/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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 [2020-08-22 06:24:30,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:24:30,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:24:30,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:24:30,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:24:30,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:24:30,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:24:30,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:24:30,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:24:30,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:24:30,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:24:30,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:24:30,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:24:30,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:24:30,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:24:30,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:24:30,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:24:30,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:24:30,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:24:30,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:24:30,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:24:30,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:24:30,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:24:30,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:24:30,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:24:30,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:24:30,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:24:30,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:24:30,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:24:30,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-22 06:24:30,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:24:30,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:24:30,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:24:30,916 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 [2020-08-22 06:24:30,938 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:24:30,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:24:30,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:24:30,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:24:30,940 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:24:30,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:24:30,940 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:24:30,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:24:30,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:24:30,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:24:30,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:24:30,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:24:30,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:24:30,942 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:24:30,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:24:30,942 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:24:30,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:24:30,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:24:30,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:24:30,943 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:24:30,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:24:30,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:24:30,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:24:30,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:24:30,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:24:30,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:24:30,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:24:30,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:24:30,944 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:24:30,945 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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-08-22 06:24:31,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:24:31,256 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:24:31,259 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:24:31,261 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:24:31,261 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:24:31,262 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2020-08-22 06:24:31,331 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e228cca7/0237867033224033b49009a9ed0e5ea5/FLAG2f230524d [2020-08-22 06:24:31,768 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:24:31,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2020-08-22 06:24:31,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e228cca7/0237867033224033b49009a9ed0e5ea5/FLAG2f230524d [2020-08-22 06:24:32,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e228cca7/0237867033224033b49009a9ed0e5ea5 [2020-08-22 06:24:32,176 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:24:32,178 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:24:32,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:24:32,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:24:32,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:24:32,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:24:32" (1/1) ... [2020-08-22 06:24:32,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1190dd1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:32, skipping insertion in model container [2020-08-22 06:24:32,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:24:32" (1/1) ... [2020-08-22 06:24:32,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:24:32,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:24:32,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:24:32,409 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:24:32,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:24:32,442 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:24:32,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:32 WrapperNode [2020-08-22 06:24:32,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:24:32,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:24:32,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:24:32,444 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:24:32,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:32" (1/1) ... [2020-08-22 06:24:32,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:32" (1/1) ... [2020-08-22 06:24:32,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:32" (1/1) ... [2020-08-22 06:24:32,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:32" (1/1) ... [2020-08-22 06:24:32,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:32" (1/1) ... [2020-08-22 06:24:32,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:32" (1/1) ... [2020-08-22 06:24:32,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:32" (1/1) ... [2020-08-22 06:24:32,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:24:32,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:24:32,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:24:32,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:24:32,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:24:32,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:24:32,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:24:32,623 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 06:24:32,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 06:24:32,623 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:24:32,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:24:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 06:24:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 06:24:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 06:24:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 06:24:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:24:32,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:24:32,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:24:32,823 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:24:32,823 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 06:24:32,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:24:32 BoogieIcfgContainer [2020-08-22 06:24:32,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:24:32,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:24:32,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:24:32,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:24:32,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:24:32" (1/3) ... [2020-08-22 06:24:32,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@381cb2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:24:32, skipping insertion in model container [2020-08-22 06:24:32,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:32" (2/3) ... [2020-08-22 06:24:32,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@381cb2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:24:32, skipping insertion in model container [2020-08-22 06:24:32,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:24:32" (3/3) ... [2020-08-22 06:24:32,837 INFO L109 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2020-08-22 06:24:32,848 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:24:32,855 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:24:32,867 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:24:32,890 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:24:32,891 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:24:32,891 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:24:32,891 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:24:32,891 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:24:32,891 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:24:32,891 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:24:32,891 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:24:32,910 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-08-22 06:24:32,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-22 06:24:32,916 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:24:32,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:24:32,918 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:24:32,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:24:32,924 INFO L82 PathProgramCache]: Analyzing trace with hash 826978896, now seen corresponding path program 1 times [2020-08-22 06:24:32,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:24:32,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716111554] [2020-08-22 06:24:32,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:24:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:33,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:24:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:33,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:24:33,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716111554] [2020-08-22 06:24:33,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:24:33,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 06:24:33,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094489456] [2020-08-22 06:24:33,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 06:24:33,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:24:33,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 06:24:33,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:24:33,171 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-08-22 06:24:33,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:24:33,270 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-08-22 06:24:33,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 06:24:33,273 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-08-22 06:24:33,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:24:33,284 INFO L225 Difference]: With dead ends: 44 [2020-08-22 06:24:33,284 INFO L226 Difference]: Without dead ends: 21 [2020-08-22 06:24:33,289 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 [2020-08-22 06:24:33,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-22 06:24:33,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-08-22 06:24:33,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-22 06:24:33,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-08-22 06:24:33,335 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 12 [2020-08-22 06:24:33,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:24:33,336 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-08-22 06:24:33,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 06:24:33,337 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-08-22 06:24:33,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 06:24:33,338 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:24:33,338 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:24:33,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:24:33,339 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:24:33,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:24:33,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1747164342, now seen corresponding path program 1 times [2020-08-22 06:24:33,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:24:33,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674833868] [2020-08-22 06:24:33,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:24:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:33,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:24:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:33,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 06:24:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:33,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:24:33,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674833868] [2020-08-22 06:24:33,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:24:33,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 06:24:33,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905183276] [2020-08-22 06:24:33,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 06:24:33,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:24:33,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 06:24:33,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:24:33,457 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 6 states. [2020-08-22 06:24:33,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:24:33,549 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-08-22 06:24:33,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 06:24:33,550 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-22 06:24:33,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:24:33,553 INFO L225 Difference]: With dead ends: 31 [2020-08-22 06:24:33,553 INFO L226 Difference]: Without dead ends: 29 [2020-08-22 06:24:33,554 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 [2020-08-22 06:24:33,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-22 06:24:33,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-08-22 06:24:33,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-22 06:24:33,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-08-22 06:24:33,575 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 17 [2020-08-22 06:24:33,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:24:33,577 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-08-22 06:24:33,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 06:24:33,578 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-08-22 06:24:33,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-22 06:24:33,582 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:24:33,582 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:24:33,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:24:33,584 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:24:33,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:24:33,585 INFO L82 PathProgramCache]: Analyzing trace with hash -94267114, now seen corresponding path program 1 times [2020-08-22 06:24:33,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:24:33,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640373317] [2020-08-22 06:24:33,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:24:33,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:33,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:24:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:33,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 06:24:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:33,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:24:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:33,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:24:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:33,735 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-22 06:24:33,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640373317] [2020-08-22 06:24:33,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:24:33,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 06:24:33,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537826107] [2020-08-22 06:24:33,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 06:24:33,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:24:33,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 06:24:33,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-22 06:24:33,738 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 7 states. [2020-08-22 06:24:33,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:24:33,850 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-08-22 06:24:33,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 06:24:33,851 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-08-22 06:24:33,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:24:33,853 INFO L225 Difference]: With dead ends: 39 [2020-08-22 06:24:33,853 INFO L226 Difference]: Without dead ends: 37 [2020-08-22 06:24:33,854 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 [2020-08-22 06:24:33,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-22 06:24:33,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-08-22 06:24:33,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-08-22 06:24:33,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-08-22 06:24:33,864 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 29 [2020-08-22 06:24:33,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:24:33,865 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-08-22 06:24:33,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 06:24:33,865 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-08-22 06:24:33,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-22 06:24:33,867 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:24:33,867 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:24:33,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 06:24:33,868 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:24:33,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:24:33,868 INFO L82 PathProgramCache]: Analyzing trace with hash -2069363338, now seen corresponding path program 2 times [2020-08-22 06:24:33,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:24:33,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549911729] [2020-08-22 06:24:33,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:24:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:33,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:24:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:33,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 06:24:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:33,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:24:33,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:33,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:24:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:33,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 06:24:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:33,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 06:24:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:34,005 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-08-22 06:24:34,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549911729] [2020-08-22 06:24:34,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:24:34,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-22 06:24:34,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917288098] [2020-08-22 06:24:34,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 06:24:34,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:24:34,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 06:24:34,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:24:34,008 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 6 states. [2020-08-22 06:24:34,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:24:34,081 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2020-08-22 06:24:34,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 06:24:34,082 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-08-22 06:24:34,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:24:34,082 INFO L225 Difference]: With dead ends: 36 [2020-08-22 06:24:34,083 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 06:24:34,084 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 [2020-08-22 06:24:34,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 06:24:34,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 06:24:34,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 06:24:34,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 06:24:34,085 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2020-08-22 06:24:34,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:24:34,085 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 06:24:34,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 06:24:34,085 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 06:24:34,085 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 06:24:34,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 06:24:34,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 06:24:34,149 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 06:24:34,150 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 06:24:34,150 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 06:24:34,150 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 06:24:34,150 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 06:24:34,150 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 06:24:34,150 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-22 06:24:34,150 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-22 06:24:34,151 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-22 06:24:34,151 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-22 06:24:34,151 INFO L271 CegarLoopResult]: At program point L33(lines 14 34) the Hoare annotation is: true [2020-08-22 06:24:34,151 INFO L268 CegarLoopResult]: For program point L31(lines 27 32) no Hoare annotation was computed. [2020-08-22 06:24:34,151 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)) [2020-08-22 06:24:34,151 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 34) the Hoare annotation is: true [2020-08-22 06:24:34,152 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)) [2020-08-22 06:24:34,152 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)) [2020-08-22 06:24:34,152 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 34) no Hoare annotation was computed. [2020-08-22 06:24:34,152 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-08-22 06:24:34,152 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-08-22 06:24:34,152 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 34) no Hoare annotation was computed. [2020-08-22 06:24:34,153 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-22 06:24:34,153 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-22 06:24:34,153 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-22 06:24:34,153 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-22 06:24:34,153 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-22 06:24:34,153 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-22 06:24:34,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:24:34 BoogieIcfgContainer [2020-08-22 06:24:34,172 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 06:24:34,175 INFO L168 Benchmark]: Toolchain (without parser) took 1996.18 ms. Allocated memory was 140.0 MB in the beginning and 236.5 MB in the end (delta: 96.5 MB). Free memory was 103.2 MB in the beginning and 190.8 MB in the end (delta: -87.6 MB). Peak memory consumption was 8.9 MB. Max. memory is 7.1 GB. [2020-08-22 06:24:34,175 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 06:24:34,176 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.78 ms. Allocated memory is still 140.0 MB. Free memory was 103.0 MB in the beginning and 93.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-08-22 06:24:34,177 INFO L168 Benchmark]: Boogie Preprocessor took 115.67 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 93.4 MB in the beginning and 182.0 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-22 06:24:34,178 INFO L168 Benchmark]: RCFGBuilder took 267.40 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 168.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-08-22 06:24:34,179 INFO L168 Benchmark]: TraceAbstraction took 1343.09 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 167.8 MB in the beginning and 190.8 MB in the end (delta: -23.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-08-22 06:24:34,184 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 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 264.78 ms. Allocated memory is still 140.0 MB. Free memory was 103.0 MB in the beginning and 93.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.67 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 93.4 MB in the beginning and 182.0 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 267.40 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 168.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1343.09 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 167.8 MB in the beginning and 190.8 MB in the end (delta: -23.0 MB). Peak memory consumption was 10.5 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: 1.1s, 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, 0.1s 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, 0.3s 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...