/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=SHALLOWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/terminator_02-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:25:30,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:25:30,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:25:30,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-18 20:25:30,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:25:30,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:25:30,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:25:30,744 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 [2020-08-18 20:25:30,770 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:25:30,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:25:30,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:25:30,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:25:30,772 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:25:30,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:25:30,773 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:25:30,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:25:30,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:25:30,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:25:30,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:25:30,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:25:30,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:25:30,774 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:25:30,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:25:30,774 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:25:30,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:25:30,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:25:30,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:25:30,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:25:30,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:25:30,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:25:30,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:25:30,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:25:30,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:25:30,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:25:30,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:25:30,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:25:30,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:25:30,777 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=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:25:31,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:25:31,126 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:25:31,133 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:25:31,136 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:25:31,137 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:25:31,139 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02-1.c [2020-08-18 20:25:31,212 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5697bf762/3edd248ad84b4e48bbe40ca29017c41b/FLAG6deaa17ae [2020-08-18 20:25:31,633 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:25:31,635 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/terminator_02-1.c [2020-08-18 20:25:31,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5697bf762/3edd248ad84b4e48bbe40ca29017c41b/FLAG6deaa17ae [2020-08-18 20:25:32,016 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5697bf762/3edd248ad84b4e48bbe40ca29017c41b [2020-08-18 20:25:32,026 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:25:32,028 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:25:32,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:25:32,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:25:32,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:25:32,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:25:32" (1/1) ... [2020-08-18 20:25:32,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d96e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:32, skipping insertion in model container [2020-08-18 20:25:32,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:25:32" (1/1) ... [2020-08-18 20:25:32,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:25:32,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:25:32,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:25:32,324 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:25:32,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:25:32,364 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:25:32,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:32 WrapperNode [2020-08-18 20:25:32,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:25:32,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:25:32,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:25:32,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:25:32,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:32" (1/1) ... [2020-08-18 20:25:32,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:32" (1/1) ... [2020-08-18 20:25:32,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:32" (1/1) ... [2020-08-18 20:25:32,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:32" (1/1) ... [2020-08-18 20:25:32,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:32" (1/1) ... [2020-08-18 20:25:32,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:32" (1/1) ... [2020-08-18 20:25:32,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:32" (1/1) ... [2020-08-18 20:25:32,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:25:32,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:25:32,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:25:32,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:25:32,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:32" (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 [2020-08-18 20:25:32,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:25:32,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:25:32,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 20:25:32,566 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:25:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:25:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 20:25:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:25:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 20:25:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:25:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:25:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:25:32,750 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:25:32,750 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 20:25:32,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:25:32 BoogieIcfgContainer [2020-08-18 20:25:32,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:25:32,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:25:32,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:25:32,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:25:32,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:25:32" (1/3) ... [2020-08-18 20:25:32,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1dad64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:25:32, skipping insertion in model container [2020-08-18 20:25:32,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:32" (2/3) ... [2020-08-18 20:25:32,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1dad64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:25:32, skipping insertion in model container [2020-08-18 20:25:32,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:25:32" (3/3) ... [2020-08-18 20:25:32,763 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_02-1.c [2020-08-18 20:25:32,775 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:25:32,782 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:25:32,798 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:25:32,837 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:25:32,837 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:25:32,838 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:25:32,838 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:25:32,838 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:25:32,838 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:25:32,838 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:25:32,838 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:25:32,872 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-08-18 20:25:32,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-18 20:25:32,880 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:25:32,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:25:32,882 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:25:32,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:25:32,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1712329921, now seen corresponding path program 1 times [2020-08-18 20:25:32,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:25:32,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892635164] [2020-08-18 20:25:32,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:25:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:25:33,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:25:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:25:33,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:25:33,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892635164] [2020-08-18 20:25:33,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:25:33,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-18 20:25:33,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682818148] [2020-08-18 20:25:33,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-18 20:25:33,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:25:33,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-18 20:25:33,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-18 20:25:33,059 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-08-18 20:25:33,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:25:33,082 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-08-18 20:25:33,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-18 20:25:33,084 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-08-18 20:25:33,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:25:33,105 INFO L225 Difference]: With dead ends: 31 [2020-08-18 20:25:33,105 INFO L226 Difference]: Without dead ends: 12 [2020-08-18 20:25:33,111 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 [2020-08-18 20:25:33,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-08-18 20:25:33,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-08-18 20:25:33,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-08-18 20:25:33,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-08-18 20:25:33,153 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2020-08-18 20:25:33,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:25:33,154 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-08-18 20:25:33,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-18 20:25:33,155 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-08-18 20:25:33,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-18 20:25:33,155 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:25:33,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:25:33,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:25:33,156 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:25:33,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:25:33,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1703094711, now seen corresponding path program 1 times [2020-08-18 20:25:33,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:25:33,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217118790] [2020-08-18 20:25:33,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:25:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 20:25:33,177 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 20:25:33,177 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 20:25:33,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:25:33,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:25:33 BoogieIcfgContainer [2020-08-18 20:25:33,196 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:25:33,198 INFO L168 Benchmark]: Toolchain (without parser) took 1169.95 ms. Allocated memory was 136.3 MB in the beginning and 199.2 MB in the end (delta: 62.9 MB). Free memory was 99.2 MB in the beginning and 143.7 MB in the end (delta: -44.5 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2020-08-18 20:25:33,199 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 136.3 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 20:25:33,200 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.08 ms. Allocated memory is still 136.3 MB. Free memory was 99.0 MB in the beginning and 89.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-08-18 20:25:33,202 INFO L168 Benchmark]: Boogie Preprocessor took 131.34 ms. Allocated memory was 136.3 MB in the beginning and 199.2 MB in the end (delta: 62.9 MB). Free memory was 89.6 MB in the beginning and 177.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-18 20:25:33,203 INFO L168 Benchmark]: RCFGBuilder took 256.20 ms. Allocated memory is still 199.2 MB. Free memory was 177.8 MB in the beginning and 164.5 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-08-18 20:25:33,204 INFO L168 Benchmark]: TraceAbstraction took 440.34 ms. Allocated memory is still 199.2 MB. Free memory was 164.5 MB in the beginning and 143.7 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-08-18 20:25:33,208 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 136.3 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 337.08 ms. Allocated memory is still 136.3 MB. Free memory was 99.0 MB in the beginning and 89.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.34 ms. Allocated memory was 136.3 MB in the beginning and 199.2 MB in the end (delta: 62.9 MB). Free memory was 89.6 MB in the beginning and 177.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 256.20 ms. Allocated memory is still 199.2 MB. Free memory was 177.8 MB in the beginning and 164.5 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 440.34 ms. Allocated memory is still 199.2 MB. Free memory was 164.5 MB in the beginning and 143.7 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int x=__VERIFIER_nondet_int(); [L15] int y=__VERIFIER_nondet_int(); [L16] int z=__VERIFIER_nondet_int(); [L18] COND FALSE !(x<100 && 100