/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/ldv-regression/test29-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:29:45,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:29:45,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:29:45,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:29:45,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:29:45,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:29:45,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:29:45,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:29:45,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:29:45,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:29:45,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:29:45,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:29:45,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:29:45,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:29:45,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:29:45,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:29:45,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:29:45,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:29:45,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:29:45,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:29:45,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:29:45,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:29:45,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:29:45,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:29:45,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:29:45,798 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:29:45,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:29:45,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:29:45,802 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 13:29:45,847 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:29:45,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:29:45,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:29:45,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:29:45,851 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:29:45,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:29:45,851 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:29:45,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:29:45,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:29:45,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:29:45,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:29:45,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:29:45,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:29:45,853 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:29:45,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:29:45,854 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:29:45,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:29:45,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:29:45,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:29:45,855 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:29:45,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:29:45,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:29:45,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:29:45,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:29:45,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:29:45,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:29:45,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:29:45,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:29:45,856 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:29:45,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:29:46,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:29:46,300 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:29:46,304 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:29:46,307 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:29:46,307 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:29:46,309 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test29-1.c [2020-09-04 13:29:46,400 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27f6d3dd3/1d24fc9f866346509181d4571a132812/FLAG6b018da3a [2020-09-04 13:29:46,959 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:29:46,960 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test29-1.c [2020-09-04 13:29:46,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27f6d3dd3/1d24fc9f866346509181d4571a132812/FLAG6b018da3a [2020-09-04 13:29:47,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27f6d3dd3/1d24fc9f866346509181d4571a132812 [2020-09-04 13:29:47,325 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:29:47,327 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:29:47,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:29:47,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:29:47,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:29:47,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:29:47" (1/1) ... [2020-09-04 13:29:47,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67ea52f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:29:47, skipping insertion in model container [2020-09-04 13:29:47,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:29:47" (1/1) ... [2020-09-04 13:29:47,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:29:47,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:29:47,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:29:47,637 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:29:47,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:29:47,670 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:29:47,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:29:47 WrapperNode [2020-09-04 13:29:47,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:29:47,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:29:47,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:29:47,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:29:47,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:29:47" (1/1) ... [2020-09-04 13:29:47,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:29:47" (1/1) ... [2020-09-04 13:29:47,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:29:47" (1/1) ... [2020-09-04 13:29:47,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:29:47" (1/1) ... [2020-09-04 13:29:47,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:29:47" (1/1) ... [2020-09-04 13:29:47,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:29:47" (1/1) ... [2020-09-04 13:29:47,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:29:47" (1/1) ... [2020-09-04 13:29:47,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:29:47,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:29:47,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:29:47,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:29:47,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:29:47" (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 13:29:47,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:29:47,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:29:47,870 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:29:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:29:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:29:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:29:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 13:29:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 13:29:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 13:29:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 13:29:47,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:29:47,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:29:48,142 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:29:48,145 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 13:29:48,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:29:48 BoogieIcfgContainer [2020-09-04 13:29:48,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:29:48,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:29:48,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:29:48,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:29:48,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:29:47" (1/3) ... [2020-09-04 13:29:48,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba81a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:29:48, skipping insertion in model container [2020-09-04 13:29:48,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:29:47" (2/3) ... [2020-09-04 13:29:48,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba81a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:29:48, skipping insertion in model container [2020-09-04 13:29:48,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:29:48" (3/3) ... [2020-09-04 13:29:48,176 INFO L109 eAbstractionObserver]: Analyzing ICFG test29-1.c [2020-09-04 13:29:48,190 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:29:48,199 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:29:48,231 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:29:48,256 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:29:48,257 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:29:48,257 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:29:48,257 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:29:48,257 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:29:48,257 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:29:48,257 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:29:48,257 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:29:48,276 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-09-04 13:29:48,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-04 13:29:48,283 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:29:48,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:29:48,284 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:29:48,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:29:48,291 INFO L82 PathProgramCache]: Analyzing trace with hash 668850033, now seen corresponding path program 1 times [2020-09-04 13:29:48,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:29:48,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981548581] [2020-09-04 13:29:48,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:29:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:48,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:29:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:48,592 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 13:29:48,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981548581] [2020-09-04 13:29:48,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:29:48,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:29:48,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207533455] [2020-09-04 13:29:48,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:29:48,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:29:48,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:29:48,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:29:48,618 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2020-09-04 13:29:48,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:29:48,741 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2020-09-04 13:29:48,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 13:29:48,744 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-04 13:29:48,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:29:48,755 INFO L225 Difference]: With dead ends: 34 [2020-09-04 13:29:48,756 INFO L226 Difference]: Without dead ends: 21 [2020-09-04 13:29:48,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:29:48,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-09-04 13:29:48,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2020-09-04 13:29:48,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-09-04 13:29:48,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-09-04 13:29:48,798 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2020-09-04 13:29:48,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:29:48,798 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-09-04 13:29:48,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:29:48,799 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-09-04 13:29:48,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-04 13:29:48,800 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:29:48,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:29:48,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:29:48,801 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:29:48,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:29:48,801 INFO L82 PathProgramCache]: Analyzing trace with hash 667002991, now seen corresponding path program 1 times [2020-09-04 13:29:48,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:29:48,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081620084] [2020-09-04 13:29:48,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:29:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:48,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:29:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:48,918 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 13:29:48,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081620084] [2020-09-04 13:29:48,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:29:48,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 13:29:48,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212680021] [2020-09-04 13:29:48,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 13:29:48,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:29:48,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 13:29:48,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 13:29:48,923 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 7 states. [2020-09-04 13:29:49,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:29:49,017 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2020-09-04 13:29:49,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 13:29:49,017 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-09-04 13:29:49,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:29:49,018 INFO L225 Difference]: With dead ends: 22 [2020-09-04 13:29:49,019 INFO L226 Difference]: Without dead ends: 14 [2020-09-04 13:29:49,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-04 13:29:49,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-09-04 13:29:49,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-09-04 13:29:49,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-09-04 13:29:49,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-09-04 13:29:49,025 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2020-09-04 13:29:49,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:29:49,025 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-09-04 13:29:49,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 13:29:49,025 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-09-04 13:29:49,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-04 13:29:49,026 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:29:49,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:29:49,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:29:49,027 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:29:49,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:29:49,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1851109901, now seen corresponding path program 1 times [2020-09-04 13:29:49,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:29:49,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278635679] [2020-09-04 13:29:49,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:29:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:29:49,052 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:29:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:29:49,072 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:29:49,100 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 13:29:49,101 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 13:29:49,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 13:29:49,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:29:49 BoogieIcfgContainer [2020-09-04 13:29:49,132 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:29:49,135 INFO L168 Benchmark]: Toolchain (without parser) took 1806.81 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.3 MB in the beginning and 112.1 MB in the end (delta: -8.8 MB). Peak memory consumption was 54.7 MB. Max. memory is 7.1 GB. [2020-09-04 13:29:49,136 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:29:49,137 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.41 ms. Allocated memory is still 141.0 MB. Free memory was 103.1 MB in the beginning and 93.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:29:49,138 INFO L168 Benchmark]: Boogie Preprocessor took 121.74 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 93.2 MB in the beginning and 183.0 MB in the end (delta: -89.7 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:29:49,139 INFO L168 Benchmark]: RCFGBuilder took 358.53 ms. Allocated memory is still 204.5 MB. Free memory was 182.3 MB in the beginning and 167.4 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:29:49,140 INFO L168 Benchmark]: TraceAbstraction took 975.91 ms. Allocated memory is still 204.5 MB. Free memory was 167.4 MB in the beginning and 112.1 MB in the end (delta: 55.3 MB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:29:49,144 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 342.41 ms. Allocated memory is still 141.0 MB. Free memory was 103.1 MB in the beginning and 93.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.74 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 93.2 MB in the beginning and 183.0 MB in the end (delta: -89.7 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 358.53 ms. Allocated memory is still 204.5 MB. Free memory was 182.3 MB in the beginning and 167.4 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 975.91 ms. Allocated memory is still 204.5 MB. Free memory was 167.4 MB in the beginning and 112.1 MB in the end (delta: 55.3 MB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 28]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] union dummy d1, d2; [L14] int n = __VERIFIER_nondet_int(); [L15] EXPR n ? &d1 : &d2 VAL [d1={3:0}, d2={2:0}, n=0, n ? &d1 : &d2={2:0}] [L15] union dummy *pd = n ? &d1 : &d2; [L16] d1.a = __VERIFIER_nondet_int() [L17] COND FALSE !(pd == &d1) [L20] pd->b = 0 VAL [d1={3:0}, d2={2:0}, n=0, pd={2:0}] [L22] pd == &d2 && d1.a != 0 [L22] EXPR d1.a [L22] pd == &d2 && d1.a != 0 VAL [d1={3:0}, d1.a=-1, d2={2:0}, n=0, pd={2:0}, pd == &d2 && d1.a != 0=1] [L22] COND TRUE pd == &d2 && d1.a != 0 [L28] __VERIFIER_error() VAL [d1={3:0}, d2={2:0}, n=0, pd={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 12 SDslu, 59 SDs, 0 SdLazy, 84 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 948 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 incorrect! Received shutdown request...