/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/loop-invgen/NetBSD_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:07:54,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:07:54,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:07:54,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:07:54,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:07:54,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:07:54,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:07:54,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:07:54,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:07:54,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:07:54,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:07:54,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:07:54,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:07:54,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:07:54,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:07:54,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:07:54,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:07:54,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:07:54,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:07:54,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:07:54,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:07:54,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:07:54,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:07:54,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:07:54,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:07:54,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:07:54,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:07:54,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:07:54,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:07:54,935 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-19 06:07:54,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:07:54,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:07:54,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:07:54,942 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 06:07:54,965 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:07:54,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:07:54,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:07:54,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:07:54,967 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:07:54,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:07:54,967 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:07:54,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:07:54,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:07:54,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:07:54,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:07:54,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:07:54,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:07:54,969 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:07:54,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:07:54,969 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:07:54,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:07:54,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:07:54,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:07:54,970 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:07:54,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:07:54,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:07:54,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:07:54,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:07:54,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:07:54,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:07:54,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:07:54,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:07:54,972 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:07:54,972 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 06:07:55,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:07:55,295 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:07:55,298 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:07:55,300 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:07:55,300 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:07:55,301 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2020-08-19 06:07:55,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5fa70317/4f1f3fd4692949a8b0be4302ddc8b9bc/FLAG457f0fbd3 [2020-08-19 06:07:55,789 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:07:55,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2020-08-19 06:07:55,797 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5fa70317/4f1f3fd4692949a8b0be4302ddc8b9bc/FLAG457f0fbd3 [2020-08-19 06:07:56,135 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5fa70317/4f1f3fd4692949a8b0be4302ddc8b9bc [2020-08-19 06:07:56,146 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:07:56,148 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:07:56,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:07:56,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:07:56,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:07:56,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:07:56" (1/1) ... [2020-08-19 06:07:56,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@391177e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:56, skipping insertion in model container [2020-08-19 06:07:56,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:07:56" (1/1) ... [2020-08-19 06:07:56,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:07:56,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:07:56,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:07:56,360 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:07:56,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:07:56,389 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:07:56,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:56 WrapperNode [2020-08-19 06:07:56,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:07:56,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:07:56,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:07:56,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:07:56,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:56" (1/1) ... [2020-08-19 06:07:56,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:56" (1/1) ... [2020-08-19 06:07:56,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:56" (1/1) ... [2020-08-19 06:07:56,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:56" (1/1) ... [2020-08-19 06:07:56,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:56" (1/1) ... [2020-08-19 06:07:56,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:56" (1/1) ... [2020-08-19 06:07:56,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:56" (1/1) ... [2020-08-19 06:07:56,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:07:56,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:07:56,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:07:56,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:07:56,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:56" (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 06:07:56,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:07:56,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:07:56,566 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 06:07:56,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 06:07:56,566 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:07:56,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:07:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 06:07:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 06:07:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 06:07:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:07:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:07:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:07:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:07:56,767 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:07:56,767 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 06:07:56,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:07:56 BoogieIcfgContainer [2020-08-19 06:07:56,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:07:56,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:07:56,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:07:56,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:07:56,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:07:56" (1/3) ... [2020-08-19 06:07:56,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df47984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:07:56, skipping insertion in model container [2020-08-19 06:07:56,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:56" (2/3) ... [2020-08-19 06:07:56,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df47984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:07:56, skipping insertion in model container [2020-08-19 06:07:56,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:07:56" (3/3) ... [2020-08-19 06:07:56,780 INFO L109 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2020-08-19 06:07:56,792 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:07:56,800 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:07:56,832 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:07:56,898 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:07:56,898 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:07:56,898 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:07:56,898 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:07:56,898 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:07:56,899 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:07:56,899 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:07:56,899 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:07:56,929 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-08-19 06:07:56,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-19 06:07:56,935 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:07:56,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:07:56,936 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:07:56,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:07:56,941 INFO L82 PathProgramCache]: Analyzing trace with hash 826978896, now seen corresponding path program 1 times [2020-08-19 06:07:56,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:07:56,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224388744] [2020-08-19 06:07:56,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:07:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:57,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:07:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:57,169 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 06:07:57,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224388744] [2020-08-19 06:07:57,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:07:57,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:07:57,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132419853] [2020-08-19 06:07:57,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:07:57,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:07:57,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:07:57,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:07:57,207 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-08-19 06:07:57,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:07:57,332 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-08-19 06:07:57,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 06:07:57,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-08-19 06:07:57,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:07:57,347 INFO L225 Difference]: With dead ends: 44 [2020-08-19 06:07:57,347 INFO L226 Difference]: Without dead ends: 21 [2020-08-19 06:07:57,355 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 [2020-08-19 06:07:57,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-19 06:07:57,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-08-19 06:07:57,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-19 06:07:57,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-08-19 06:07:57,402 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 12 [2020-08-19 06:07:57,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:07:57,403 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-08-19 06:07:57,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:07:57,404 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-08-19 06:07:57,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 06:07:57,405 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:07:57,405 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:07:57,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:07:57,406 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:07:57,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:07:57,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1747164342, now seen corresponding path program 1 times [2020-08-19 06:07:57,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:07:57,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697031076] [2020-08-19 06:07:57,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:07:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:57,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:07:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:57,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-19 06:07:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:57,517 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 06:07:57,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697031076] [2020-08-19 06:07:57,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:07:57,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 06:07:57,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023407869] [2020-08-19 06:07:57,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 06:07:57,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:07:57,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 06:07:57,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:07:57,521 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 6 states. [2020-08-19 06:07:57,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:07:57,618 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-08-19 06:07:57,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 06:07:57,619 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-19 06:07:57,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:07:57,621 INFO L225 Difference]: With dead ends: 31 [2020-08-19 06:07:57,621 INFO L226 Difference]: Without dead ends: 29 [2020-08-19 06:07:57,624 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 [2020-08-19 06:07:57,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-19 06:07:57,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-08-19 06:07:57,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-19 06:07:57,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-08-19 06:07:57,650 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 17 [2020-08-19 06:07:57,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:07:57,650 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-08-19 06:07:57,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 06:07:57,652 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-08-19 06:07:57,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-19 06:07:57,655 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:07:57,655 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:07:57,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:07:57,657 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:07:57,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:07:57,657 INFO L82 PathProgramCache]: Analyzing trace with hash -94267114, now seen corresponding path program 1 times [2020-08-19 06:07:57,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:07:57,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369717368] [2020-08-19 06:07:57,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:07:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:57,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:07:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:57,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-19 06:07:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:57,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 06:07:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:57,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 06:07:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:57,829 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-19 06:07:57,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369717368] [2020-08-19 06:07:57,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:07:57,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 06:07:57,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240185904] [2020-08-19 06:07:57,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 06:07:57,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:07:57,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 06:07:57,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-19 06:07:57,832 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 7 states. [2020-08-19 06:07:57,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:07:57,940 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-08-19 06:07:57,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 06:07:57,941 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-08-19 06:07:57,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:07:57,943 INFO L225 Difference]: With dead ends: 39 [2020-08-19 06:07:57,943 INFO L226 Difference]: Without dead ends: 37 [2020-08-19 06:07:57,944 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 [2020-08-19 06:07:57,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-19 06:07:57,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-08-19 06:07:57,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-08-19 06:07:57,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-08-19 06:07:57,954 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 29 [2020-08-19 06:07:57,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:07:57,955 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-08-19 06:07:57,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 06:07:57,955 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-08-19 06:07:57,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-19 06:07:57,957 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:07:57,957 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:07:57,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:07:57,958 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:07:57,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:07:57,958 INFO L82 PathProgramCache]: Analyzing trace with hash -2069363338, now seen corresponding path program 2 times [2020-08-19 06:07:57,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:07:57,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922727687] [2020-08-19 06:07:57,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:07:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:58,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:07:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:58,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-19 06:07:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:58,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 06:07:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:58,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 06:07:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:58,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 06:07:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:58,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:07:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:58,086 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-08-19 06:07:58,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922727687] [2020-08-19 06:07:58,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:07:58,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 06:07:58,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137866551] [2020-08-19 06:07:58,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 06:07:58,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:07:58,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 06:07:58,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:07:58,089 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 6 states. [2020-08-19 06:07:58,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:07:58,162 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2020-08-19 06:07:58,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 06:07:58,162 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-08-19 06:07:58,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:07:58,163 INFO L225 Difference]: With dead ends: 36 [2020-08-19 06:07:58,163 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 06:07:58,164 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 [2020-08-19 06:07:58,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 06:07:58,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 06:07:58,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 06:07:58,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 06:07:58,165 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2020-08-19 06:07:58,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:07:58,166 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 06:07:58,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 06:07:58,166 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 06:07:58,166 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 06:07:58,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:07:58,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 06:07:58,229 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-19 06:07:58,229 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 06:07:58,229 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 06:07:58,229 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 06:07:58,229 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 06:07:58,230 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 06:07:58,230 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-19 06:07:58,230 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-19 06:07:58,230 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-19 06:07:58,230 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-19 06:07:58,230 INFO L271 CegarLoopResult]: At program point L33(lines 14 34) the Hoare annotation is: true [2020-08-19 06:07:58,230 INFO L268 CegarLoopResult]: For program point L31(lines 27 32) no Hoare annotation was computed. [2020-08-19 06:07:58,231 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)) [2020-08-19 06:07:58,231 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 34) the Hoare annotation is: true [2020-08-19 06:07:58,231 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)) [2020-08-19 06:07:58,231 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)) [2020-08-19 06:07:58,231 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 34) no Hoare annotation was computed. [2020-08-19 06:07:58,232 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-08-19 06:07:58,232 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-08-19 06:07:58,232 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 34) no Hoare annotation was computed. [2020-08-19 06:07:58,232 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-19 06:07:58,232 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-19 06:07:58,232 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-19 06:07:58,232 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-19 06:07:58,232 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-19 06:07:58,233 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-19 06:07:58,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:07:58 BoogieIcfgContainer [2020-08-19 06:07:58,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:07:58,254 INFO L168 Benchmark]: Toolchain (without parser) took 2106.21 ms. Allocated memory was 137.4 MB in the beginning and 229.6 MB in the end (delta: 92.3 MB). Free memory was 101.0 MB in the beginning and 189.9 MB in the end (delta: -88.9 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-08-19 06:07:58,256 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 06:07:58,256 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.75 ms. Allocated memory is still 137.4 MB. Free memory was 100.8 MB in the beginning and 91.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-08-19 06:07:58,257 INFO L168 Benchmark]: Boogie Preprocessor took 28.81 ms. Allocated memory is still 137.4 MB. Free memory was 91.3 MB in the beginning and 89.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-08-19 06:07:58,259 INFO L168 Benchmark]: RCFGBuilder took 351.74 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 89.9 MB in the beginning and 167.0 MB in the end (delta: -77.2 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-19 06:07:58,260 INFO L168 Benchmark]: TraceAbstraction took 1478.74 ms. Allocated memory was 200.8 MB in the beginning and 229.6 MB in the end (delta: 28.8 MB). Free memory was 167.0 MB in the beginning and 189.9 MB in the end (delta: -22.8 MB). Peak memory consumption was 6.0 MB. Max. memory is 7.1 GB. [2020-08-19 06:07:58,265 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 241.75 ms. Allocated memory is still 137.4 MB. Free memory was 100.8 MB in the beginning and 91.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.81 ms. Allocated memory is still 137.4 MB. Free memory was 91.3 MB in the beginning and 89.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 351.74 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 89.9 MB in the beginning and 167.0 MB in the end (delta: -77.2 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1478.74 ms. Allocated memory was 200.8 MB in the beginning and 229.6 MB in the end (delta: 28.8 MB). Free memory was 167.0 MB in the beginning and 189.9 MB in the end (delta: -22.8 MB). Peak memory consumption was 6.0 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...