/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-10 15:28:32,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 15:28:32,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 15:28:32,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 15:28:32,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 15:28:32,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 15:28:32,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 15:28:32,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 15:28:32,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 15:28:32,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 15:28:32,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 15:28:32,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 15:28:32,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 15:28:32,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 15:28:32,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 15:28:32,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 15:28:32,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 15:28:32,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 15:28:32,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 15:28:32,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 15:28:32,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 15:28:32,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 15:28:32,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 15:28:32,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 15:28:32,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-10 15:28:32,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 15:28:32,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 15:28:32,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 15:28:32,924 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-10 15:28:32,949 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 15:28:32,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 15:28:32,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-10 15:28:32,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-10 15:28:32,951 INFO L138 SettingsManager]: * Use SBE=true [2020-07-10 15:28:32,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 15:28:32,951 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 15:28:32,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 15:28:32,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 15:28:32,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 15:28:32,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 15:28:32,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 15:28:32,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 15:28:32,953 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 15:28:32,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 15:28:32,953 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 15:28:32,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 15:28:32,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 15:28:32,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-10 15:28:32,954 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 15:28:32,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 15:28:32,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 15:28:32,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 15:28:32,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-10 15:28:32,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-10 15:28:32,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-10 15:28:32,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-10 15:28:32,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 15:28:32,956 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-10 15:28:32,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-10 15:28:33,308 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 15:28:33,322 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 15:28:33,326 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 15:28:33,328 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 15:28:33,328 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 15:28:33,329 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2020-07-10 15:28:33,400 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c6ecbcc/5bf8b31fe32d46e0a3a3149200cbd133/FLAG0da978b54 [2020-07-10 15:28:33,939 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 15:28:33,940 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2020-07-10 15:28:33,947 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c6ecbcc/5bf8b31fe32d46e0a3a3149200cbd133/FLAG0da978b54 [2020-07-10 15:28:34,378 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c6ecbcc/5bf8b31fe32d46e0a3a3149200cbd133 [2020-07-10 15:28:34,389 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 15:28:34,391 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 15:28:34,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 15:28:34,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 15:28:34,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 15:28:34,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 03:28:34" (1/1) ... [2020-07-10 15:28:34,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29a5f98f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:28:34, skipping insertion in model container [2020-07-10 15:28:34,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 03:28:34" (1/1) ... [2020-07-10 15:28:34,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 15:28:34,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 15:28:34,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 15:28:34,689 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 15:28:34,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 15:28:34,731 INFO L208 MainTranslator]: Completed translation [2020-07-10 15:28:34,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:28:34 WrapperNode [2020-07-10 15:28:34,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 15:28:34,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 15:28:34,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 15:28:34,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 15:28:34,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:28:34" (1/1) ... [2020-07-10 15:28:34,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:28:34" (1/1) ... [2020-07-10 15:28:34,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:28:34" (1/1) ... [2020-07-10 15:28:34,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:28:34" (1/1) ... [2020-07-10 15:28:34,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:28:34" (1/1) ... [2020-07-10 15:28:34,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:28:34" (1/1) ... [2020-07-10 15:28:34,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:28:34" (1/1) ... [2020-07-10 15:28:34,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 15:28:34,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 15:28:34,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 15:28:34,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 15:28:34,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:28:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-10 15:28:34,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 15:28:34,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 15:28:34,954 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-10 15:28:34,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-10 15:28:34,954 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 15:28:34,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 15:28:34,955 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-10 15:28:34,955 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-10 15:28:34,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-10 15:28:34,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-10 15:28:34,955 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 15:28:34,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 15:28:34,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 15:28:35,525 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 15:28:35,525 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-10 15:28:35,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 03:28:35 BoogieIcfgContainer [2020-07-10 15:28:35,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 15:28:35,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 15:28:35,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 15:28:35,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 15:28:35,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 03:28:34" (1/3) ... [2020-07-10 15:28:35,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@547b6aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 03:28:35, skipping insertion in model container [2020-07-10 15:28:35,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:28:34" (2/3) ... [2020-07-10 15:28:35,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@547b6aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 03:28:35, skipping insertion in model container [2020-07-10 15:28:35,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 03:28:35" (3/3) ... [2020-07-10 15:28:35,542 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i [2020-07-10 15:28:35,554 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-10 15:28:35,563 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 15:28:35,579 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 15:28:35,604 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 15:28:35,604 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 15:28:35,604 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-10 15:28:35,604 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 15:28:35,605 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 15:28:35,605 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 15:28:35,605 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 15:28:35,605 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 15:28:35,625 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-07-10 15:28:35,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-10 15:28:35,633 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 15:28:35,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 15:28:35,635 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 15:28:35,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 15:28:35,643 INFO L82 PathProgramCache]: Analyzing trace with hash -234903868, now seen corresponding path program 1 times [2020-07-10 15:28:35,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 15:28:35,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640460550] [2020-07-10 15:28:35,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 15:28:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:28:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:28:35,802 INFO L280 TraceCheckUtils]: 0: Hoare triple {50#true} assume true; {50#true} is VALID [2020-07-10 15:28:35,803 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {50#true} {50#true} #116#return; {50#true} is VALID [2020-07-10 15:28:35,806 INFO L263 TraceCheckUtils]: 0: Hoare triple {50#true} call ULTIMATE.init(); {50#true} is VALID [2020-07-10 15:28:35,807 INFO L280 TraceCheckUtils]: 1: Hoare triple {50#true} assume true; {50#true} is VALID [2020-07-10 15:28:35,807 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {50#true} {50#true} #116#return; {50#true} is VALID [2020-07-10 15:28:35,807 INFO L263 TraceCheckUtils]: 3: Hoare triple {50#true} call #t~ret10 := main(); {50#true} is VALID [2020-07-10 15:28:35,808 INFO L280 TraceCheckUtils]: 4: Hoare triple {50#true} havoc ~tagbuf_len~0;havoc ~t~0;assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~tagbuf_len~0 := #t~nondet0;havoc #t~nondet0; {50#true} is VALID [2020-07-10 15:28:35,808 INFO L280 TraceCheckUtils]: 5: Hoare triple {50#true} assume ~tagbuf_len~0 >= 1; {50#true} is VALID [2020-07-10 15:28:35,809 INFO L280 TraceCheckUtils]: 6: Hoare triple {50#true} ~t~0 := 0;#t~pre1 := ~tagbuf_len~0 - 1;~tagbuf_len~0 := ~tagbuf_len~0 - 1;havoc #t~pre1; {50#true} is VALID [2020-07-10 15:28:35,815 INFO L280 TraceCheckUtils]: 7: Hoare triple {50#true} assume false; {51#false} is VALID [2020-07-10 15:28:35,815 INFO L263 TraceCheckUtils]: 8: Hoare triple {51#false} call __VERIFIER_assert((if 0 <= ~t~0 then 1 else 0)); {51#false} is VALID [2020-07-10 15:28:35,816 INFO L280 TraceCheckUtils]: 9: Hoare triple {51#false} ~cond := #in~cond; {51#false} is VALID [2020-07-10 15:28:35,816 INFO L280 TraceCheckUtils]: 10: Hoare triple {51#false} assume 0 == ~cond; {51#false} is VALID [2020-07-10 15:28:35,817 INFO L280 TraceCheckUtils]: 11: Hoare triple {51#false} assume !false; {51#false} is VALID [2020-07-10 15:28:35,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 15:28:35,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640460550] [2020-07-10 15:28:35,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 15:28:35,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-10 15:28:35,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899944078] [2020-07-10 15:28:35,832 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-10 15:28:35,838 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 15:28:35,842 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-10 15:28:35,880 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:28:35,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-10 15:28:35,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-10 15:28:35,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-10 15:28:35,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-10 15:28:35,896 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2020-07-10 15:28:36,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:28:36,121 INFO L93 Difference]: Finished difference Result 87 states and 156 transitions. [2020-07-10 15:28:36,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-10 15:28:36,122 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-10 15:28:36,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 15:28:36,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 15:28:36,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 156 transitions. [2020-07-10 15:28:36,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 15:28:36,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 156 transitions. [2020-07-10 15:28:36,176 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 156 transitions. [2020-07-10 15:28:36,486 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 156 edges. 156 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:28:36,515 INFO L225 Difference]: With dead ends: 87 [2020-07-10 15:28:36,516 INFO L226 Difference]: Without dead ends: 42 [2020-07-10 15:28:36,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-10 15:28:36,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-10 15:28:36,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-07-10 15:28:36,644 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 15:28:36,645 INFO L82 GeneralOperation]: Start isEquivalent. First operand 42 states. Second operand 42 states. [2020-07-10 15:28:36,646 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand 42 states. [2020-07-10 15:28:36,646 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 42 states. [2020-07-10 15:28:36,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:28:36,662 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2020-07-10 15:28:36,663 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 60 transitions. [2020-07-10 15:28:36,667 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:28:36,668 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:28:36,668 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand 42 states. [2020-07-10 15:28:36,668 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 42 states. [2020-07-10 15:28:36,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:28:36,684 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2020-07-10 15:28:36,685 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 60 transitions. [2020-07-10 15:28:36,696 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:28:36,697 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:28:36,697 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 15:28:36,697 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 15:28:36,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-10 15:28:36,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2020-07-10 15:28:36,710 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 60 transitions. Word has length 12 [2020-07-10 15:28:36,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 15:28:36,711 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 60 transitions. [2020-07-10 15:28:36,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-10 15:28:36,711 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 60 transitions. [2020-07-10 15:28:36,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-10 15:28:36,714 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 15:28:36,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 15:28:36,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 15:28:36,715 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 15:28:36,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 15:28:36,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1276958999, now seen corresponding path program 1 times [2020-07-10 15:28:36,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 15:28:36,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478728420] [2020-07-10 15:28:36,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 15:28:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:28:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:28:36,907 INFO L280 TraceCheckUtils]: 0: Hoare triple {336#true} assume true; {336#true} is VALID [2020-07-10 15:28:36,907 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {336#true} {336#true} #116#return; {336#true} is VALID [2020-07-10 15:28:36,908 INFO L263 TraceCheckUtils]: 0: Hoare triple {336#true} call ULTIMATE.init(); {336#true} is VALID [2020-07-10 15:28:36,908 INFO L280 TraceCheckUtils]: 1: Hoare triple {336#true} assume true; {336#true} is VALID [2020-07-10 15:28:36,909 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {336#true} {336#true} #116#return; {336#true} is VALID [2020-07-10 15:28:36,909 INFO L263 TraceCheckUtils]: 3: Hoare triple {336#true} call #t~ret10 := main(); {336#true} is VALID [2020-07-10 15:28:36,909 INFO L280 TraceCheckUtils]: 4: Hoare triple {336#true} havoc ~tagbuf_len~0;havoc ~t~0;assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~tagbuf_len~0 := #t~nondet0;havoc #t~nondet0; {336#true} is VALID [2020-07-10 15:28:36,909 INFO L280 TraceCheckUtils]: 5: Hoare triple {336#true} assume ~tagbuf_len~0 >= 1; {336#true} is VALID [2020-07-10 15:28:36,911 INFO L280 TraceCheckUtils]: 6: Hoare triple {336#true} ~t~0 := 0;#t~pre1 := ~tagbuf_len~0 - 1;~tagbuf_len~0 := ~tagbuf_len~0 - 1;havoc #t~pre1; {340#(<= 0 main_~t~0)} is VALID [2020-07-10 15:28:36,914 INFO L280 TraceCheckUtils]: 7: Hoare triple {340#(<= 0 main_~t~0)} assume !false; {340#(<= 0 main_~t~0)} is VALID [2020-07-10 15:28:36,916 INFO L280 TraceCheckUtils]: 8: Hoare triple {340#(<= 0 main_~t~0)} assume ~t~0 == ~tagbuf_len~0; {340#(<= 0 main_~t~0)} is VALID [2020-07-10 15:28:36,918 INFO L263 TraceCheckUtils]: 9: Hoare triple {340#(<= 0 main_~t~0)} call __VERIFIER_assert((if 0 <= ~t~0 then 1 else 0)); {341#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-10 15:28:36,920 INFO L280 TraceCheckUtils]: 10: Hoare triple {341#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {342#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-10 15:28:36,924 INFO L280 TraceCheckUtils]: 11: Hoare triple {342#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {337#false} is VALID [2020-07-10 15:28:36,925 INFO L280 TraceCheckUtils]: 12: Hoare triple {337#false} assume !false; {337#false} is VALID [2020-07-10 15:28:36,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 15:28:36,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478728420] [2020-07-10 15:28:36,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 15:28:36,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-10 15:28:36,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3107343] [2020-07-10 15:28:36,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-10 15:28:36,931 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 15:28:36,931 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-10 15:28:36,948 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:28:36,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-10 15:28:36,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-10 15:28:36,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-10 15:28:36,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-10 15:28:36,949 INFO L87 Difference]: Start difference. First operand 42 states and 60 transitions. Second operand 5 states. [2020-07-10 15:28:37,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:28:37,449 INFO L93 Difference]: Finished difference Result 48 states and 65 transitions. [2020-07-10 15:28:37,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-10 15:28:37,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-10 15:28:37,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 15:28:37,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-10 15:28:37,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2020-07-10 15:28:37,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-10 15:28:37,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2020-07-10 15:28:37,458 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 65 transitions. [2020-07-10 15:28:37,565 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 65 edges. 65 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:28:37,568 INFO L225 Difference]: With dead ends: 48 [2020-07-10 15:28:37,569 INFO L226 Difference]: Without dead ends: 46 [2020-07-10 15:28:37,571 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 [2020-07-10 15:28:37,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-07-10 15:28:37,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-07-10 15:28:37,616 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 15:28:37,616 INFO L82 GeneralOperation]: Start isEquivalent. First operand 46 states. Second operand 46 states. [2020-07-10 15:28:37,617 INFO L74 IsIncluded]: Start isIncluded. First operand 46 states. Second operand 46 states. [2020-07-10 15:28:37,617 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 46 states. [2020-07-10 15:28:37,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:28:37,624 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2020-07-10 15:28:37,625 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 63 transitions. [2020-07-10 15:28:37,628 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:28:37,628 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:28:37,628 INFO L74 IsIncluded]: Start isIncluded. First operand 46 states. Second operand 46 states. [2020-07-10 15:28:37,629 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 46 states. [2020-07-10 15:28:37,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:28:37,639 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2020-07-10 15:28:37,639 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 63 transitions. [2020-07-10 15:28:37,640 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:28:37,640 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:28:37,640 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 15:28:37,641 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 15:28:37,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-07-10 15:28:37,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 63 transitions. [2020-07-10 15:28:37,647 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 63 transitions. Word has length 13 [2020-07-10 15:28:37,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 15:28:37,647 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 63 transitions. [2020-07-10 15:28:37,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-10 15:28:37,648 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 63 transitions. [2020-07-10 15:28:37,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-10 15:28:37,648 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 15:28:37,649 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 15:28:37,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-10 15:28:37,649 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 15:28:37,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 15:28:37,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1880963538, now seen corresponding path program 1 times [2020-07-10 15:28:37,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 15:28:37,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263222998] [2020-07-10 15:28:37,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 15:28:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:28:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:28:37,758 INFO L280 TraceCheckUtils]: 0: Hoare triple {581#true} assume true; {581#true} is VALID [2020-07-10 15:28:37,758 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {581#true} {581#true} #116#return; {581#true} is VALID [2020-07-10 15:28:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:28:37,769 INFO L280 TraceCheckUtils]: 0: Hoare triple {581#true} ~cond := #in~cond; {581#true} is VALID [2020-07-10 15:28:37,769 INFO L280 TraceCheckUtils]: 1: Hoare triple {581#true} assume !(0 == ~cond); {581#true} is VALID [2020-07-10 15:28:37,770 INFO L280 TraceCheckUtils]: 2: Hoare triple {581#true} assume true; {581#true} is VALID [2020-07-10 15:28:37,772 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {581#true} {585#(<= main_~t~0 main_~tagbuf_len~0)} #120#return; {585#(<= main_~t~0 main_~tagbuf_len~0)} is VALID [2020-07-10 15:28:37,772 INFO L263 TraceCheckUtils]: 0: Hoare triple {581#true} call ULTIMATE.init(); {581#true} is VALID [2020-07-10 15:28:37,773 INFO L280 TraceCheckUtils]: 1: Hoare triple {581#true} assume true; {581#true} is VALID [2020-07-10 15:28:37,773 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {581#true} {581#true} #116#return; {581#true} is VALID [2020-07-10 15:28:37,773 INFO L263 TraceCheckUtils]: 3: Hoare triple {581#true} call #t~ret10 := main(); {581#true} is VALID [2020-07-10 15:28:37,774 INFO L280 TraceCheckUtils]: 4: Hoare triple {581#true} havoc ~tagbuf_len~0;havoc ~t~0;assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~tagbuf_len~0 := #t~nondet0;havoc #t~nondet0; {581#true} is VALID [2020-07-10 15:28:37,774 INFO L280 TraceCheckUtils]: 5: Hoare triple {581#true} assume ~tagbuf_len~0 >= 1; {581#true} is VALID [2020-07-10 15:28:37,774 INFO L280 TraceCheckUtils]: 6: Hoare triple {581#true} ~t~0 := 0;#t~pre1 := ~tagbuf_len~0 - 1;~tagbuf_len~0 := ~tagbuf_len~0 - 1;havoc #t~pre1; {581#true} is VALID [2020-07-10 15:28:37,775 INFO L280 TraceCheckUtils]: 7: Hoare triple {581#true} assume !false; {581#true} is VALID [2020-07-10 15:28:37,777 INFO L280 TraceCheckUtils]: 8: Hoare triple {581#true} assume ~t~0 == ~tagbuf_len~0; {585#(<= main_~t~0 main_~tagbuf_len~0)} is VALID [2020-07-10 15:28:37,777 INFO L263 TraceCheckUtils]: 9: Hoare triple {585#(<= main_~t~0 main_~tagbuf_len~0)} call __VERIFIER_assert((if 0 <= ~t~0 then 1 else 0)); {581#true} is VALID [2020-07-10 15:28:37,778 INFO L280 TraceCheckUtils]: 10: Hoare triple {581#true} ~cond := #in~cond; {581#true} is VALID [2020-07-10 15:28:37,778 INFO L280 TraceCheckUtils]: 11: Hoare triple {581#true} assume !(0 == ~cond); {581#true} is VALID [2020-07-10 15:28:37,779 INFO L280 TraceCheckUtils]: 12: Hoare triple {581#true} assume true; {581#true} is VALID [2020-07-10 15:28:37,780 INFO L275 TraceCheckUtils]: 13: Hoare quadruple {581#true} {585#(<= main_~t~0 main_~tagbuf_len~0)} #120#return; {585#(<= main_~t~0 main_~tagbuf_len~0)} is VALID [2020-07-10 15:28:37,782 INFO L263 TraceCheckUtils]: 14: Hoare triple {585#(<= main_~t~0 main_~tagbuf_len~0)} call __VERIFIER_assert((if ~t~0 <= ~tagbuf_len~0 then 1 else 0)); {590#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-10 15:28:37,784 INFO L280 TraceCheckUtils]: 15: Hoare triple {590#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {591#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-10 15:28:37,786 INFO L280 TraceCheckUtils]: 16: Hoare triple {591#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {582#false} is VALID [2020-07-10 15:28:37,786 INFO L280 TraceCheckUtils]: 17: Hoare triple {582#false} assume !false; {582#false} is VALID [2020-07-10 15:28:37,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 15:28:37,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263222998] [2020-07-10 15:28:37,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 15:28:37,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-10 15:28:37,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328011259] [2020-07-10 15:28:37,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-07-10 15:28:37,790 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 15:28:37,791 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-10 15:28:37,817 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:28:37,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-10 15:28:37,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-10 15:28:37,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-10 15:28:37,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-10 15:28:37,819 INFO L87 Difference]: Start difference. First operand 46 states and 63 transitions. Second operand 5 states. [2020-07-10 15:28:38,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:28:38,140 INFO L93 Difference]: Finished difference Result 52 states and 68 transitions. [2020-07-10 15:28:38,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-10 15:28:38,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-07-10 15:28:38,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 15:28:38,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-10 15:28:38,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2020-07-10 15:28:38,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-10 15:28:38,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2020-07-10 15:28:38,149 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 65 transitions. [2020-07-10 15:28:38,244 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 65 edges. 65 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:28:38,246 INFO L225 Difference]: With dead ends: 52 [2020-07-10 15:28:38,246 INFO L226 Difference]: Without dead ends: 40 [2020-07-10 15:28:38,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-10 15:28:38,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-10 15:28:38,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-10 15:28:38,272 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 15:28:38,273 INFO L82 GeneralOperation]: Start isEquivalent. First operand 40 states. Second operand 40 states. [2020-07-10 15:28:38,273 INFO L74 IsIncluded]: Start isIncluded. First operand 40 states. Second operand 40 states. [2020-07-10 15:28:38,273 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 40 states. [2020-07-10 15:28:38,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:28:38,277 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2020-07-10 15:28:38,277 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2020-07-10 15:28:38,277 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:28:38,278 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:28:38,278 INFO L74 IsIncluded]: Start isIncluded. First operand 40 states. Second operand 40 states. [2020-07-10 15:28:38,278 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 40 states. [2020-07-10 15:28:38,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:28:38,281 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2020-07-10 15:28:38,282 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2020-07-10 15:28:38,282 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:28:38,282 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:28:38,282 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 15:28:38,283 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 15:28:38,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-10 15:28:38,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2020-07-10 15:28:38,286 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 18 [2020-07-10 15:28:38,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 15:28:38,286 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-07-10 15:28:38,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-10 15:28:38,287 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2020-07-10 15:28:38,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-10 15:28:38,287 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 15:28:38,287 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 15:28:38,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-10 15:28:38,288 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 15:28:38,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 15:28:38,288 INFO L82 PathProgramCache]: Analyzing trace with hash 996212544, now seen corresponding path program 1 times [2020-07-10 15:28:38,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 15:28:38,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319291500] [2020-07-10 15:28:38,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 15:28:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:28:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:28:38,374 INFO L280 TraceCheckUtils]: 0: Hoare triple {811#true} assume true; {811#true} is VALID [2020-07-10 15:28:38,374 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {811#true} {811#true} #116#return; {811#true} is VALID [2020-07-10 15:28:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:28:38,394 INFO L280 TraceCheckUtils]: 0: Hoare triple {811#true} ~cond := #in~cond; {811#true} is VALID [2020-07-10 15:28:38,395 INFO L280 TraceCheckUtils]: 1: Hoare triple {811#true} assume !(0 == ~cond); {811#true} is VALID [2020-07-10 15:28:38,395 INFO L280 TraceCheckUtils]: 2: Hoare triple {811#true} assume true; {811#true} is VALID [2020-07-10 15:28:38,396 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {811#true} {816#(<= main_~t~0 main_~tagbuf_len~0)} #128#return; {816#(<= main_~t~0 main_~tagbuf_len~0)} is VALID [2020-07-10 15:28:38,397 INFO L263 TraceCheckUtils]: 0: Hoare triple {811#true} call ULTIMATE.init(); {811#true} is VALID [2020-07-10 15:28:38,397 INFO L280 TraceCheckUtils]: 1: Hoare triple {811#true} assume true; {811#true} is VALID [2020-07-10 15:28:38,398 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {811#true} {811#true} #116#return; {811#true} is VALID [2020-07-10 15:28:38,398 INFO L263 TraceCheckUtils]: 3: Hoare triple {811#true} call #t~ret10 := main(); {811#true} is VALID [2020-07-10 15:28:38,398 INFO L280 TraceCheckUtils]: 4: Hoare triple {811#true} havoc ~tagbuf_len~0;havoc ~t~0;assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~tagbuf_len~0 := #t~nondet0;havoc #t~nondet0; {811#true} is VALID [2020-07-10 15:28:38,400 INFO L280 TraceCheckUtils]: 5: Hoare triple {811#true} assume ~tagbuf_len~0 >= 1; {815#(<= 1 main_~tagbuf_len~0)} is VALID [2020-07-10 15:28:38,401 INFO L280 TraceCheckUtils]: 6: Hoare triple {815#(<= 1 main_~tagbuf_len~0)} ~t~0 := 0;#t~pre1 := ~tagbuf_len~0 - 1;~tagbuf_len~0 := ~tagbuf_len~0 - 1;havoc #t~pre1; {816#(<= main_~t~0 main_~tagbuf_len~0)} is VALID [2020-07-10 15:28:38,401 INFO L280 TraceCheckUtils]: 7: Hoare triple {816#(<= main_~t~0 main_~tagbuf_len~0)} assume !false; {816#(<= main_~t~0 main_~tagbuf_len~0)} is VALID [2020-07-10 15:28:38,402 INFO L280 TraceCheckUtils]: 8: Hoare triple {816#(<= main_~t~0 main_~tagbuf_len~0)} assume !(~t~0 == ~tagbuf_len~0);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {816#(<= main_~t~0 main_~tagbuf_len~0)} is VALID [2020-07-10 15:28:38,402 INFO L280 TraceCheckUtils]: 9: Hoare triple {816#(<= main_~t~0 main_~tagbuf_len~0)} assume 0 != #t~nondet2;havoc #t~nondet2; {816#(<= main_~t~0 main_~tagbuf_len~0)} is VALID [2020-07-10 15:28:38,403 INFO L263 TraceCheckUtils]: 10: Hoare triple {816#(<= main_~t~0 main_~tagbuf_len~0)} call __VERIFIER_assert((if 0 <= ~t~0 then 1 else 0)); {811#true} is VALID [2020-07-10 15:28:38,403 INFO L280 TraceCheckUtils]: 11: Hoare triple {811#true} ~cond := #in~cond; {811#true} is VALID [2020-07-10 15:28:38,403 INFO L280 TraceCheckUtils]: 12: Hoare triple {811#true} assume !(0 == ~cond); {811#true} is VALID [2020-07-10 15:28:38,403 INFO L280 TraceCheckUtils]: 13: Hoare triple {811#true} assume true; {811#true} is VALID [2020-07-10 15:28:38,404 INFO L275 TraceCheckUtils]: 14: Hoare quadruple {811#true} {816#(<= main_~t~0 main_~tagbuf_len~0)} #128#return; {816#(<= main_~t~0 main_~tagbuf_len~0)} is VALID [2020-07-10 15:28:38,405 INFO L263 TraceCheckUtils]: 15: Hoare triple {816#(<= main_~t~0 main_~tagbuf_len~0)} call __VERIFIER_assert((if ~t~0 <= ~tagbuf_len~0 then 1 else 0)); {821#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-10 15:28:38,406 INFO L280 TraceCheckUtils]: 16: Hoare triple {821#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {822#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-10 15:28:38,407 INFO L280 TraceCheckUtils]: 17: Hoare triple {822#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {812#false} is VALID [2020-07-10 15:28:38,407 INFO L280 TraceCheckUtils]: 18: Hoare triple {812#false} assume !false; {812#false} is VALID [2020-07-10 15:28:38,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 15:28:38,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319291500] [2020-07-10 15:28:38,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 15:28:38,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-10 15:28:38,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502674250] [2020-07-10 15:28:38,410 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-07-10 15:28:38,411 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 15:28:38,411 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-10 15:28:38,439 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:28:38,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-10 15:28:38,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-10 15:28:38,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-10 15:28:38,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-10 15:28:38,440 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 6 states. [2020-07-10 15:28:38,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:28:38,825 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2020-07-10 15:28:38,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-10 15:28:38,825 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-07-10 15:28:38,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 15:28:38,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-10 15:28:38,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 67 transitions. [2020-07-10 15:28:38,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-10 15:28:38,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 67 transitions. [2020-07-10 15:28:38,840 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 67 transitions. [2020-07-10 15:28:38,915 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 67 edges. 67 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:28:38,918 INFO L225 Difference]: With dead ends: 55 [2020-07-10 15:28:38,919 INFO L226 Difference]: Without dead ends: 53 [2020-07-10 15:28:38,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-10 15:28:38,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-07-10 15:28:38,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2020-07-10 15:28:38,959 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 15:28:38,959 INFO L82 GeneralOperation]: Start isEquivalent. First operand 53 states. Second operand 51 states. [2020-07-10 15:28:38,959 INFO L74 IsIncluded]: Start isIncluded. First operand 53 states. Second operand 51 states. [2020-07-10 15:28:38,959 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 51 states. [2020-07-10 15:28:38,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:28:38,963 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2020-07-10 15:28:38,964 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2020-07-10 15:28:38,964 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:28:38,964 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:28:38,964 INFO L74 IsIncluded]: Start isIncluded. First operand 51 states. Second operand 53 states. [2020-07-10 15:28:38,965 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 53 states. [2020-07-10 15:28:38,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:28:38,968 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2020-07-10 15:28:38,969 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2020-07-10 15:28:38,969 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:28:38,969 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:28:38,969 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 15:28:38,970 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 15:28:38,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-07-10 15:28:38,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2020-07-10 15:28:38,973 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 19 [2020-07-10 15:28:38,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 15:28:38,974 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2020-07-10 15:28:38,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-10 15:28:38,974 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2020-07-10 15:28:38,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-10 15:28:38,975 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 15:28:38,975 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 15:28:38,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-10 15:28:38,976 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 15:28:38,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 15:28:38,976 INFO L82 PathProgramCache]: Analyzing trace with hash -381964826, now seen corresponding path program 1 times [2020-07-10 15:28:38,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 15:28:38,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17859359] [2020-07-10 15:28:38,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 15:28:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:28:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:28:39,094 INFO L280 TraceCheckUtils]: 0: Hoare triple {1087#true} assume true; {1087#true} is VALID [2020-07-10 15:28:39,095 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {1087#true} {1087#true} #116#return; {1087#true} is VALID [2020-07-10 15:28:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:28:39,108 INFO L280 TraceCheckUtils]: 0: Hoare triple {1087#true} ~cond := #in~cond; {1087#true} is VALID [2020-07-10 15:28:39,109 INFO L280 TraceCheckUtils]: 1: Hoare triple {1087#true} assume !(0 == ~cond); {1087#true} is VALID [2020-07-10 15:28:39,109 INFO L280 TraceCheckUtils]: 2: Hoare triple {1087#true} assume true; {1087#true} is VALID [2020-07-10 15:28:39,110 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1087#true} {1093#(<= (+ main_~t~0 1) main_~tagbuf_len~0)} #124#return; {1093#(<= (+ main_~t~0 1) main_~tagbuf_len~0)} is VALID [2020-07-10 15:28:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:28:39,122 INFO L280 TraceCheckUtils]: 0: Hoare triple {1087#true} ~cond := #in~cond; {1087#true} is VALID [2020-07-10 15:28:39,122 INFO L280 TraceCheckUtils]: 1: Hoare triple {1087#true} assume !(0 == ~cond); {1087#true} is VALID [2020-07-10 15:28:39,122 INFO L280 TraceCheckUtils]: 2: Hoare triple {1087#true} assume true; {1087#true} is VALID [2020-07-10 15:28:39,123 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1087#true} {1093#(<= (+ main_~t~0 1) main_~tagbuf_len~0)} #126#return; {1093#(<= (+ main_~t~0 1) main_~tagbuf_len~0)} is VALID [2020-07-10 15:28:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:28:39,130 INFO L280 TraceCheckUtils]: 0: Hoare triple {1087#true} ~cond := #in~cond; {1087#true} is VALID [2020-07-10 15:28:39,131 INFO L280 TraceCheckUtils]: 1: Hoare triple {1087#true} assume !(0 == ~cond); {1087#true} is VALID [2020-07-10 15:28:39,131 INFO L280 TraceCheckUtils]: 2: Hoare triple {1087#true} assume true; {1087#true} is VALID [2020-07-10 15:28:39,132 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1087#true} {1092#(<= main_~t~0 main_~tagbuf_len~0)} #128#return; {1092#(<= main_~t~0 main_~tagbuf_len~0)} is VALID [2020-07-10 15:28:39,132 INFO L263 TraceCheckUtils]: 0: Hoare triple {1087#true} call ULTIMATE.init(); {1087#true} is VALID [2020-07-10 15:28:39,133 INFO L280 TraceCheckUtils]: 1: Hoare triple {1087#true} assume true; {1087#true} is VALID [2020-07-10 15:28:39,133 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {1087#true} {1087#true} #116#return; {1087#true} is VALID [2020-07-10 15:28:39,133 INFO L263 TraceCheckUtils]: 3: Hoare triple {1087#true} call #t~ret10 := main(); {1087#true} is VALID [2020-07-10 15:28:39,133 INFO L280 TraceCheckUtils]: 4: Hoare triple {1087#true} havoc ~tagbuf_len~0;havoc ~t~0;assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~tagbuf_len~0 := #t~nondet0;havoc #t~nondet0; {1087#true} is VALID [2020-07-10 15:28:39,134 INFO L280 TraceCheckUtils]: 5: Hoare triple {1087#true} assume ~tagbuf_len~0 >= 1; {1091#(<= 1 main_~tagbuf_len~0)} is VALID [2020-07-10 15:28:39,135 INFO L280 TraceCheckUtils]: 6: Hoare triple {1091#(<= 1 main_~tagbuf_len~0)} ~t~0 := 0;#t~pre1 := ~tagbuf_len~0 - 1;~tagbuf_len~0 := ~tagbuf_len~0 - 1;havoc #t~pre1; {1092#(<= main_~t~0 main_~tagbuf_len~0)} is VALID [2020-07-10 15:28:39,136 INFO L280 TraceCheckUtils]: 7: Hoare triple {1092#(<= main_~t~0 main_~tagbuf_len~0)} assume !false; {1092#(<= main_~t~0 main_~tagbuf_len~0)} is VALID [2020-07-10 15:28:39,137 INFO L280 TraceCheckUtils]: 8: Hoare triple {1092#(<= main_~t~0 main_~tagbuf_len~0)} assume !(~t~0 == ~tagbuf_len~0);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {1093#(<= (+ main_~t~0 1) main_~tagbuf_len~0)} is VALID [2020-07-10 15:28:39,138 INFO L280 TraceCheckUtils]: 9: Hoare triple {1093#(<= (+ main_~t~0 1) main_~tagbuf_len~0)} assume !(0 != #t~nondet2);havoc #t~nondet2; {1093#(<= (+ main_~t~0 1) main_~tagbuf_len~0)} is VALID [2020-07-10 15:28:39,138 INFO L263 TraceCheckUtils]: 10: Hoare triple {1093#(<= (+ main_~t~0 1) main_~tagbuf_len~0)} call __VERIFIER_assert((if 0 <= ~t~0 then 1 else 0)); {1087#true} is VALID [2020-07-10 15:28:39,138 INFO L280 TraceCheckUtils]: 11: Hoare triple {1087#true} ~cond := #in~cond; {1087#true} is VALID [2020-07-10 15:28:39,139 INFO L280 TraceCheckUtils]: 12: Hoare triple {1087#true} assume !(0 == ~cond); {1087#true} is VALID [2020-07-10 15:28:39,139 INFO L280 TraceCheckUtils]: 13: Hoare triple {1087#true} assume true; {1087#true} is VALID [2020-07-10 15:28:39,145 INFO L275 TraceCheckUtils]: 14: Hoare quadruple {1087#true} {1093#(<= (+ main_~t~0 1) main_~tagbuf_len~0)} #124#return; {1093#(<= (+ main_~t~0 1) main_~tagbuf_len~0)} is VALID [2020-07-10 15:28:39,145 INFO L263 TraceCheckUtils]: 15: Hoare triple {1093#(<= (+ main_~t~0 1) main_~tagbuf_len~0)} call __VERIFIER_assert((if ~t~0 <= ~tagbuf_len~0 then 1 else 0)); {1087#true} is VALID [2020-07-10 15:28:39,146 INFO L280 TraceCheckUtils]: 16: Hoare triple {1087#true} ~cond := #in~cond; {1087#true} is VALID [2020-07-10 15:28:39,146 INFO L280 TraceCheckUtils]: 17: Hoare triple {1087#true} assume !(0 == ~cond); {1087#true} is VALID [2020-07-10 15:28:39,146 INFO L280 TraceCheckUtils]: 18: Hoare triple {1087#true} assume true; {1087#true} is VALID [2020-07-10 15:28:39,151 INFO L275 TraceCheckUtils]: 19: Hoare quadruple {1087#true} {1093#(<= (+ main_~t~0 1) main_~tagbuf_len~0)} #126#return; {1093#(<= (+ main_~t~0 1) main_~tagbuf_len~0)} is VALID [2020-07-10 15:28:39,152 INFO L280 TraceCheckUtils]: 20: Hoare triple {1093#(<= (+ main_~t~0 1) main_~tagbuf_len~0)} #t~post3 := ~t~0;~t~0 := 1 + #t~post3;havoc #t~post3; {1092#(<= main_~t~0 main_~tagbuf_len~0)} is VALID [2020-07-10 15:28:39,153 INFO L280 TraceCheckUtils]: 21: Hoare triple {1092#(<= main_~t~0 main_~tagbuf_len~0)} assume !false; {1092#(<= main_~t~0 main_~tagbuf_len~0)} is VALID [2020-07-10 15:28:39,153 INFO L280 TraceCheckUtils]: 22: Hoare triple {1092#(<= main_~t~0 main_~tagbuf_len~0)} assume !(~t~0 == ~tagbuf_len~0);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {1092#(<= main_~t~0 main_~tagbuf_len~0)} is VALID [2020-07-10 15:28:39,154 INFO L280 TraceCheckUtils]: 23: Hoare triple {1092#(<= main_~t~0 main_~tagbuf_len~0)} assume 0 != #t~nondet2;havoc #t~nondet2; {1092#(<= main_~t~0 main_~tagbuf_len~0)} is VALID [2020-07-10 15:28:39,154 INFO L263 TraceCheckUtils]: 24: Hoare triple {1092#(<= main_~t~0 main_~tagbuf_len~0)} call __VERIFIER_assert((if 0 <= ~t~0 then 1 else 0)); {1087#true} is VALID [2020-07-10 15:28:39,154 INFO L280 TraceCheckUtils]: 25: Hoare triple {1087#true} ~cond := #in~cond; {1087#true} is VALID [2020-07-10 15:28:39,154 INFO L280 TraceCheckUtils]: 26: Hoare triple {1087#true} assume !(0 == ~cond); {1087#true} is VALID [2020-07-10 15:28:39,154 INFO L280 TraceCheckUtils]: 27: Hoare triple {1087#true} assume true; {1087#true} is VALID [2020-07-10 15:28:39,156 INFO L275 TraceCheckUtils]: 28: Hoare quadruple {1087#true} {1092#(<= main_~t~0 main_~tagbuf_len~0)} #128#return; {1092#(<= main_~t~0 main_~tagbuf_len~0)} is VALID [2020-07-10 15:28:39,158 INFO L263 TraceCheckUtils]: 29: Hoare triple {1092#(<= main_~t~0 main_~tagbuf_len~0)} call __VERIFIER_assert((if ~t~0 <= ~tagbuf_len~0 then 1 else 0)); {1106#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-10 15:28:39,159 INFO L280 TraceCheckUtils]: 30: Hoare triple {1106#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {1107#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-10 15:28:39,169 INFO L280 TraceCheckUtils]: 31: Hoare triple {1107#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {1088#false} is VALID [2020-07-10 15:28:39,169 INFO L280 TraceCheckUtils]: 32: Hoare triple {1088#false} assume !false; {1088#false} is VALID [2020-07-10 15:28:39,171 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-07-10 15:28:39,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17859359] [2020-07-10 15:28:39,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526874252] [2020-07-10 15:28:39,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-10 15:28:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:28:39,210 INFO L264 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-10 15:28:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:28:39,225 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-10 15:28:39,519 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-10 15:28:39,569 INFO L263 TraceCheckUtils]: 0: Hoare triple {1087#true} call ULTIMATE.init(); {1087#true} is VALID [2020-07-10 15:28:39,569 INFO L280 TraceCheckUtils]: 1: Hoare triple {1087#true} assume true; {1087#true} is VALID [2020-07-10 15:28:39,570 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {1087#true} {1087#true} #116#return; {1087#true} is VALID [2020-07-10 15:28:39,570 INFO L263 TraceCheckUtils]: 3: Hoare triple {1087#true} call #t~ret10 := main(); {1087#true} is VALID [2020-07-10 15:28:39,570 INFO L280 TraceCheckUtils]: 4: Hoare triple {1087#true} havoc ~tagbuf_len~0;havoc ~t~0;assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~tagbuf_len~0 := #t~nondet0;havoc #t~nondet0; {1087#true} is VALID [2020-07-10 15:28:39,571 INFO L280 TraceCheckUtils]: 5: Hoare triple {1087#true} assume ~tagbuf_len~0 >= 1; {1091#(<= 1 main_~tagbuf_len~0)} is VALID [2020-07-10 15:28:39,572 INFO L280 TraceCheckUtils]: 6: Hoare triple {1091#(<= 1 main_~tagbuf_len~0)} ~t~0 := 0;#t~pre1 := ~tagbuf_len~0 - 1;~tagbuf_len~0 := ~tagbuf_len~0 - 1;havoc #t~pre1; {1129#(and (<= 0 main_~tagbuf_len~0) (<= main_~t~0 0))} is VALID [2020-07-10 15:28:39,573 INFO L280 TraceCheckUtils]: 7: Hoare triple {1129#(and (<= 0 main_~tagbuf_len~0) (<= main_~t~0 0))} assume !false; {1129#(and (<= 0 main_~tagbuf_len~0) (<= main_~t~0 0))} is VALID [2020-07-10 15:28:39,574 INFO L280 TraceCheckUtils]: 8: Hoare triple {1129#(and (<= 0 main_~tagbuf_len~0) (<= main_~t~0 0))} assume !(~t~0 == ~tagbuf_len~0);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {1136#(and (<= 0 main_~tagbuf_len~0) (<= main_~t~0 0) (not (= main_~tagbuf_len~0 main_~t~0)))} is VALID [2020-07-10 15:28:39,575 INFO L280 TraceCheckUtils]: 9: Hoare triple {1136#(and (<= 0 main_~tagbuf_len~0) (<= main_~t~0 0) (not (= main_~tagbuf_len~0 main_~t~0)))} assume !(0 != #t~nondet2);havoc #t~nondet2; {1136#(and (<= 0 main_~tagbuf_len~0) (<= main_~t~0 0) (not (= main_~tagbuf_len~0 main_~t~0)))} is VALID [2020-07-10 15:28:39,575 INFO L263 TraceCheckUtils]: 10: Hoare triple {1136#(and (<= 0 main_~tagbuf_len~0) (<= main_~t~0 0) (not (= main_~tagbuf_len~0 main_~t~0)))} call __VERIFIER_assert((if 0 <= ~t~0 then 1 else 0)); {1087#true} is VALID [2020-07-10 15:28:39,576 INFO L280 TraceCheckUtils]: 11: Hoare triple {1087#true} ~cond := #in~cond; {1087#true} is VALID [2020-07-10 15:28:39,576 INFO L280 TraceCheckUtils]: 12: Hoare triple {1087#true} assume !(0 == ~cond); {1087#true} is VALID [2020-07-10 15:28:39,576 INFO L280 TraceCheckUtils]: 13: Hoare triple {1087#true} assume true; {1087#true} is VALID [2020-07-10 15:28:39,577 INFO L275 TraceCheckUtils]: 14: Hoare quadruple {1087#true} {1136#(and (<= 0 main_~tagbuf_len~0) (<= main_~t~0 0) (not (= main_~tagbuf_len~0 main_~t~0)))} #124#return; {1136#(and (<= 0 main_~tagbuf_len~0) (<= main_~t~0 0) (not (= main_~tagbuf_len~0 main_~t~0)))} is VALID [2020-07-10 15:28:39,578 INFO L263 TraceCheckUtils]: 15: Hoare triple {1136#(and (<= 0 main_~tagbuf_len~0) (<= main_~t~0 0) (not (= main_~tagbuf_len~0 main_~t~0)))} call __VERIFIER_assert((if ~t~0 <= ~tagbuf_len~0 then 1 else 0)); {1087#true} is VALID [2020-07-10 15:28:39,578 INFO L280 TraceCheckUtils]: 16: Hoare triple {1087#true} ~cond := #in~cond; {1087#true} is VALID [2020-07-10 15:28:39,578 INFO L280 TraceCheckUtils]: 17: Hoare triple {1087#true} assume !(0 == ~cond); {1087#true} is VALID [2020-07-10 15:28:39,578 INFO L280 TraceCheckUtils]: 18: Hoare triple {1087#true} assume true; {1087#true} is VALID [2020-07-10 15:28:39,580 INFO L275 TraceCheckUtils]: 19: Hoare quadruple {1087#true} {1136#(and (<= 0 main_~tagbuf_len~0) (<= main_~t~0 0) (not (= main_~tagbuf_len~0 main_~t~0)))} #126#return; {1136#(and (<= 0 main_~tagbuf_len~0) (<= main_~t~0 0) (not (= main_~tagbuf_len~0 main_~t~0)))} is VALID [2020-07-10 15:28:39,581 INFO L280 TraceCheckUtils]: 20: Hoare triple {1136#(and (<= 0 main_~tagbuf_len~0) (<= main_~t~0 0) (not (= main_~tagbuf_len~0 main_~t~0)))} #t~post3 := ~t~0;~t~0 := 1 + #t~post3;havoc #t~post3; {1173#(and (<= 0 main_~tagbuf_len~0) (<= main_~t~0 1) (<= main_~t~0 main_~tagbuf_len~0))} is VALID [2020-07-10 15:28:39,582 INFO L280 TraceCheckUtils]: 21: Hoare triple {1173#(and (<= 0 main_~tagbuf_len~0) (<= main_~t~0 1) (<= main_~t~0 main_~tagbuf_len~0))} assume !false; {1173#(and (<= 0 main_~tagbuf_len~0) (<= main_~t~0 1) (<= main_~t~0 main_~tagbuf_len~0))} is VALID [2020-07-10 15:28:39,583 INFO L280 TraceCheckUtils]: 22: Hoare triple {1173#(and (<= 0 main_~tagbuf_len~0) (<= main_~t~0 1) (<= main_~t~0 main_~tagbuf_len~0))} assume !(~t~0 == ~tagbuf_len~0);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {1173#(and (<= 0 main_~tagbuf_len~0) (<= main_~t~0 1) (<= main_~t~0 main_~tagbuf_len~0))} is VALID [2020-07-10 15:28:39,584 INFO L280 TraceCheckUtils]: 23: Hoare triple {1173#(and (<= 0 main_~tagbuf_len~0) (<= main_~t~0 1) (<= main_~t~0 main_~tagbuf_len~0))} assume 0 != #t~nondet2;havoc #t~nondet2; {1173#(and (<= 0 main_~tagbuf_len~0) (<= main_~t~0 1) (<= main_~t~0 main_~tagbuf_len~0))} is VALID [2020-07-10 15:28:39,584 INFO L263 TraceCheckUtils]: 24: Hoare triple {1173#(and (<= 0 main_~tagbuf_len~0) (<= main_~t~0 1) (<= main_~t~0 main_~tagbuf_len~0))} call __VERIFIER_assert((if 0 <= ~t~0 then 1 else 0)); {1087#true} is VALID [2020-07-10 15:28:39,585 INFO L280 TraceCheckUtils]: 25: Hoare triple {1087#true} ~cond := #in~cond; {1087#true} is VALID [2020-07-10 15:28:39,585 INFO L280 TraceCheckUtils]: 26: Hoare triple {1087#true} assume !(0 == ~cond); {1087#true} is VALID [2020-07-10 15:28:39,585 INFO L280 TraceCheckUtils]: 27: Hoare triple {1087#true} assume true; {1087#true} is VALID [2020-07-10 15:28:39,586 INFO L275 TraceCheckUtils]: 28: Hoare quadruple {1087#true} {1173#(and (<= 0 main_~tagbuf_len~0) (<= main_~t~0 1) (<= main_~t~0 main_~tagbuf_len~0))} #128#return; {1173#(and (<= 0 main_~tagbuf_len~0) (<= main_~t~0 1) (<= main_~t~0 main_~tagbuf_len~0))} is VALID [2020-07-10 15:28:39,588 INFO L263 TraceCheckUtils]: 29: Hoare triple {1173#(and (<= 0 main_~tagbuf_len~0) (<= main_~t~0 1) (<= main_~t~0 main_~tagbuf_len~0))} call __VERIFIER_assert((if ~t~0 <= ~tagbuf_len~0 then 1 else 0)); {1201#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2020-07-10 15:28:39,588 INFO L280 TraceCheckUtils]: 30: Hoare triple {1201#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {1205#(<= 1 __VERIFIER_assert_~cond)} is VALID [2020-07-10 15:28:39,589 INFO L280 TraceCheckUtils]: 31: Hoare triple {1205#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {1088#false} is VALID [2020-07-10 15:28:39,590 INFO L280 TraceCheckUtils]: 32: Hoare triple {1088#false} assume !false; {1088#false} is VALID [2020-07-10 15:28:39,593 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-10 15:28:39,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-10 15:28:39,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2020-07-10 15:28:39,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881814986] [2020-07-10 15:28:39,595 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-07-10 15:28:39,595 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 15:28:39,595 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 12 states. [2020-07-10 15:28:39,668 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 43 edges. 43 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:28:39,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-10 15:28:39,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-10 15:28:39,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-10 15:28:39,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-07-10 15:28:39,670 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand 12 states. [2020-07-10 15:28:40,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:28:40,973 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2020-07-10 15:28:40,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-10 15:28:40,973 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-07-10 15:28:40,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 15:28:40,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-10 15:28:40,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 100 transitions. [2020-07-10 15:28:40,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-10 15:28:40,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 100 transitions. [2020-07-10 15:28:40,982 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 12 states and 100 transitions. [2020-07-10 15:28:41,154 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 100 edges. 100 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:28:41,155 INFO L225 Difference]: With dead ends: 75 [2020-07-10 15:28:41,155 INFO L226 Difference]: Without dead ends: 0 [2020-07-10 15:28:41,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-07-10 15:28:41,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-10 15:28:41,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-10 15:28:41,158 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 15:28:41,158 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-10 15:28:41,159 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-10 15:28:41,159 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-10 15:28:41,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:28:41,159 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-10 15:28:41,159 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-10 15:28:41,160 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:28:41,160 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:28:41,160 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-10 15:28:41,160 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-10 15:28:41,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:28:41,161 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-10 15:28:41,161 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-10 15:28:41,161 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:28:41,161 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:28:41,161 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 15:28:41,161 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 15:28:41,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-10 15:28:41,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-10 15:28:41,162 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-07-10 15:28:41,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 15:28:41,163 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-10 15:28:41,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-10 15:28:41,163 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-10 15:28:41,163 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:28:41,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-10 15:28:41,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-10 15:28:41,729 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-10 15:28:41,729 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-10 15:28:41,729 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-10 15:28:41,729 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-10 15:28:41,729 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-10 15:28:41,729 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-10 15:28:41,729 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-10 15:28:41,729 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-10 15:28:41,730 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-10 15:28:41,730 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-10 15:28:41,730 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-10 15:28:41,730 INFO L268 CegarLoopResult]: For program point L27(lines 27 29) no Hoare annotation was computed. [2020-07-10 15:28:41,730 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 66) no Hoare annotation was computed. [2020-07-10 15:28:41,730 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2020-07-10 15:28:41,730 INFO L264 CegarLoopResult]: At program point L23-1(line 23) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2020-07-10 15:28:41,731 INFO L268 CegarLoopResult]: For program point L48(lines 48 52) no Hoare annotation was computed. [2020-07-10 15:28:41,731 INFO L268 CegarLoopResult]: For program point L44(lines 44 53) no Hoare annotation was computed. [2020-07-10 15:28:41,731 INFO L264 CegarLoopResult]: At program point L49(line 49) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2020-07-10 15:28:41,731 INFO L264 CegarLoopResult]: At program point L49-1(line 49) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2020-07-10 15:28:41,731 INFO L264 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (and (<= 0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-07-10 15:28:41,731 INFO L264 CegarLoopResult]: At program point L45-1(line 45) the Hoare annotation is: (and (<= 0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-07-10 15:28:41,732 INFO L264 CegarLoopResult]: At program point L37-2(lines 37 61) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2020-07-10 15:28:41,732 INFO L264 CegarLoopResult]: At program point L37-3(lines 37 61) the Hoare annotation is: (and (<= 0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-07-10 15:28:41,732 INFO L264 CegarLoopResult]: At program point L62(line 62) the Hoare annotation is: (and (<= 0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-07-10 15:28:41,732 INFO L264 CegarLoopResult]: At program point L58(line 58) the Hoare annotation is: (and (<= 0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-07-10 15:28:41,732 INFO L264 CegarLoopResult]: At program point L21-2(lines 21 33) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2020-07-10 15:28:41,732 INFO L264 CegarLoopResult]: At program point L21-3(lines 21 33) the Hoare annotation is: (and (<= 0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-07-10 15:28:41,732 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-10 15:28:41,733 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 66) no Hoare annotation was computed. [2020-07-10 15:28:41,733 INFO L268 CegarLoopResult]: For program point L38(lines 38 42) no Hoare annotation was computed. [2020-07-10 15:28:41,733 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (and (<= 0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-07-10 15:28:41,733 INFO L271 CegarLoopResult]: At program point L63(lines 14 66) the Hoare annotation is: true [2020-07-10 15:28:41,733 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (<= 0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-07-10 15:28:41,733 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 66) the Hoare annotation is: true [2020-07-10 15:28:41,733 INFO L264 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (and (<= 0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-07-10 15:28:41,734 INFO L268 CegarLoopResult]: For program point L59(line 59) no Hoare annotation was computed. [2020-07-10 15:28:41,734 INFO L268 CegarLoopResult]: For program point L55(lines 55 57) no Hoare annotation was computed. [2020-07-10 15:28:41,734 INFO L268 CegarLoopResult]: For program point L22(lines 22 26) no Hoare annotation was computed. [2020-07-10 15:28:41,734 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-07-10 15:28:41,734 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-07-10 15:28:41,734 INFO L268 CegarLoopResult]: For program point L43(lines 43 57) no Hoare annotation was computed. [2020-07-10 15:28:41,734 INFO L264 CegarLoopResult]: At program point L43-1(lines 43 57) the Hoare annotation is: (and (<= 0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-07-10 15:28:41,734 INFO L264 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2020-07-10 15:28:41,735 INFO L264 CegarLoopResult]: At program point L39-1(line 39) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2020-07-10 15:28:41,735 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-07-10 15:28:41,735 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-10 15:28:41,735 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-10 15:28:41,735 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-10 15:28:41,735 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-10 15:28:41,735 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-10 15:28:41,736 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-10 15:28:41,740 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-10 15:28:41,740 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-10 15:28:41,740 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-10 15:28:41,741 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-10 15:28:41,741 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-10 15:28:41,741 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-10 15:28:41,741 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-10 15:28:41,741 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-10 15:28:41,741 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-10 15:28:41,741 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-10 15:28:41,741 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-10 15:28:41,741 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-10 15:28:41,741 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-10 15:28:41,741 WARN L170 areAnnotationChecker]: L4-2 has no Hoare annotation [2020-07-10 15:28:41,741 WARN L170 areAnnotationChecker]: L18-1 has no Hoare annotation [2020-07-10 15:28:41,742 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-10 15:28:41,742 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-10 15:28:41,742 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-10 15:28:41,742 WARN L170 areAnnotationChecker]: L7-2 has no Hoare annotation [2020-07-10 15:28:41,744 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-10 15:28:41,744 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-10 15:28:41,745 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 15:28:41,745 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 15:28:41,745 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 15:28:41,745 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 15:28:41,745 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 15:28:41,745 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 15:28:41,745 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 15:28:41,745 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 15:28:41,745 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 15:28:41,745 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 15:28:41,745 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 15:28:41,745 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 15:28:41,745 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 15:28:41,746 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 15:28:41,746 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 15:28:41,746 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 15:28:41,746 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-10 15:28:41,746 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-10 15:28:41,746 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-10 15:28:41,746 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2020-07-10 15:28:41,746 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2020-07-10 15:28:41,746 WARN L170 areAnnotationChecker]: L35 has no Hoare annotation [2020-07-10 15:28:41,746 WARN L170 areAnnotationChecker]: L35 has no Hoare annotation [2020-07-10 15:28:41,746 WARN L170 areAnnotationChecker]: L46 has no Hoare annotation [2020-07-10 15:28:41,747 WARN L170 areAnnotationChecker]: L46 has no Hoare annotation [2020-07-10 15:28:41,747 WARN L170 areAnnotationChecker]: L59 has no Hoare annotation [2020-07-10 15:28:41,747 WARN L170 areAnnotationChecker]: L59 has no Hoare annotation [2020-07-10 15:28:41,747 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-10 15:28:41,747 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-10 15:28:41,748 WARN L170 areAnnotationChecker]: L38 has no Hoare annotation [2020-07-10 15:28:41,748 WARN L170 areAnnotationChecker]: L48 has no Hoare annotation [2020-07-10 15:28:41,748 WARN L170 areAnnotationChecker]: L48 has no Hoare annotation [2020-07-10 15:28:41,748 WARN L170 areAnnotationChecker]: L38 has no Hoare annotation [2020-07-10 15:28:41,748 WARN L170 areAnnotationChecker]: L38 has no Hoare annotation [2020-07-10 15:28:41,748 WARN L170 areAnnotationChecker]: L43 has no Hoare annotation [2020-07-10 15:28:41,748 WARN L170 areAnnotationChecker]: L43 has no Hoare annotation [2020-07-10 15:28:41,748 WARN L170 areAnnotationChecker]: L44 has no Hoare annotation [2020-07-10 15:28:41,749 WARN L170 areAnnotationChecker]: L44 has no Hoare annotation [2020-07-10 15:28:41,749 WARN L170 areAnnotationChecker]: L55 has no Hoare annotation [2020-07-10 15:28:41,749 WARN L170 areAnnotationChecker]: L55 has no Hoare annotation [2020-07-10 15:28:41,749 INFO L163 areAnnotationChecker]: CFG has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-10 15:28:41,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.07 03:28:41 BoogieIcfgContainer [2020-07-10 15:28:41,762 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-10 15:28:41,766 INFO L168 Benchmark]: Toolchain (without parser) took 7374.76 ms. Allocated memory was 138.4 MB in the beginning and 286.3 MB in the end (delta: 147.8 MB). Free memory was 102.5 MB in the beginning and 207.6 MB in the end (delta: -105.1 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB. [2020-07-10 15:28:41,767 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory is still 121.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-10 15:28:41,768 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.31 ms. Allocated memory is still 138.4 MB. Free memory was 102.5 MB in the beginning and 91.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-07-10 15:28:41,769 INFO L168 Benchmark]: Boogie Preprocessor took 142.59 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 91.9 MB in the beginning and 181.3 MB in the end (delta: -89.5 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-07-10 15:28:41,769 INFO L168 Benchmark]: RCFGBuilder took 654.71 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 151.3 MB in the end (delta: 30.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 7.1 GB. [2020-07-10 15:28:41,770 INFO L168 Benchmark]: TraceAbstraction took 6230.34 ms. Allocated memory was 202.9 MB in the beginning and 286.3 MB in the end (delta: 83.4 MB). Free memory was 151.3 MB in the beginning and 207.6 MB in the end (delta: -56.3 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2020-07-10 15:28:41,774 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory is still 121.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 340.31 ms. Allocated memory is still 138.4 MB. Free memory was 102.5 MB in the beginning and 91.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.59 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 91.9 MB in the beginning and 181.3 MB in the end (delta: -89.5 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 654.71 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 151.3 MB in the end (delta: 30.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6230.34 ms. Allocated memory was 202.9 MB in the beginning and 286.3 MB in the end (delta: 83.4 MB). Free memory was 151.3 MB in the beginning and 207.6 MB in the end (delta: -56.3 MB). Peak memory consumption was 27.1 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: 21]: Loop Invariant Derived loop invariant: t <= tagbuf_len && 0 <= t - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: t <= tagbuf_len && 0 <= t - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 259 SDtfs, 82 SDslu, 583 SDs, 0 SdLazy, 346 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 69 PreInvPairs, 105 NumberOfFragments, 152 HoareAnnotationTreeSize, 69 FomulaSimplifications, 197 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 24 FomulaSimplificationsInter, 72 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 8076 SizeOfPredicates, 2 NumberOfNonLiveVariables, 68 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 42/46 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...