/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/for_bounded_loop1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:07:22,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:07:22,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:07:22,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:07:22,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:07:22,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:07:22,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:07:22,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:07:22,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:07:22,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:07:22,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:07:22,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:07:22,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:07:22,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:07:22,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:07:22,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:07:22,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:07:22,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:07:22,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:07:22,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:07:22,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:07:22,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:07:22,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:07:22,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:07:22,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 06:07:22,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:07:22,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:07:22,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:07:22,187 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 [2020-08-19 06:07:22,210 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:07:22,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:07:22,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:07:22,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:07:22,212 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:07:22,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:07:22,213 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:07:22,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:07:22,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:07:22,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:07:22,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:07:22,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:07:22,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:07:22,214 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:07:22,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:07:22,215 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:07:22,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:07:22,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:07:22,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:07:22,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:07:22,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:07:22,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:07:22,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:07:22,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:07:22,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:07:22,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:07:22,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:07:22,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:07:22,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:07:22,217 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=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 06:07:22,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:07:22,549 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:07:22,555 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:07:22,556 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:07:22,557 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:07:22,558 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/for_bounded_loop1.c [2020-08-19 06:07:22,619 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30063b3fd/ede9d815837541e79bda86190725c671/FLAGc2758207d [2020-08-19 06:07:23,079 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:07:23,079 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/for_bounded_loop1.c [2020-08-19 06:07:23,086 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30063b3fd/ede9d815837541e79bda86190725c671/FLAGc2758207d [2020-08-19 06:07:23,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30063b3fd/ede9d815837541e79bda86190725c671 [2020-08-19 06:07:23,452 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:07:23,454 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:07:23,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:07:23,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:07:23,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:07:23,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:07:23" (1/1) ... [2020-08-19 06:07:23,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7845d484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:23, skipping insertion in model container [2020-08-19 06:07:23,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:07:23" (1/1) ... [2020-08-19 06:07:23,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:07:23,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:07:23,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:07:23,673 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:07:23,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:07:23,704 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:07:23,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:23 WrapperNode [2020-08-19 06:07:23,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:07:23,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:07:23,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:07:23,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:07:23,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:23" (1/1) ... [2020-08-19 06:07:23,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:23" (1/1) ... [2020-08-19 06:07:23,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:23" (1/1) ... [2020-08-19 06:07:23,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:23" (1/1) ... [2020-08-19 06:07:23,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:23" (1/1) ... [2020-08-19 06:07:23,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:23" (1/1) ... [2020-08-19 06:07:23,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:23" (1/1) ... [2020-08-19 06:07:23,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:07:23,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:07:23,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:07:23,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:07:23,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:23" (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 [2020-08-19 06:07:23,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:07:23,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:07:23,875 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 06:07:23,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 06:07:23,875 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:07:23,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:07:23,876 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 06:07:23,876 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 06:07:23,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 06:07:23,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:07:23,876 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:07:23,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:07:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:07:24,072 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:07:24,072 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 06:07:24,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:07:24 BoogieIcfgContainer [2020-08-19 06:07:24,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:07:24,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:07:24,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:07:24,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:07:24,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:07:23" (1/3) ... [2020-08-19 06:07:24,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46656d78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:07:24, skipping insertion in model container [2020-08-19 06:07:24,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:23" (2/3) ... [2020-08-19 06:07:24,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46656d78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:07:24, skipping insertion in model container [2020-08-19 06:07:24,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:07:24" (3/3) ... [2020-08-19 06:07:24,085 INFO L109 eAbstractionObserver]: Analyzing ICFG for_bounded_loop1.c [2020-08-19 06:07:24,097 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:07:24,105 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:07:24,127 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:07:24,185 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:07:24,185 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:07:24,185 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:07:24,185 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:07:24,186 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:07:24,186 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:07:24,186 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:07:24,186 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:07:24,214 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-08-19 06:07:24,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-19 06:07:24,221 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:07:24,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:07:24,226 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:07:24,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:07:24,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1474053726, now seen corresponding path program 1 times [2020-08-19 06:07:24,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:07:24,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223781283] [2020-08-19 06:07:24,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:07:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:24,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:07:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:24,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:07:24,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223781283] [2020-08-19 06:07:24,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:07:24,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-19 06:07:24,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504264521] [2020-08-19 06:07:24,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-19 06:07:24,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:07:24,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-19 06:07:24,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-19 06:07:24,387 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-08-19 06:07:24,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:07:24,413 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2020-08-19 06:07:24,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-19 06:07:24,415 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-08-19 06:07:24,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:07:24,426 INFO L225 Difference]: With dead ends: 40 [2020-08-19 06:07:24,426 INFO L226 Difference]: Without dead ends: 19 [2020-08-19 06:07:24,430 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 [2020-08-19 06:07:24,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-08-19 06:07:24,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-08-19 06:07:24,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-19 06:07:24,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-08-19 06:07:24,475 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2020-08-19 06:07:24,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:07:24,479 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-08-19 06:07:24,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-19 06:07:24,479 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-08-19 06:07:24,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-19 06:07:24,480 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:07:24,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:07:24,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:07:24,481 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:07:24,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:07:24,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1462047953, now seen corresponding path program 1 times [2020-08-19 06:07:24,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:07:24,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424405333] [2020-08-19 06:07:24,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:07:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:24,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:07:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:24,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:07:24,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424405333] [2020-08-19 06:07:24,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:07:24,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:07:24,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760023722] [2020-08-19 06:07:24,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:07:24,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:07:24,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:07:24,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:07:24,539 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2020-08-19 06:07:24,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:07:24,575 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2020-08-19 06:07:24,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:07:24,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-08-19 06:07:24,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:07:24,577 INFO L225 Difference]: With dead ends: 27 [2020-08-19 06:07:24,577 INFO L226 Difference]: Without dead ends: 20 [2020-08-19 06:07:24,578 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 [2020-08-19 06:07:24,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-08-19 06:07:24,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-08-19 06:07:24,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-08-19 06:07:24,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-08-19 06:07:24,586 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2020-08-19 06:07:24,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:07:24,586 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-08-19 06:07:24,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:07:24,587 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-08-19 06:07:24,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-19 06:07:24,588 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:07:24,588 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:07:24,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:07:24,588 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:07:24,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:07:24,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1463775831, now seen corresponding path program 1 times [2020-08-19 06:07:24,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:07:24,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062003195] [2020-08-19 06:07:24,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:07:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:24,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:07:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:24,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:07:24,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062003195] [2020-08-19 06:07:24,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:07:24,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 06:07:24,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990850178] [2020-08-19 06:07:24,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 06:07:24,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:07:24,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 06:07:24,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:07:24,729 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 6 states. [2020-08-19 06:07:24,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:07:24,835 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2020-08-19 06:07:24,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 06:07:24,836 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-08-19 06:07:24,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:07:24,837 INFO L225 Difference]: With dead ends: 28 [2020-08-19 06:07:24,838 INFO L226 Difference]: Without dead ends: 26 [2020-08-19 06:07:24,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:07:24,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-19 06:07:24,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-08-19 06:07:24,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-19 06:07:24,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-08-19 06:07:24,849 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 11 [2020-08-19 06:07:24,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:07:24,850 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-08-19 06:07:24,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 06:07:24,850 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-08-19 06:07:24,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 06:07:24,851 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:07:24,851 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:07:24,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:07:24,852 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:07:24,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:07:24,852 INFO L82 PathProgramCache]: Analyzing trace with hash -541842987, now seen corresponding path program 1 times [2020-08-19 06:07:24,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:07:24,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899039354] [2020-08-19 06:07:24,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:07:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:24,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:07:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:24,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 06:07:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:24,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:07:24,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899039354] [2020-08-19 06:07:24,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:07:24,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 06:07:24,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385149578] [2020-08-19 06:07:24,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 06:07:24,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:07:24,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 06:07:24,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-19 06:07:24,982 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 7 states. [2020-08-19 06:07:25,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:07:25,093 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-08-19 06:07:25,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 06:07:25,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-08-19 06:07:25,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:07:25,095 INFO L225 Difference]: With dead ends: 32 [2020-08-19 06:07:25,096 INFO L226 Difference]: Without dead ends: 28 [2020-08-19 06:07:25,096 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 [2020-08-19 06:07:25,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-19 06:07:25,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-08-19 06:07:25,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-19 06:07:25,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-08-19 06:07:25,105 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 18 [2020-08-19 06:07:25,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:07:25,106 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-08-19 06:07:25,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 06:07:25,106 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-08-19 06:07:25,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 06:07:25,107 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:07:25,107 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] [2020-08-19 06:07:25,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:07:25,108 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:07:25,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:07:25,109 INFO L82 PathProgramCache]: Analyzing trace with hash 814692392, now seen corresponding path program 1 times [2020-08-19 06:07:25,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:07:25,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114710976] [2020-08-19 06:07:25,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:07:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 06:07:25,129 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 06:07:25,129 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 06:07:25,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:07:25,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:07:25 BoogieIcfgContainer [2020-08-19 06:07:25,152 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:07:25,155 INFO L168 Benchmark]: Toolchain (without parser) took 1700.14 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 102.1 MB in the beginning and 98.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 66.3 MB. Max. memory is 7.1 GB. [2020-08-19 06:07:25,156 INFO L168 Benchmark]: CDTParser took 0.22 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). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 06:07:25,157 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.12 ms. Allocated memory is still 138.9 MB. Free memory was 101.9 MB in the beginning and 92.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-19 06:07:25,158 INFO L168 Benchmark]: Boogie Preprocessor took 106.80 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 92.4 MB in the beginning and 180.4 MB in the end (delta: -88.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-19 06:07:25,159 INFO L168 Benchmark]: RCFGBuilder took 264.65 ms. Allocated memory is still 201.3 MB. Free memory was 179.7 MB in the beginning and 166.6 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-08-19 06:07:25,160 INFO L168 Benchmark]: TraceAbstraction took 1073.36 ms. Allocated memory is still 201.3 MB. Free memory was 165.9 MB in the beginning and 98.2 MB in the end (delta: 67.8 MB). Peak memory consumption was 67.8 MB. Max. memory is 7.1 GB. [2020-08-19 06:07:25,164 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 249.12 ms. Allocated memory is still 138.9 MB. Free memory was 101.9 MB in the beginning and 92.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.80 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 92.4 MB in the beginning and 180.4 MB in the end (delta: -88.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 264.65 ms. Allocated memory is still 201.3 MB. Free memory was 179.7 MB in the beginning and 166.6 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1073.36 ms. Allocated memory is still 201.3 MB. Free memory was 165.9 MB in the beginning and 98.2 MB in the end (delta: 67.8 MB). Peak memory consumption was 67.8 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