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/ldv-regression/test28-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:08:40,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:08:40,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:08:40,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:08:40,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:08:40,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:08:40,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:08:40,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:08:40,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:08:40,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:08:40,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:08:40,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:08:40,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:08:40,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:08:40,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:08:40,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:08:40,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:08:40,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:08:40,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:08:40,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:08:40,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:08:40,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:08:40,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:08:40,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:08:40,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:08:40,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:08:40,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:08:40,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:08:40,698 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:08:40,719 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:08:40,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:08:40,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:08:40,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:08:40,721 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:08:40,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:08:40,722 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:08:40,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:08:40,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:08:40,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:08:40,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:08:40,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:08:40,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:08:40,723 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:08:40,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:08:40,724 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:08:40,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:08:40,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:08:40,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:08:40,724 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:08:40,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:08:40,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:08:40,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:08:40,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:08:40,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:08:40,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:08:40,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:08:40,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:08:40,726 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:08:41,012 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:08:41,026 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:08:41,029 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:08:41,031 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:08:41,031 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:08:41,032 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test28-2.c [2019-10-14 23:08:41,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b3c4214c/c7747d98aafa47f2986041734d8977b5/FLAGde7b339c7 [2019-10-14 23:08:41,582 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:08:41,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test28-2.c [2019-10-14 23:08:41,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b3c4214c/c7747d98aafa47f2986041734d8977b5/FLAGde7b339c7 [2019-10-14 23:08:41,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b3c4214c/c7747d98aafa47f2986041734d8977b5 [2019-10-14 23:08:41,949 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:08:41,951 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:08:41,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:08:41,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:08:41,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:08:41,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:08:41" (1/1) ... [2019-10-14 23:08:41,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c0cb938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:41, skipping insertion in model container [2019-10-14 23:08:41,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:08:41" (1/1) ... [2019-10-14 23:08:41,967 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:08:41,982 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:08:42,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:08:42,206 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:08:42,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:08:42,235 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:08:42,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:42 WrapperNode [2019-10-14 23:08:42,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:08:42,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:08:42,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:08:42,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:08:42,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:42" (1/1) ... [2019-10-14 23:08:42,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:42" (1/1) ... [2019-10-14 23:08:42,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:42" (1/1) ... [2019-10-14 23:08:42,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:42" (1/1) ... [2019-10-14 23:08:42,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:42" (1/1) ... [2019-10-14 23:08:42,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:42" (1/1) ... [2019-10-14 23:08:42,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:42" (1/1) ... [2019-10-14 23:08:42,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:08:42,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:08:42,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:08:42,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:08:42,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:08:42,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:08:42,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:08:42,423 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:08:42,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:08:42,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:08:42,423 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:08:42,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:08:42,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:08:42,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:08:42,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:08:42,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:08:42,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:08:42,637 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:08:42,637 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-14 23:08:42,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:08:42 BoogieIcfgContainer [2019-10-14 23:08:42,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:08:42,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:08:42,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:08:42,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:08:42,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:08:41" (1/3) ... [2019-10-14 23:08:42,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be10c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:08:42, skipping insertion in model container [2019-10-14 23:08:42,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:42" (2/3) ... [2019-10-14 23:08:42,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be10c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:08:42, skipping insertion in model container [2019-10-14 23:08:42,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:08:42" (3/3) ... [2019-10-14 23:08:42,648 INFO L109 eAbstractionObserver]: Analyzing ICFG test28-2.c [2019-10-14 23:08:42,658 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:08:42,665 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:08:42,677 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:08:42,700 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:08:42,700 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:08:42,701 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:08:42,701 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:08:42,701 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:08:42,701 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:08:42,701 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:08:42,701 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:08:42,716 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-10-14 23:08:42,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-14 23:08:42,720 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:42,721 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:42,723 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:42,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:42,729 INFO L82 PathProgramCache]: Analyzing trace with hash 668850033, now seen corresponding path program 1 times [2019-10-14 23:08:42,737 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:42,738 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066243671] [2019-10-14 23:08:42,739 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:42,739 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:42,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:43,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:43,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:08:43,030 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066243671] [2019-10-14 23:08:43,031 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:08:43,033 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:08:43,034 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081310762] [2019-10-14 23:08:43,039 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:08:43,040 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:43,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:08:43,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:08:43,058 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2019-10-14 23:08:43,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:43,186 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2019-10-14 23:08:43,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:08:43,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-10-14 23:08:43,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:43,199 INFO L225 Difference]: With dead ends: 34 [2019-10-14 23:08:43,199 INFO L226 Difference]: Without dead ends: 21 [2019-10-14 23:08:43,203 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:08:43,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-14 23:08:43,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2019-10-14 23:08:43,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-14 23:08:43,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-10-14 23:08:43,244 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2019-10-14 23:08:43,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:43,245 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-10-14 23:08:43,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:08:43,245 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-10-14 23:08:43,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-14 23:08:43,246 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:43,246 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:43,247 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:43,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:43,247 INFO L82 PathProgramCache]: Analyzing trace with hash 667002991, now seen corresponding path program 1 times [2019-10-14 23:08:43,248 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:43,248 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460155134] [2019-10-14 23:08:43,248 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:43,249 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:43,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:43,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:08:43,389 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460155134] [2019-10-14 23:08:43,389 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:08:43,389 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:08:43,390 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221356501] [2019-10-14 23:08:43,392 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:08:43,392 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:43,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:08:43,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:08:43,393 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 8 states. [2019-10-14 23:08:43,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:43,516 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-10-14 23:08:43,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:08:43,517 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2019-10-14 23:08:43,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:43,518 INFO L225 Difference]: With dead ends: 23 [2019-10-14 23:08:43,518 INFO L226 Difference]: Without dead ends: 14 [2019-10-14 23:08:43,520 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:08:43,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-10-14 23:08:43,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-10-14 23:08:43,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-14 23:08:43,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2019-10-14 23:08:43,524 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2019-10-14 23:08:43,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:43,525 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2019-10-14 23:08:43,525 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:08:43,525 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2019-10-14 23:08:43,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-14 23:08:43,526 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:43,526 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:43,526 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:43,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:43,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1851109901, now seen corresponding path program 1 times [2019-10-14 23:08:43,527 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:43,527 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096735350] [2019-10-14 23:08:43,527 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:43,527 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:43,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:43,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:08:43,774 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096735350] [2019-10-14 23:08:43,774 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:08:43,774 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:08:43,775 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556016507] [2019-10-14 23:08:43,775 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:08:43,776 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:43,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:08:43,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:08:43,777 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 9 states. [2019-10-14 23:08:43,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:43,908 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2019-10-14 23:08:43,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:08:43,909 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2019-10-14 23:08:43,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:43,909 INFO L225 Difference]: With dead ends: 14 [2019-10-14 23:08:43,909 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:08:43,910 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:08:43,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:08:43,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:08:43,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:08:43,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:08:43,911 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-10-14 23:08:43,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:43,911 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:08:43,912 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:08:43,912 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:08:43,912 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:08:43,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:08:43,960 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:08:43,961 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-14 23:08:43,961 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:08:43,961 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:08:43,962 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-14 23:08:43,962 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:08:43,962 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:08:43,962 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 28) no Hoare annotation was computed. [2019-10-14 23:08:43,962 INFO L439 ceAbstractionStarter]: At program point L21(lines 11 28) the Hoare annotation is: false [2019-10-14 23:08:43,962 INFO L443 ceAbstractionStarter]: For program point L15(lines 15 19) no Hoare annotation was computed. [2019-10-14 23:08:43,963 INFO L443 ceAbstractionStarter]: For program point L15-2(lines 15 19) no Hoare annotation was computed. [2019-10-14 23:08:43,963 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 28) no Hoare annotation was computed. [2019-10-14 23:08:43,963 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 10 28) the Hoare annotation is: (= |#valid| |old(#valid)|) [2019-10-14 23:08:43,963 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 26) no Hoare annotation was computed. [2019-10-14 23:08:43,963 INFO L443 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2019-10-14 23:08:43,963 INFO L443 ceAbstractionStarter]: For program point L20-2(lines 20 22) no Hoare annotation was computed. [2019-10-14 23:08:43,964 INFO L443 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-10-14 23:08:43,964 INFO L443 ceAbstractionStarter]: For program point L14-2(line 14) no Hoare annotation was computed. [2019-10-14 23:08:43,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:08:43 BoogieIcfgContainer [2019-10-14 23:08:43,977 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:08:43,981 INFO L168 Benchmark]: Toolchain (without parser) took 2028.12 ms. Allocated memory was 146.8 MB in the beginning and 232.8 MB in the end (delta: 86.0 MB). Free memory was 103.3 MB in the beginning and 194.4 MB in the end (delta: -91.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-14 23:08:43,982 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 146.8 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-14 23:08:43,984 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.61 ms. Allocated memory is still 146.8 MB. Free memory was 103.1 MB in the beginning and 93.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-10-14 23:08:43,986 INFO L168 Benchmark]: Boogie Preprocessor took 128.08 ms. Allocated memory was 146.8 MB in the beginning and 205.0 MB in the end (delta: 58.2 MB). Free memory was 93.3 MB in the beginning and 182.9 MB in the end (delta: -89.6 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-10-14 23:08:43,988 INFO L168 Benchmark]: RCFGBuilder took 274.86 ms. Allocated memory is still 205.0 MB. Free memory was 182.9 MB in the beginning and 169.7 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2019-10-14 23:08:43,990 INFO L168 Benchmark]: TraceAbstraction took 1336.14 ms. Allocated memory was 205.0 MB in the beginning and 232.8 MB in the end (delta: 27.8 MB). Free memory was 169.1 MB in the beginning and 194.4 MB in the end (delta: -25.3 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-10-14 23:08:44,002 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 146.8 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 284.61 ms. Allocated memory is still 146.8 MB. Free memory was 103.1 MB in the beginning and 93.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.08 ms. Allocated memory was 146.8 MB in the beginning and 205.0 MB in the end (delta: 58.2 MB). Free memory was 93.3 MB in the beginning and 182.9 MB in the end (delta: -89.6 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 274.86 ms. Allocated memory is still 205.0 MB. Free memory was 182.9 MB in the beginning and 169.7 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1336.14 ms. Allocated memory was 205.0 MB in the beginning and 232.8 MB in the end (delta: 27.8 MB). Free memory was 169.1 MB in the beginning and 194.4 MB in the end (delta: -25.3 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 26]: 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: 11]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 1 error locations. Result: SAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 32 SDslu, 72 SDs, 0 SdLazy, 126 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, 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, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 16 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 1644 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...