/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:53:05,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:53:05,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:53:05,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:53:05,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:53:05,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:53:05,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:53:05,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:53:05,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:53:05,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:53:05,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:53:05,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:53:05,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:53:05,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:53:05,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:53:05,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:53:05,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:53:05,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:53:05,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:53:05,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:53:05,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:53:05,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:53:05,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:53:05,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:53:05,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 19:53:05,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:53:05,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:53:05,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:53:05,827 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 19:53:05,871 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:53:05,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:53:05,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:53:05,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:53:05,874 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:53:05,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:53:05,875 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:53:05,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:53:05,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:53:05,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:53:05,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:53:05,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:53:05,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:53:05,877 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:53:05,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:53:05,877 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:53:05,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:53:05,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:53:05,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:53:05,878 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:53:05,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:53:05,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:53:05,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:53:05,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:53:05,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:53:05,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:53:05,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:53:05,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:53:05,880 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:53:05,880 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-08-21 19:53:06,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:53:06,204 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:53:06,209 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:53:06,211 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:53:06,211 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:53:06,212 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2020-08-21 19:53:06,288 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3ed89141/7561938b34684df681e7fb7e503a3efc/FLAG0fe0a4e50 [2020-08-21 19:53:06,740 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:53:06,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2020-08-21 19:53:06,747 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3ed89141/7561938b34684df681e7fb7e503a3efc/FLAG0fe0a4e50 [2020-08-21 19:53:07,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3ed89141/7561938b34684df681e7fb7e503a3efc [2020-08-21 19:53:07,128 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:53:07,130 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:53:07,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:53:07,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:53:07,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:53:07,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:53:07" (1/1) ... [2020-08-21 19:53:07,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@756d08d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:53:07, skipping insertion in model container [2020-08-21 19:53:07,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:53:07" (1/1) ... [2020-08-21 19:53:07,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:53:07,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:53:07,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:53:07,363 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:53:07,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:53:07,403 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:53:07,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:53:07 WrapperNode [2020-08-21 19:53:07,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:53:07,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:53:07,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:53:07,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:53:07,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:53:07" (1/1) ... [2020-08-21 19:53:07,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:53:07" (1/1) ... [2020-08-21 19:53:07,423 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:53:07" (1/1) ... [2020-08-21 19:53:07,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:53:07" (1/1) ... [2020-08-21 19:53:07,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:53:07" (1/1) ... [2020-08-21 19:53:07,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:53:07" (1/1) ... [2020-08-21 19:53:07,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:53:07" (1/1) ... [2020-08-21 19:53:07,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:53:07,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:53:07,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:53:07,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:53:07,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:53:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:53:07,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:53:07,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:53:07,575 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 19:53:07,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 19:53:07,575 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:53:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:53:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 19:53:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 19:53:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 19:53:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 19:53:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:53:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:53:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:53:07,785 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:53:07,785 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 19:53:07,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:53:07 BoogieIcfgContainer [2020-08-21 19:53:07,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:53:07,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:53:07,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:53:07,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:53:07,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:53:07" (1/3) ... [2020-08-21 19:53:07,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8783de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:53:07, skipping insertion in model container [2020-08-21 19:53:07,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:53:07" (2/3) ... [2020-08-21 19:53:07,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8783de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:53:07, skipping insertion in model container [2020-08-21 19:53:07,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:53:07" (3/3) ... [2020-08-21 19:53:07,799 INFO L109 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2020-08-21 19:53:07,814 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:53:07,822 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 19:53:07,844 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 19:53:07,873 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:53:07,874 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:53:07,874 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:53:07,874 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:53:07,874 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:53:07,874 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:53:07,875 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:53:07,875 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:53:07,896 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-08-21 19:53:07,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-21 19:53:07,902 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:53:07,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:53:07,904 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:53:07,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:53:07,912 INFO L82 PathProgramCache]: Analyzing trace with hash 826978896, now seen corresponding path program 1 times [2020-08-21 19:53:07,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:53:07,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941083374] [2020-08-21 19:53:07,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:53:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:53:08,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:53:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:53:08,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:53:08,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941083374] [2020-08-21 19:53:08,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:53:08,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 19:53:08,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221809430] [2020-08-21 19:53:08,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:53:08,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:53:08,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:53:08,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:53:08,158 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-08-21 19:53:08,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:53:08,252 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-08-21 19:53:08,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 19:53:08,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-08-21 19:53:08,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:53:08,263 INFO L225 Difference]: With dead ends: 44 [2020-08-21 19:53:08,263 INFO L226 Difference]: Without dead ends: 21 [2020-08-21 19:53:08,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:53:08,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-21 19:53:08,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-08-21 19:53:08,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-21 19:53:08,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-08-21 19:53:08,311 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 12 [2020-08-21 19:53:08,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:53:08,312 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-08-21 19:53:08,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:53:08,312 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-08-21 19:53:08,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 19:53:08,313 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:53:08,313 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:53:08,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:53:08,314 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:53:08,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:53:08,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1747164342, now seen corresponding path program 1 times [2020-08-21 19:53:08,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:53:08,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115370428] [2020-08-21 19:53:08,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:53:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:53:08,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:53:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:53:08,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-21 19:53:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:53:08,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:53:08,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115370428] [2020-08-21 19:53:08,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:53:08,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:53:08,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044593108] [2020-08-21 19:53:08,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:53:08,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:53:08,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:53:08,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:53:08,429 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 6 states. [2020-08-21 19:53:08,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:53:08,532 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-08-21 19:53:08,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 19:53:08,533 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-21 19:53:08,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:53:08,536 INFO L225 Difference]: With dead ends: 31 [2020-08-21 19:53:08,536 INFO L226 Difference]: Without dead ends: 29 [2020-08-21 19:53:08,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:53:08,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-21 19:53:08,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-08-21 19:53:08,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-21 19:53:08,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-08-21 19:53:08,552 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 17 [2020-08-21 19:53:08,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:53:08,552 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-08-21 19:53:08,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:53:08,552 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-08-21 19:53:08,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-21 19:53:08,555 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:53:08,555 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:53:08,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:53:08,556 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:53:08,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:53:08,556 INFO L82 PathProgramCache]: Analyzing trace with hash -94267114, now seen corresponding path program 1 times [2020-08-21 19:53:08,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:53:08,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596823720] [2020-08-21 19:53:08,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:53:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:53:08,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:53:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:53:08,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-21 19:53:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:53:08,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 19:53:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:53:08,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 19:53:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:53:08,681 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-21 19:53:08,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596823720] [2020-08-21 19:53:08,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:53:08,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 19:53:08,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882665146] [2020-08-21 19:53:08,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 19:53:08,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:53:08,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 19:53:08,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-21 19:53:08,684 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 7 states. [2020-08-21 19:53:08,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:53:08,835 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-08-21 19:53:08,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 19:53:08,838 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-08-21 19:53:08,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:53:08,839 INFO L225 Difference]: With dead ends: 39 [2020-08-21 19:53:08,839 INFO L226 Difference]: Without dead ends: 37 [2020-08-21 19:53:08,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:53:08,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-21 19:53:08,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-08-21 19:53:08,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-08-21 19:53:08,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-08-21 19:53:08,864 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 29 [2020-08-21 19:53:08,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:53:08,866 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-08-21 19:53:08,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 19:53:08,866 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-08-21 19:53:08,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-21 19:53:08,869 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:53:08,870 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:53:08,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 19:53:08,871 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:53:08,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:53:08,871 INFO L82 PathProgramCache]: Analyzing trace with hash -2069363338, now seen corresponding path program 2 times [2020-08-21 19:53:08,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:53:08,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102806449] [2020-08-21 19:53:08,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:53:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:53:09,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:53:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:53:09,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-21 19:53:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:53:09,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 19:53:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:53:09,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 19:53:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:53:09,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 19:53:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:53:09,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:53:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:53:09,050 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-08-21 19:53:09,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102806449] [2020-08-21 19:53:09,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:53:09,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-21 19:53:09,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212253781] [2020-08-21 19:53:09,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:53:09,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:53:09,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:53:09,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:53:09,053 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 6 states. [2020-08-21 19:53:09,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:53:09,111 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2020-08-21 19:53:09,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 19:53:09,112 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-08-21 19:53:09,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:53:09,112 INFO L225 Difference]: With dead ends: 36 [2020-08-21 19:53:09,112 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 19:53:09,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:53:09,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 19:53:09,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 19:53:09,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 19:53:09,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 19:53:09,114 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2020-08-21 19:53:09,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:53:09,115 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 19:53:09,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:53:09,115 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 19:53:09,115 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 19:53:09,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 19:53:09,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 19:53:09,169 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-21 19:53:09,170 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 19:53:09,170 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 19:53:09,170 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 19:53:09,170 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 19:53:09,170 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 19:53:09,170 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-21 19:53:09,171 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-21 19:53:09,171 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-21 19:53:09,171 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-21 19:53:09,171 INFO L271 CegarLoopResult]: At program point L33(lines 14 34) the Hoare annotation is: true [2020-08-21 19:53:09,171 INFO L268 CegarLoopResult]: For program point L31(lines 27 32) no Hoare annotation was computed. [2020-08-21 19:53:09,171 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0)) [2020-08-21 19:53:09,171 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 34) the Hoare annotation is: true [2020-08-21 19:53:09,172 INFO L264 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0)) [2020-08-21 19:53:09,172 INFO L264 CegarLoopResult]: At program point L27-2(lines 27 32) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0)) [2020-08-21 19:53:09,172 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 34) no Hoare annotation was computed. [2020-08-21 19:53:09,172 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-08-21 19:53:09,172 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-08-21 19:53:09,172 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 34) no Hoare annotation was computed. [2020-08-21 19:53:09,172 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-21 19:53:09,172 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-21 19:53:09,172 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-21 19:53:09,173 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-21 19:53:09,173 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-21 19:53:09,173 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-21 19:53:09,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 07:53:09 BoogieIcfgContainer [2020-08-21 19:53:09,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 19:53:09,192 INFO L168 Benchmark]: Toolchain (without parser) took 2061.17 ms. Allocated memory was 139.5 MB in the beginning and 235.4 MB in the end (delta: 95.9 MB). Free memory was 102.0 MB in the beginning and 192.2 MB in the end (delta: -90.2 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. [2020-08-21 19:53:09,193 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.3 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-21 19:53:09,193 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.47 ms. Allocated memory is still 139.5 MB. Free memory was 101.5 MB in the beginning and 91.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-08-21 19:53:09,194 INFO L168 Benchmark]: Boogie Preprocessor took 109.80 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 91.6 MB in the beginning and 181.7 MB in the end (delta: -90.1 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-08-21 19:53:09,195 INFO L168 Benchmark]: RCFGBuilder took 274.29 ms. Allocated memory is still 202.4 MB. Free memory was 181.7 MB in the beginning and 168.8 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-08-21 19:53:09,196 INFO L168 Benchmark]: TraceAbstraction took 1396.54 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 167.8 MB in the beginning and 192.2 MB in the end (delta: -24.4 MB). Peak memory consumption was 8.7 MB. Max. memory is 7.1 GB. [2020-08-21 19:53:09,200 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 139.5 MB. Free memory was 119.7 MB in the beginning and 119.3 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 275.47 ms. Allocated memory is still 139.5 MB. Free memory was 101.5 MB in the beginning and 91.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.80 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 91.6 MB in the beginning and 181.7 MB in the end (delta: -90.1 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 274.29 ms. Allocated memory is still 202.4 MB. Free memory was 181.7 MB in the beginning and 168.8 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1396.54 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 167.8 MB in the beginning and 192.2 MB in the end (delta: -24.4 MB). Peak memory consumption was 8.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (1 <= MAXPATHLEN && glob2_pathlim_off <= MAXPATHLEN) && 0 <= glob2_p_off - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 6, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 70 SDtfs, 30 SDslu, 207 SDs, 0 SdLazy, 118 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 16 PreInvPairs, 25 NumberOfFragments, 42 HoareAnnotationTreeSize, 16 FomulaSimplifications, 67 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 5151 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 76/83 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...