,668 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:29:24,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:29:24,669 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:29:24,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:29:24,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:29:24,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:29:24,670 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:29:24,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:29:24,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:29:24,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:29:24,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:29:24,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:29:24,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:29:24,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:29:24,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:29:24,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:29:24,672 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 -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-08-21 21:29:24,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:29:25,004 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:29:25,008 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:29:25,009 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:29:25,010 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:29:25,011 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/for_bounded_loop1.c [2020-08-21 21:29:25,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d465e4c3b/b163cd560adb473ab0f4d2e14016a013/FLAGb99f1a8fe [2020-08-21 21:29:25,540 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:29:25,541 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/for_bounded_loop1.c [2020-08-21 21:29:25,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d465e4c3b/b163cd560adb473ab0f4d2e14016a013/FLAGb99f1a8fe [2020-08-21 21:29:25,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d465e4c3b/b163cd560adb473ab0f4d2e14016a013 [2020-08-21 21:29:25,936 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:29:25,937 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:29:25,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:29:25,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:29:25,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:29:25,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:29:25" (1/1) ... [2020-08-21 21:29:25,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:25, skipping insertion in model container [2020-08-21 21:29:25,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:29:25" (1/1) ... [2020-08-21 21:29:25,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:29:25,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:29:26,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:29:26,150 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:29:26,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:29:26,177 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:29:26,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:26 WrapperNode [2020-08-21 21:29:26,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:29:26,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:29:26,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:29:26,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:29:26,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:26" (1/1) ... [2020-08-21 21:29:26,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:26" (1/1) ... [2020-08-21 21:29:26,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:26" (1/1) ... [2020-08-21 21:29:26,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:26" (1/1) ... [2020-08-21 21:29:26,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:26" (1/1) ... [2020-08-21 21:29:26,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:26" (1/1) ... [2020-08-21 21:29:26,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:26" (1/1) ... [2020-08-21 21:29:26,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:29:26,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:29:26,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:29:26,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:29:26,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-21 21:29:26,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:29:26,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:29:26,363 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 21:29:26,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 21:29:26,364 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:29:26,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:29:26,364 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 21:29:26,364 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 21:29:26,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 21:29:26,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:29:26,365 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:29:26,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:29:26,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:29:26,592 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:29:26,593 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 21:29:26,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:29:26 BoogieIcfgContainer [2020-08-21 21:29:26,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:29:26,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:29:26,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:29:26,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:29:26,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:29:25" (1/3) ... [2020-08-21 21:29:26,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c42d671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:29:26, skipping insertion in model container [2020-08-21 21:29:26,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:26" (2/3) ... [2020-08-21 21:29:26,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c42d671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:29:26, skipping insertion in model container [2020-08-21 21:29:26,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:29:26" (3/3) ... [2020-08-21 21:29:26,605 INFO L109 eAbstractionObserver]: Analyzing ICFG for_bounded_loop1.c [2020-08-21 21:29:26,617 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:29:26,624 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:29:26,639 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:29:26,701 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:29:26,705 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:29:26,705 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:29:26,705 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:29:26,705 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:29:26,706 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:29:26,706 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:29:26,706 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:29:26,734 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-08-21 21:29:26,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-21 21:29:26,742 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:29:26,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:29:26,743 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:29:26,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:29:26,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1474053726, now seen corresponding path program 1 times [2020-08-21 21:29:26,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:29:26,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151856594] [2020-08-21 21:29:26,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:29:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:29:26,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:29:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:29:26,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:29:26,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151856594] [2020-08-21 21:29:26,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:29:26,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-21 21:29:26,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673573607] [2020-08-21 21:29:26,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-21 21:29:26,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:29:26,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-21 21:29:26,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-21 21:29:26,907 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-08-21 21:29:26,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:29:26,927 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2020-08-21 21:29:26,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-21 21:29:26,929 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-08-21 21:29:26,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:29:26,937 INFO L225 Difference]: With dead ends: 40 [2020-08-21 21:29:26,937 INFO L226 Difference]: Without dead ends: 19 [2020-08-21 21:29:26,940 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 [2020-08-21 21:29:26,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-08-21 21:29:26,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-08-21 21:29:26,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-21 21:29:26,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-08-21 21:29:26,981 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2020-08-21 21:29:26,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:29:26,982 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-08-21 21:29:26,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-21 21:29:26,982 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-08-21 21:29:26,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-21 21:29:26,983 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:29:26,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:29:26,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:29:26,984 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:29:26,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:29:26,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1462047953, now seen corresponding path program 1 times [2020-08-21 21:29:26,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:29:26,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951119311] [2020-08-21 21:29:26,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:29:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:29:27,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:29:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:29:27,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:29:27,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951119311] [2020-08-21 21:29:27,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:29:27,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 21:29:27,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832674203] [2020-08-21 21:29:27,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 21:29:27,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:29:27,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 21:29:27,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 21:29:27,041 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2020-08-21 21:29:27,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:29:27,082 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2020-08-21 21:29:27,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 21:29:27,082 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-08-21 21:29:27,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:29:27,084 INFO L225 Difference]: With dead ends: 27 [2020-08-21 21:29:27,084 INFO L226 Difference]: Without dead ends: 20 [2020-08-21 21:29:27,085 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 [2020-08-21 21:29:27,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-08-21 21:29:27,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-08-21 21:29:27,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-08-21 21:29:27,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-08-21 21:29:27,093 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2020-08-21 21:29:27,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:29:27,093 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-08-21 21:29:27,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 21:29:27,094 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-08-21 21:29:27,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-21 21:29:27,094 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:29:27,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:29:27,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:29:27,095 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:29:27,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:29:27,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1463775831, now seen corresponding path program 1 times [2020-08-21 21:29:27,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:29:27,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264725298] [2020-08-21 21:29:27,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:29:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:29:27,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:29:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:29:27,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:29:27,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264725298] [2020-08-21 21:29:27,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:29:27,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 21:29:27,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091915875] [2020-08-21 21:29:27,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 21:29:27,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:29:27,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 21:29:27,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 21:29:27,227 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 6 states. [2020-08-21 21:29:27,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:29:27,346 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2020-08-21 21:29:27,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 21:29:27,347 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-08-21 21:29:27,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:29:27,348 INFO L225 Difference]: With dead ends: 28 [2020-08-21 21:29:27,348 INFO L226 Difference]: Without dead ends: 26 [2020-08-21 21:29:27,349 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 [2020-08-21 21:29:27,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-21 21:29:27,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-08-21 21:29:27,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-21 21:29:27,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-08-21 21:29:27,364 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 11 [2020-08-21 21:29:27,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:29:27,364 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-08-21 21:29:27,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 21:29:27,364 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-08-21 21:29:27,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 21:29:27,367 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:29:27,367 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:29:27,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:29:27,368 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:29:27,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:29:27,369 INFO L82 PathProgramCache]: Analyzing trace with hash -541842987, now seen corresponding path program 1 times [2020-08-21 21:29:27,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:29:27,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851651262] [2020-08-21 21:29:27,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:29:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:29:27,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:29:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:29:27,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 21:29:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:29:27,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:29:27,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851651262] [2020-08-21 21:29:27,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:29:27,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 21:29:27,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537826107] [2020-08-21 21:29:27,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 21:29:27,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:29:27,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 21:29:27,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:29:27,522 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 7 states. [2020-08-21 21:29:27,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:29:27,688 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-08-21 21:29:27,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 21:29:27,689 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-08-21 21:29:27,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:29:27,691 INFO L225 Difference]: With dead ends: 32 [2020-08-21 21:29:27,691 INFO L226 Difference]: Without dead ends: 28 [2020-08-21 21:29:27,692 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 [2020-08-21 21:29:27,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-21 21:29:27,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-08-21 21:29:27,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-21 21:29:27,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-08-21 21:29:27,701 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 18 [2020-08-21 21:29:27,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:29:27,702 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-08-21 21:29:27,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 21:29:27,702 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-08-21 21:29:27,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 21:29:27,703 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:29:27,703 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] [2020-08-21 21:29:27,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:29:27,704 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:29:27,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:29:27,705 INFO L82 PathProgramCache]: Analyzing trace with hash 814692392, now seen corresponding path program 1 times [2020-08-21 21:29:27,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:29:27,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347841164] [2020-08-21 21:29:27,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:29:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 21:29:27,725 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 21:29:27,725 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 21:29:27,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 21:29:27,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 09:29:27 BoogieIcfgContainer [2020-08-21 21:29:27,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 21:29:27,750 INFO L168 Benchmark]: Toolchain (without parser) took 1811.22 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 102.9 MB in the beginning and 99.5 MB in the end (delta: 3.4 MB). Peak memory consumption was 59.0 MB. Max. memory is 7.1 GB. [2020-08-21 21:29:27,751 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 21:29:27,752 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.64 ms. Allocated memory is still 146.8 MB. Free memory was 102.7 MB in the beginning and 93.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-21 21:29:27,753 INFO L168 Benchmark]: Boogie Preprocessor took 117.36 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 93.1 MB in the beginning and 182.3 MB in the end (delta: -89.2 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-08-21 21:29:27,754 INFO L168 Benchmark]: RCFGBuilder took 301.33 ms. Allocated memory is still 202.4 MB. Free memory was 182.3 MB in the beginning and 168.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-08-21 21:29:27,755 INFO L168 Benchmark]: TraceAbstraction took 1148.41 ms. Allocated memory is still 202.4 MB. Free memory was 167.7 MB in the beginning and 99.5 MB in the end (delta: 68.2 MB). Peak memory consumption was 68.2 MB. Max. memory is 7.1 GB. [2020-08-21 21:29:27,758 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 239.64 ms. Allocated memory is still 146.8 MB. Free memory was 102.7 MB in the beginning and 93.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.36 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 93.1 MB in the beginning and 182.3 MB in the end (delta: -89.2 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 301.33 ms. Allocated memory is still 202.4 MB. Free memory was 182.3 MB in the beginning and 168.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1148.41 ms. Allocated memory is still 202.4 MB. Free memory was 167.7 MB in the beginning and 99.5 MB in the end (delta: 68.2 MB). Peak memory consumption was 68.2 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 [L20] COND TRUE i