/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -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 0.1.25-3af5e1f [2020-09-04 13:43:55,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:43:55,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:43:55,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:43:55,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:43:55,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:43:55,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:43:55,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:43:55,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:43:55,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:43:55,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:43:55,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:43:55,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:43:55,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:43:55,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:43:55,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:43:55,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:43:55,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:43:55,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:43:55,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:43:55,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:43:55,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:43:55,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:43:55,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:43:55,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:43:55,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:43:55,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:43:55,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:43:55,101 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:43:55,161 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:43:55,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:43:55,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:43:55,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:43:55,163 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:43:55,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:43:55,164 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:43:55,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:43:55,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:43:55,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:43:55,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:43:55,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:43:55,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:43:55,165 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:43:55,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:43:55,165 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:43:55,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:43:55,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:43:55,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:43:55,166 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:43:55,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:43:55,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:43:55,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:43:55,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:43:55,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:43:55,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:43:55,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:43:55,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:43:55,170 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:43:55,171 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:43:55,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:43:55,688 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:43:55,692 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:43:55,693 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:43:55,694 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:43:55,695 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2020-09-04 13:43:55,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b005cc84f/81dc64fd30e94bfba5221d1241fd455f/FLAG8e333e571 [2020-09-04 13:43:56,336 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:43:56,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2020-09-04 13:43:56,346 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b005cc84f/81dc64fd30e94bfba5221d1241fd455f/FLAG8e333e571 [2020-09-04 13:43:56,666 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b005cc84f/81dc64fd30e94bfba5221d1241fd455f [2020-09-04 13:43:56,680 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:43:56,682 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:43:56,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:43:56,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:43:56,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:43:56,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:43:56" (1/1) ... [2020-09-04 13:43:56,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73ad355a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:56, skipping insertion in model container [2020-09-04 13:43:56,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:43:56" (1/1) ... [2020-09-04 13:43:56,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:43:56,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:43:56,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:43:56,956 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:43:56,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:43:57,000 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:43:57,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:57 WrapperNode [2020-09-04 13:43:57,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:43:57,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:43:57,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:43:57,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:43:57,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:57" (1/1) ... [2020-09-04 13:43:57,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:57" (1/1) ... [2020-09-04 13:43:57,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:57" (1/1) ... [2020-09-04 13:43:57,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:57" (1/1) ... [2020-09-04 13:43:57,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:57" (1/1) ... [2020-09-04 13:43:57,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:57" (1/1) ... [2020-09-04 13:43:57,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:57" (1/1) ... [2020-09-04 13:43:57,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:43:57,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:43:57,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:43:57,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:43:57,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:43:57,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:43:57,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:43:57,216 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 13:43:57,217 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:43:57,217 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:43:57,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:43:57,217 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:43:57,218 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 13:43:57,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:43:57,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:43:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:43:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:43:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:43:57,521 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:43:57,522 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-04 13:43:57,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:43:57 BoogieIcfgContainer [2020-09-04 13:43:57,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:43:57,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:43:57,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:43:57,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:43:57,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:43:56" (1/3) ... [2020-09-04 13:43:57,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640cd521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:43:57, skipping insertion in model container [2020-09-04 13:43:57,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:57" (2/3) ... [2020-09-04 13:43:57,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640cd521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:43:57, skipping insertion in model container [2020-09-04 13:43:57,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:43:57" (3/3) ... [2020-09-04 13:43:57,538 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i [2020-09-04 13:43:57,551 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:43:57,568 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:43:57,620 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:43:57,658 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:43:57,659 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:43:57,659 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:43:57,659 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:43:57,660 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:43:57,660 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:43:57,660 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:43:57,660 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:43:57,685 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-09-04 13:43:57,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-04 13:43:57,692 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:57,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:43:57,694 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:57,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:57,700 INFO L82 PathProgramCache]: Analyzing trace with hash -234903868, now seen corresponding path program 1 times [2020-09-04 13:43:57,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:57,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385180971] [2020-09-04 13:43:57,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:57,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:57,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:57,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385180971] [2020-09-04 13:43:57,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:43:57,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-04 13:43:57,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298612470] [2020-09-04 13:43:57,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-04 13:43:57,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:57,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-04 13:43:57,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 13:43:57,875 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2020-09-04 13:43:57,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:57,914 INFO L93 Difference]: Finished difference Result 87 states and 156 transitions. [2020-09-04 13:43:57,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-04 13:43:57,916 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-09-04 13:43:57,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:57,929 INFO L225 Difference]: With dead ends: 87 [2020-09-04 13:43:57,930 INFO L226 Difference]: Without dead ends: 42 [2020-09-04 13:43:57,936 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 [2020-09-04 13:43:57,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-04 13:43:57,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-04 13:43:57,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-04 13:43:57,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2020-09-04 13:43:57,997 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 60 transitions. Word has length 12 [2020-09-04 13:43:57,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:57,998 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 60 transitions. [2020-09-04 13:43:57,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-04 13:43:57,998 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 60 transitions. [2020-09-04 13:43:58,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-04 13:43:58,001 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:58,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:43:58,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:43:58,002 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:58,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:58,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1276958999, now seen corresponding path program 1 times [2020-09-04 13:43:58,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:58,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123948439] [2020-09-04 13:43:58,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:58,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:58,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:58,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123948439] [2020-09-04 13:43:58,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:43:58,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:43:58,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629054668] [2020-09-04 13:43:58,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:43:58,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:58,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:43:58,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:43:58,130 INFO L87 Difference]: Start difference. First operand 42 states and 60 transitions. Second operand 5 states. [2020-09-04 13:43:58,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:58,305 INFO L93 Difference]: Finished difference Result 48 states and 65 transitions. [2020-09-04 13:43:58,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:43:58,306 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-04 13:43:58,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:58,308 INFO L225 Difference]: With dead ends: 48 [2020-09-04 13:43:58,308 INFO L226 Difference]: Without dead ends: 46 [2020-09-04 13:43:58,310 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 [2020-09-04 13:43:58,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-04 13:43:58,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-04 13:43:58,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-04 13:43:58,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 63 transitions. [2020-09-04 13:43:58,326 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 63 transitions. Word has length 13 [2020-09-04 13:43:58,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:58,327 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 63 transitions. [2020-09-04 13:43:58,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:43:58,327 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 63 transitions. [2020-09-04 13:43:58,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-04 13:43:58,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:58,329 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:43:58,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:43:58,329 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:58,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:58,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1880963538, now seen corresponding path program 1 times [2020-09-04 13:43:58,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:58,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765591711] [2020-09-04 13:43:58,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:58,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:58,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:58,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 13:43:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:58,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:58,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765591711] [2020-09-04 13:43:58,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:43:58,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:43:58,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132421958] [2020-09-04 13:43:58,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:43:58,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:58,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:43:58,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:43:58,443 INFO L87 Difference]: Start difference. First operand 46 states and 63 transitions. Second operand 5 states. [2020-09-04 13:43:58,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:58,528 INFO L93 Difference]: Finished difference Result 52 states and 68 transitions. [2020-09-04 13:43:58,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:43:58,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-04 13:43:58,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:58,530 INFO L225 Difference]: With dead ends: 52 [2020-09-04 13:43:58,531 INFO L226 Difference]: Without dead ends: 40 [2020-09-04 13:43:58,532 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 [2020-09-04 13:43:58,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-04 13:43:58,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-04 13:43:58,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-04 13:43:58,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2020-09-04 13:43:58,542 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 18 [2020-09-04 13:43:58,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:58,543 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-09-04 13:43:58,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:43:58,543 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2020-09-04 13:43:58,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-04 13:43:58,544 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:58,544 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:43:58,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 13:43:58,545 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:58,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:58,546 INFO L82 PathProgramCache]: Analyzing trace with hash 996212544, now seen corresponding path program 1 times [2020-09-04 13:43:58,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:58,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291037779] [2020-09-04 13:43:58,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:58,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:58,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:43:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:58,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:58,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291037779] [2020-09-04 13:43:58,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:43:58,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 13:43:58,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170278355] [2020-09-04 13:43:58,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 13:43:58,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:58,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 13:43:58,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:43:58,633 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 6 states. [2020-09-04 13:43:58,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:58,737 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2020-09-04 13:43:58,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 13:43:58,737 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-09-04 13:43:58,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:58,739 INFO L225 Difference]: With dead ends: 55 [2020-09-04 13:43:58,739 INFO L226 Difference]: Without dead ends: 53 [2020-09-04 13:43:58,740 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 [2020-09-04 13:43:58,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-04 13:43:58,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2020-09-04 13:43:58,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-04 13:43:58,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2020-09-04 13:43:58,766 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 19 [2020-09-04 13:43:58,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:58,767 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2020-09-04 13:43:58,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 13:43:58,767 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2020-09-04 13:43:58,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 13:43:58,769 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:58,769 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] [2020-09-04 13:43:58,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 13:43:58,770 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:58,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:58,770 INFO L82 PathProgramCache]: Analyzing trace with hash -381964826, now seen corresponding path program 1 times [2020-09-04 13:43:58,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:58,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35223697] [2020-09-04 13:43:58,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:58,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:58,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:43:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:58,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-04 13:43:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:58,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-04 13:43:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:58,916 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-04 13:43:58,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35223697] [2020-09-04 13:43:58,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603678446] [2020-09-04 13:43:58,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:43:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:58,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-04 13:43:58,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:43:59,127 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-09-04 13:43:59,163 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-04 13:43:59,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:43:59,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2020-09-04 13:43:59,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98299483] [2020-09-04 13:43:59,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 13:43:59,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:59,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 13:43:59,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-09-04 13:43:59,166 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand 12 states. [2020-09-04 13:43:59,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:59,422 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2020-09-04 13:43:59,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 13:43:59,422 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-09-04 13:43:59,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:59,423 INFO L225 Difference]: With dead ends: 75 [2020-09-04 13:43:59,423 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 13:43:59,425 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 [2020-09-04 13:43:59,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 13:43:59,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 13:43:59,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 13:43:59,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 13:43:59,426 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-09-04 13:43:59,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:59,427 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 13:43:59,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 13:43:59,427 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 13:43:59,427 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 13:43:59,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:43:59,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 13:43:59,906 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 13:43:59,906 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:43:59,907 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:43:59,907 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 13:43:59,907 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 13:43:59,907 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:43:59,907 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-04 13:43:59,908 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-04 13:43:59,908 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-09-04 13:43:59,908 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-04 13:43:59,908 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-04 13:43:59,908 INFO L268 CegarLoopResult]: For program point L27(lines 27 29) no Hoare annotation was computed. [2020-09-04 13:43:59,909 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 66) no Hoare annotation was computed. [2020-09-04 13:43:59,909 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-09-04 13:43:59,909 INFO L264 CegarLoopResult]: At program point L23-1(line 23) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-09-04 13:43:59,909 INFO L268 CegarLoopResult]: For program point L48(lines 48 52) no Hoare annotation was computed. [2020-09-04 13:43:59,909 INFO L268 CegarLoopResult]: For program point L44(lines 44 53) no Hoare annotation was computed. [2020-09-04 13:43:59,910 INFO L264 CegarLoopResult]: At program point L49(line 49) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-09-04 13:43:59,910 INFO L264 CegarLoopResult]: At program point L49-1(line 49) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-09-04 13:43:59,910 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)) [2020-09-04 13:43:59,910 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)) [2020-09-04 13:43:59,911 INFO L264 CegarLoopResult]: At program point L37-2(lines 37 61) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-09-04 13:43:59,911 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)) [2020-09-04 13:43:59,911 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)) [2020-09-04 13:43:59,911 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)) [2020-09-04 13:43:59,912 INFO L264 CegarLoopResult]: At program point L21-2(lines 21 33) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-09-04 13:43:59,912 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)) [2020-09-04 13:43:59,912 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-04 13:43:59,912 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 66) no Hoare annotation was computed. [2020-09-04 13:43:59,912 INFO L268 CegarLoopResult]: For program point L38(lines 38 42) no Hoare annotation was computed. [2020-09-04 13:43:59,913 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)) [2020-09-04 13:43:59,913 INFO L271 CegarLoopResult]: At program point L63(lines 14 66) the Hoare annotation is: true [2020-09-04 13:43:59,913 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)) [2020-09-04 13:43:59,913 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 66) the Hoare annotation is: true [2020-09-04 13:43:59,914 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)) [2020-09-04 13:43:59,914 INFO L268 CegarLoopResult]: For program point L59(line 59) no Hoare annotation was computed. [2020-09-04 13:43:59,914 INFO L268 CegarLoopResult]: For program point L55(lines 55 57) no Hoare annotation was computed. [2020-09-04 13:43:59,914 INFO L268 CegarLoopResult]: For program point L22(lines 22 26) no Hoare annotation was computed. [2020-09-04 13:43:59,914 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-04 13:43:59,914 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-04 13:43:59,915 INFO L268 CegarLoopResult]: For program point L43(lines 43 57) no Hoare annotation was computed. [2020-09-04 13:43:59,915 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)) [2020-09-04 13:43:59,915 INFO L264 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-09-04 13:43:59,915 INFO L264 CegarLoopResult]: At program point L39-1(line 39) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-09-04 13:43:59,915 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-04 13:43:59,916 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-04 13:43:59,916 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-04 13:43:59,916 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-04 13:43:59,916 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-04 13:43:59,916 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-04 13:43:59,917 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-04 13:43:59,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:43:59 BoogieIcfgContainer [2020-09-04 13:43:59,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:43:59,941 INFO L168 Benchmark]: Toolchain (without parser) took 3258.21 ms. Allocated memory was 138.4 MB in the beginning and 231.7 MB in the end (delta: 93.3 MB). Free memory was 102.0 MB in the beginning and 105.1 MB in the end (delta: -3.2 MB). Peak memory consumption was 90.2 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:59,943 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 13:43:59,944 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.43 ms. Allocated memory is still 138.4 MB. Free memory was 101.8 MB in the beginning and 91.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:59,945 INFO L168 Benchmark]: Boogie Preprocessor took 145.04 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 91.4 MB in the beginning and 178.3 MB in the end (delta: -86.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:59,946 INFO L168 Benchmark]: RCFGBuilder took 381.17 ms. Allocated memory is still 200.3 MB. Free memory was 178.3 MB in the beginning and 161.4 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:59,947 INFO L168 Benchmark]: TraceAbstraction took 2408.17 ms. Allocated memory was 200.3 MB in the beginning and 231.7 MB in the end (delta: 31.5 MB). Free memory was 160.7 MB in the beginning and 105.1 MB in the end (delta: 55.6 MB). Peak memory consumption was 87.0 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:59,952 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 316.43 ms. Allocated memory is still 138.4 MB. Free memory was 101.8 MB in the beginning and 91.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 145.04 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 91.4 MB in the beginning and 178.3 MB in the end (delta: -86.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 381.17 ms. Allocated memory is still 200.3 MB. Free memory was 178.3 MB in the beginning and 161.4 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2408.17 ms. Allocated memory was 200.3 MB in the beginning and 231.7 MB in the end (delta: 31.5 MB). Free memory was 160.7 MB in the beginning and 105.1 MB in the end (delta: 55.6 MB). Peak memory consumption was 87.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 0 <= t && t <= tagbuf_len - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 0 <= t && t <= tagbuf_len - 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: 1.9s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 259 SDtfs, 87 SDslu, 525 SDs, 0 SdLazy, 292 SolverSat, 94 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s 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: 0.0s 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, 0.0s SatisfiabilityAnalysisTime, 0.6s 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...