/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -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-c90d42b [2020-09-24 15:07:19,690 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-09-24 15:07:19,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:07:19,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:07:19,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:07:19,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:07:19,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:07:19,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:07:19,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:07:19,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:07:19,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:07:19,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:07:19,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:07:19,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:07:19,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:07:19,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:07:19,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:07:19,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:07:19,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:07:19,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:07:19,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:07:19,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:07:19,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 15:07:19,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:07:19,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:07:19,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:07:19,818 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 [2020-09-24 15:07:19,852 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:07:19,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:07:19,854 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:07:19,854 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:07:19,855 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:07:19,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:07:19,855 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:07:19,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:07:19,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:07:19,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:07:19,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:07:19,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:07:19,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:07:19,856 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:07:19,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:07:19,857 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:07:19,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:07:19,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:07:19,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:07:19,858 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:07:19,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:07:19,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:07:19,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:07:19,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:07:19,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:07:19,859 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:07:19,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:07:19,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:07:19,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:07:19,860 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 15:07:20,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:07:20,369 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:07:20,374 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:07:20,375 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:07:20,376 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:07:20,377 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/for_bounded_loop1.c [2020-09-24 15:07:20,472 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e69679037/e159ccf3a78d4bc8918b36bdd47797a7/FLAGfc84006dd [2020-09-24 15:07:21,011 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:07:21,012 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/for_bounded_loop1.c [2020-09-24 15:07:21,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e69679037/e159ccf3a78d4bc8918b36bdd47797a7/FLAGfc84006dd [2020-09-24 15:07:21,458 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e69679037/e159ccf3a78d4bc8918b36bdd47797a7 [2020-09-24 15:07:21,470 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:07:21,476 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:07:21,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:07:21,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:07:21,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:07:21,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:07:21" (1/1) ... [2020-09-24 15:07:21,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bdaa1ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:07:21, skipping insertion in model container [2020-09-24 15:07:21,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:07:21" (1/1) ... [2020-09-24 15:07:21,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:07:21,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:07:21,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:07:21,733 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:07:21,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:07:21,773 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:07:21,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:07:21 WrapperNode [2020-09-24 15:07:21,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:07:21,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:07:21,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:07:21,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:07:21,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:07:21" (1/1) ... [2020-09-24 15:07:21,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:07:21" (1/1) ... [2020-09-24 15:07:21,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:07:21" (1/1) ... [2020-09-24 15:07:21,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:07:21" (1/1) ... [2020-09-24 15:07:21,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:07:21" (1/1) ... [2020-09-24 15:07:21,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:07:21" (1/1) ... [2020-09-24 15:07:21,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:07:21" (1/1) ... [2020-09-24 15:07:21,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:07:21,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:07:21,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:07:21,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:07:21,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:07:21" (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 [2020-09-24 15:07:21,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:07:21,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:07:21,959 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 15:07:21,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 15:07:21,959 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:07:21,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:07:21,959 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 15:07:21,960 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 15:07:21,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 15:07:21,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 15:07:21,960 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:07:21,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:07:21,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:07:22,181 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:07:22,182 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 15:07:22,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:07:22 BoogieIcfgContainer [2020-09-24 15:07:22,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:07:22,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:07:22,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:07:22,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:07:22,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:07:21" (1/3) ... [2020-09-24 15:07:22,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb8a4bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:07:22, skipping insertion in model container [2020-09-24 15:07:22,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:07:21" (2/3) ... [2020-09-24 15:07:22,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb8a4bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:07:22, skipping insertion in model container [2020-09-24 15:07:22,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:07:22" (3/3) ... [2020-09-24 15:07:22,199 INFO L109 eAbstractionObserver]: Analyzing ICFG for_bounded_loop1.c [2020-09-24 15:07:22,214 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:07:22,224 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:07:22,260 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:07:22,307 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:07:22,308 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:07:22,308 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:07:22,308 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:07:22,308 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:07:22,308 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:07:22,309 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:07:22,309 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:07:22,332 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-09-24 15:07:22,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 15:07:22,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:07:22,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:07:22,340 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:07:22,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:07:22,346 INFO L82 PathProgramCache]: Analyzing trace with hash 546510172, now seen corresponding path program 1 times [2020-09-24 15:07:22,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:07:22,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491896198] [2020-09-24 15:07:22,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:07:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:22,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:07:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:22,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:07:22,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491896198] [2020-09-24 15:07:22,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:07:22,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-24 15:07:22,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487525345] [2020-09-24 15:07:22,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-24 15:07:22,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:07:22,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-24 15:07:22,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 15:07:22,528 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-09-24 15:07:22,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:07:22,560 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2020-09-24 15:07:22,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-24 15:07:22,562 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2020-09-24 15:07:22,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:07:22,574 INFO L225 Difference]: With dead ends: 61 [2020-09-24 15:07:22,574 INFO L226 Difference]: Without dead ends: 31 [2020-09-24 15:07:22,579 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 [2020-09-24 15:07:22,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-24 15:07:22,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-24 15:07:22,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-24 15:07:22,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-09-24 15:07:22,630 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 17 [2020-09-24 15:07:22,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:07:22,631 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-09-24 15:07:22,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-24 15:07:22,631 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-09-24 15:07:22,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 15:07:22,632 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:07:22,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:07:22,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:07:22,633 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:07:22,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:07:22,634 INFO L82 PathProgramCache]: Analyzing trace with hash 528039752, now seen corresponding path program 1 times [2020-09-24 15:07:22,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:07:22,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732496702] [2020-09-24 15:07:22,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:07:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:22,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:07:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:22,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:07:22,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732496702] [2020-09-24 15:07:22,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:07:22,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:07:22,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769137586] [2020-09-24 15:07:22,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:07:22,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:07:22,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:07:22,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:07:22,716 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 4 states. [2020-09-24 15:07:22,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:07:22,774 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-09-24 15:07:22,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 15:07:22,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-24 15:07:22,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:07:22,776 INFO L225 Difference]: With dead ends: 39 [2020-09-24 15:07:22,776 INFO L226 Difference]: Without dead ends: 32 [2020-09-24 15:07:22,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:07:22,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-24 15:07:22,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-09-24 15:07:22,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-24 15:07:22,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-09-24 15:07:22,786 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 17 [2020-09-24 15:07:22,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:07:22,787 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-09-24 15:07:22,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:07:22,787 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-09-24 15:07:22,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-24 15:07:22,788 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:07:22,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:07:22,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:07:22,789 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:07:22,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:07:22,790 INFO L82 PathProgramCache]: Analyzing trace with hash -789875431, now seen corresponding path program 1 times [2020-09-24 15:07:22,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:07:22,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487638092] [2020-09-24 15:07:22,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:07:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:22,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:07:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:22,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:07:22,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487638092] [2020-09-24 15:07:22,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:07:22,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 15:07:22,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548740838] [2020-09-24 15:07:22,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 15:07:22,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:07:22,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 15:07:22,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:07:22,914 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 6 states. [2020-09-24 15:07:23,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:07:23,007 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-09-24 15:07:23,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 15:07:23,008 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-09-24 15:07:23,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:07:23,009 INFO L225 Difference]: With dead ends: 42 [2020-09-24 15:07:23,009 INFO L226 Difference]: Without dead ends: 40 [2020-09-24 15:07:23,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:07:23,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-24 15:07:23,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2020-09-24 15:07:23,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 15:07:23,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-09-24 15:07:23,023 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 18 [2020-09-24 15:07:23,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:07:23,024 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-09-24 15:07:23,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 15:07:23,024 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-09-24 15:07:23,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-24 15:07:23,025 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:07:23,025 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:07:23,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:07:23,026 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:07:23,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:07:23,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1565658423, now seen corresponding path program 1 times [2020-09-24 15:07:23,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:07:23,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972898667] [2020-09-24 15:07:23,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:07:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:23,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:07:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:23,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 15:07:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:23,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:07:23,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972898667] [2020-09-24 15:07:23,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:07:23,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 15:07:23,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575390106] [2020-09-24 15:07:23,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 15:07:23,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:07:23,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 15:07:23,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:07:23,184 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 8 states. [2020-09-24 15:07:23,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:07:23,370 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-09-24 15:07:23,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 15:07:23,371 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-09-24 15:07:23,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:07:23,372 INFO L225 Difference]: With dead ends: 46 [2020-09-24 15:07:23,373 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 15:07:23,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-24 15:07:23,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 15:07:23,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2020-09-24 15:07:23,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 15:07:23,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2020-09-24 15:07:23,382 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 28 [2020-09-24 15:07:23,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:07:23,383 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2020-09-24 15:07:23,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 15:07:23,383 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2020-09-24 15:07:23,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 15:07:23,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:07:23,385 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:07:23,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:07:23,385 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:07:23,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:07:23,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1612602333, now seen corresponding path program 1 times [2020-09-24 15:07:23,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:07:23,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626437882] [2020-09-24 15:07:23,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:07:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 15:07:23,407 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 15:07:23,407 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 15:07:23,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:07:23,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:07:23 BoogieIcfgContainer [2020-09-24 15:07:23,431 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:07:23,435 INFO L168 Benchmark]: Toolchain (without parser) took 1961.15 ms. Allocated memory was 143.7 MB in the beginning and 230.7 MB in the end (delta: 87.0 MB). Free memory was 104.9 MB in the beginning and 185.0 MB in the end (delta: -80.2 MB). Peak memory consumption was 6.9 MB. Max. memory is 7.1 GB. [2020-09-24 15:07:23,436 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 143.7 MB. Free memory was 123.9 MB in the beginning and 123.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 15:07:23,437 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.73 ms. Allocated memory is still 143.7 MB. Free memory was 104.2 MB in the beginning and 94.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-24 15:07:23,438 INFO L168 Benchmark]: Boogie Preprocessor took 113.73 ms. Allocated memory was 143.7 MB in the beginning and 204.5 MB in the end (delta: 60.8 MB). Free memory was 94.8 MB in the beginning and 182.7 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-24 15:07:23,439 INFO L168 Benchmark]: RCFGBuilder took 299.68 ms. Allocated memory is still 204.5 MB. Free memory was 182.7 MB in the beginning and 169.3 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-09-24 15:07:23,440 INFO L168 Benchmark]: TraceAbstraction took 1241.76 ms. Allocated memory was 204.5 MB in the beginning and 230.7 MB in the end (delta: 26.2 MB). Free memory was 168.7 MB in the beginning and 185.0 MB in the end (delta: -16.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-24 15:07:23,444 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 143.7 MB. Free memory was 123.9 MB in the beginning and 123.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 296.73 ms. Allocated memory is still 143.7 MB. Free memory was 104.2 MB in the beginning and 94.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.73 ms. Allocated memory was 143.7 MB in the beginning and 204.5 MB in the end (delta: 60.8 MB). Free memory was 94.8 MB in the beginning and 182.7 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 299.68 ms. Allocated memory is still 204.5 MB. Free memory was 182.7 MB in the beginning and 169.3 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1241.76 ms. Allocated memory was 204.5 MB in the beginning and 230.7 MB in the end (delta: 26.2 MB). Free memory was 168.7 MB in the beginning and 185.0 MB in the end (delta: -16.3 MB). Peak memory consumption was 9.9 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