/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/NetBSD_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:43:47,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:43:47,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:43:47,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:43:47,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:43:47,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:43:47,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:43:47,850 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:43:47,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:43:47,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:43:47,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:43:47,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:43:47,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:43:47,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:43:47,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:43:47,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:43:47,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:43:47,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:43:47,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:43:47,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:43:47,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:43:47,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:43:47,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:43:47,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:43:47,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:43:47,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:43:47,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:43:47,884 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:43:47,886 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 13:43:47,912 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:43:47,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:43:47,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:43:47,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:43:47,915 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:43:47,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:43:47,915 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:43:47,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:43:47,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:43:47,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:43:47,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:43:47,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:43:47,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:43:47,917 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:43:47,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:43:47,917 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:43:47,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:43:47,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:43:47,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:43:47,918 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:43:47,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:43:47,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:43:47,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:43:47,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:43:47,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:43:47,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:43:47,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:43:47,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:43:47,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:43:47,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:43:48,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:43:48,421 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:43:48,424 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:43:48,426 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:43:48,427 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:43:48,428 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2020-09-04 13:43:48,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/003ff010d/6f4846d46fda4b4f8882727c912bf8c8/FLAG305c9a0b7 [2020-09-04 13:43:49,070 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:43:49,071 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2020-09-04 13:43:49,078 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/003ff010d/6f4846d46fda4b4f8882727c912bf8c8/FLAG305c9a0b7 [2020-09-04 13:43:49,428 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/003ff010d/6f4846d46fda4b4f8882727c912bf8c8 [2020-09-04 13:43:49,442 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:43:49,444 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:43:49,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:43:49,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:43:49,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:43:49,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:43:49" (1/1) ... [2020-09-04 13:43:49,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e4c149c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:49, skipping insertion in model container [2020-09-04 13:43:49,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:43:49" (1/1) ... [2020-09-04 13:43:49,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:43:49,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:43:49,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:43:49,717 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:43:49,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:43:49,755 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:43:49,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:49 WrapperNode [2020-09-04 13:43:49,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:43:49,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:43:49,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:43:49,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:43:49,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:49" (1/1) ... [2020-09-04 13:43:49,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:49" (1/1) ... [2020-09-04 13:43:49,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:49" (1/1) ... [2020-09-04 13:43:49,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:49" (1/1) ... [2020-09-04 13:43:49,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:49" (1/1) ... [2020-09-04 13:43:49,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:49" (1/1) ... [2020-09-04 13:43:49,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:49" (1/1) ... [2020-09-04 13:43:49,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:43:49,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:43:49,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:43:49,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:43:49,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:49" (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 13:43:49,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:43:49,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:43:49,949 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 13:43:49,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:43:49,949 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:43:49,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:43:49,950 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:43:49,950 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 13:43:49,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:43:49,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:43:49,950 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:43:49,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:43:49,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:43:50,181 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:43:50,182 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 13:43:50,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:43:50 BoogieIcfgContainer [2020-09-04 13:43:50,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:43:50,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:43:50,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:43:50,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:43:50,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:43:49" (1/3) ... [2020-09-04 13:43:50,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ae9dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:43:50, skipping insertion in model container [2020-09-04 13:43:50,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:49" (2/3) ... [2020-09-04 13:43:50,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ae9dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:43:50, skipping insertion in model container [2020-09-04 13:43:50,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:43:50" (3/3) ... [2020-09-04 13:43:50,196 INFO L109 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2020-09-04 13:43:50,208 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:43:50,218 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:43:50,239 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:43:50,270 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:43:50,270 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:43:50,270 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:43:50,271 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:43:50,271 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:43:50,271 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:43:50,271 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:43:50,272 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:43:50,293 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-09-04 13:43:50,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-04 13:43:50,300 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:50,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:43:50,301 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:50,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:50,307 INFO L82 PathProgramCache]: Analyzing trace with hash 826978896, now seen corresponding path program 1 times [2020-09-04 13:43:50,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:50,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592042068] [2020-09-04 13:43:50,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:50,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:50,628 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 13:43:50,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592042068] [2020-09-04 13:43:50,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:43:50,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:43:50,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723243972] [2020-09-04 13:43:50,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:43:50,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:50,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:43:50,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:43:50,660 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-09-04 13:43:50,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:50,757 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-09-04 13:43:50,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:43:50,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-04 13:43:50,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:50,769 INFO L225 Difference]: With dead ends: 44 [2020-09-04 13:43:50,769 INFO L226 Difference]: Without dead ends: 21 [2020-09-04 13:43:50,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:43:50,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-09-04 13:43:50,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-09-04 13:43:50,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-09-04 13:43:50,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-09-04 13:43:50,822 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 12 [2020-09-04 13:43:50,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:50,822 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-09-04 13:43:50,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:43:50,823 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-09-04 13:43:50,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-04 13:43:50,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:50,824 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:43:50,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:43:50,825 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:50,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:50,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1747164342, now seen corresponding path program 1 times [2020-09-04 13:43:50,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:50,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236136523] [2020-09-04 13:43:50,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:50,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:50,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 13:43:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:50,932 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 13:43:50,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236136523] [2020-09-04 13:43:50,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:43:50,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 13:43:50,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662754927] [2020-09-04 13:43:50,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 13:43:50,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:50,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 13:43:50,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:43:50,938 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 6 states. [2020-09-04 13:43:51,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:51,044 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-04 13:43:51,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 13:43:51,046 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-09-04 13:43:51,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:51,048 INFO L225 Difference]: With dead ends: 31 [2020-09-04 13:43:51,048 INFO L226 Difference]: Without dead ends: 29 [2020-09-04 13:43:51,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:43:51,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-04 13:43:51,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-09-04 13:43:51,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-04 13:43:51,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-04 13:43:51,065 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 17 [2020-09-04 13:43:51,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:51,066 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-04 13:43:51,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 13:43:51,066 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-04 13:43:51,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-04 13:43:51,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:51,069 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:43:51,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:43:51,070 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:51,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:51,070 INFO L82 PathProgramCache]: Analyzing trace with hash -94267114, now seen corresponding path program 1 times [2020-09-04 13:43:51,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:51,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434169448] [2020-09-04 13:43:51,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:51,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:51,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 13:43:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:51,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-04 13:43:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:51,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-04 13:43:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:51,196 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 13:43:51,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434169448] [2020-09-04 13:43:51,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566298134] [2020-09-04 13:43:51,197 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 13:43:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:51,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-04 13:43:51,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:43:51,396 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:43:51,403 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:43:51,440 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 13:43:51,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:43:51,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-09-04 13:43:51,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949448694] [2020-09-04 13:43:51,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 13:43:51,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:51,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 13:43:51,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-04 13:43:51,444 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 11 states. [2020-09-04 13:43:51,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:51,560 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-09-04 13:43:51,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 13:43:51,561 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-04 13:43:51,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:51,562 INFO L225 Difference]: With dead ends: 39 [2020-09-04 13:43:51,562 INFO L226 Difference]: Without dead ends: 37 [2020-09-04 13:43:51,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-04 13:43:51,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-04 13:43:51,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-09-04 13:43:51,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-04 13:43:51,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-09-04 13:43:51,573 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 29 [2020-09-04 13:43:51,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:51,574 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-09-04 13:43:51,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 13:43:51,574 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-09-04 13:43:51,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-04 13:43:51,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:51,576 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:43:51,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-09-04 13:43:51,790 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:51,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:51,792 INFO L82 PathProgramCache]: Analyzing trace with hash -2069363338, now seen corresponding path program 2 times [2020-09-04 13:43:51,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:51,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335100989] [2020-09-04 13:43:51,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:51,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:51,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 13:43:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:51,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-04 13:43:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:51,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-04 13:43:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:51,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 13:43:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:51,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-04 13:43:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:51,912 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-09-04 13:43:51,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335100989] [2020-09-04 13:43:51,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550913752] [2020-09-04 13:43:51,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:43:51,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-04 13:43:51,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:43:51,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-04 13:43:51,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:43:51,997 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:43:52,028 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-09-04 13:43:52,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:43:52,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-09-04 13:43:52,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009777560] [2020-09-04 13:43:52,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 13:43:52,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:52,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 13:43:52,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:43:52,031 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 8 states. [2020-09-04 13:43:52,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:52,083 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2020-09-04 13:43:52,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 13:43:52,083 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-09-04 13:43:52,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:52,084 INFO L225 Difference]: With dead ends: 36 [2020-09-04 13:43:52,084 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 13:43:52,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-04 13:43:52,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 13:43:52,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 13:43:52,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 13:43:52,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 13:43:52,087 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2020-09-04 13:43:52,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:52,087 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 13:43:52,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 13:43:52,087 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 13:43:52,087 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 13:43:52,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:43:52,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 13:43:52,377 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 13:43:52,377 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:43:52,378 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:43:52,378 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 13:43:52,378 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 13:43:52,378 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:43:52,378 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-04 13:43:52,378 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-04 13:43:52,379 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-09-04 13:43:52,379 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-04 13:43:52,379 INFO L271 CegarLoopResult]: At program point L33(lines 14 34) the Hoare annotation is: true [2020-09-04 13:43:52,379 INFO L268 CegarLoopResult]: For program point L31(lines 27 32) no Hoare annotation was computed. [2020-09-04 13:43:52,379 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0)) [2020-09-04 13:43:52,380 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 34) the Hoare annotation is: true [2020-09-04 13:43:52,380 INFO L264 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0)) [2020-09-04 13:43:52,380 INFO L264 CegarLoopResult]: At program point L27-2(lines 27 32) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0)) [2020-09-04 13:43:52,380 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 34) no Hoare annotation was computed. [2020-09-04 13:43:52,380 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-04 13:43:52,381 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-04 13:43:52,381 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 34) no Hoare annotation was computed. [2020-09-04 13:43:52,381 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-04 13:43:52,381 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-04 13:43:52,381 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-04 13:43:52,381 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-04 13:43:52,382 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-04 13:43:52,382 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-04 13:43:52,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:43:52 BoogieIcfgContainer [2020-09-04 13:43:52,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:43:52,408 INFO L168 Benchmark]: Toolchain (without parser) took 2962.42 ms. Allocated memory was 138.9 MB in the beginning and 233.3 MB in the end (delta: 94.4 MB). Free memory was 102.6 MB in the beginning and 157.5 MB in the end (delta: -54.8 MB). Peak memory consumption was 39.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:52,408 INFO L168 Benchmark]: CDTParser took 1.36 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:43:52,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.74 ms. Allocated memory is still 138.9 MB. Free memory was 102.4 MB in the beginning and 92.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:52,411 INFO L168 Benchmark]: Boogie Preprocessor took 108.51 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 92.9 MB in the beginning and 180.4 MB in the end (delta: -87.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:52,412 INFO L168 Benchmark]: RCFGBuilder took 321.30 ms. Allocated memory is still 200.8 MB. Free memory was 180.4 MB in the beginning and 167.3 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:52,413 INFO L168 Benchmark]: TraceAbstraction took 2216.27 ms. Allocated memory was 200.8 MB in the beginning and 233.3 MB in the end (delta: 32.5 MB). Free memory was 166.6 MB in the beginning and 157.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:52,417 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.36 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 310.74 ms. Allocated memory is still 138.9 MB. Free memory was 102.4 MB in the beginning and 92.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.51 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 92.9 MB in the beginning and 180.4 MB in the end (delta: -87.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 321.30 ms. Allocated memory is still 200.8 MB. Free memory was 180.4 MB in the beginning and 167.3 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2216.27 ms. Allocated memory was 200.8 MB in the beginning and 233.3 MB in the end (delta: 32.5 MB). Free memory was 166.6 MB in the beginning and 157.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (1 <= MAXPATHLEN && glob2_pathlim_off <= MAXPATHLEN) && 0 <= glob2_p_off - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 6, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 70 SDtfs, 39 SDslu, 221 SDs, 0 SdLazy, 128 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 124 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 16 PreInvPairs, 27 NumberOfFragments, 42 HoareAnnotationTreeSize, 16 FomulaSimplifications, 108 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 163 ConstructedInterpolants, 0 QuantifiedInterpolants, 9919 SizeOfPredicates, 9 NumberOfNonLiveVariables, 153 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 150/164 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...