/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/recursive-with-pointer/simple-recursive.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:14:10,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:14:10,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:14:10,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:14:10,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:14:10,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:14:10,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:14:10,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:14:10,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:14:10,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:14:10,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:14:10,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:14:10,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:14:10,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:14:10,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:14:10,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:14:10,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:14:10,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:14:10,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:14:10,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:14:10,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:14:10,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:14:10,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:14:10,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:14:10,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:14:10,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:14:10,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:14:10,201 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:14:10,202 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-07 11:14:10,223 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:14:10,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:14:10,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:14:10,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:14:10,226 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:14:10,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:14:10,226 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:14:10,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:14:10,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:14:10,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:14:10,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:14:10,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:14:10,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:14:10,229 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:14:10,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:14:10,229 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:14:10,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:14:10,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:14:10,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:14:10,230 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:14:10,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:14:10,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:14:10,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:14:10,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:14:10,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:14:10,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:14:10,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:14:10,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:14:10,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:14:10,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:14:10,480 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:14:10,492 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:14:10,496 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:14:10,497 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:14:10,497 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:14:10,498 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2020-07-07 11:14:10,573 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4b6ae61b/c6fe1a1d467a4b68acd75134d38465c0/FLAG96be7158e [2020-07-07 11:14:11,046 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:14:11,047 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2020-07-07 11:14:11,053 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4b6ae61b/c6fe1a1d467a4b68acd75134d38465c0/FLAG96be7158e [2020-07-07 11:14:11,471 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4b6ae61b/c6fe1a1d467a4b68acd75134d38465c0 [2020-07-07 11:14:11,480 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:14:11,481 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:14:11,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:14:11,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:14:11,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:14:11,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:14:11" (1/1) ... [2020-07-07 11:14:11,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d888753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:14:11, skipping insertion in model container [2020-07-07 11:14:11,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:14:11" (1/1) ... [2020-07-07 11:14:11,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:14:11,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:14:11,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:14:11,728 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:14:11,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:14:11,754 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:14:11,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:14:11 WrapperNode [2020-07-07 11:14:11,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:14:11,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:14:11,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:14:11,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:14:11,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:14:11" (1/1) ... [2020-07-07 11:14:11,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:14:11" (1/1) ... [2020-07-07 11:14:11,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:14:11" (1/1) ... [2020-07-07 11:14:11,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:14:11" (1/1) ... [2020-07-07 11:14:11,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:14:11" (1/1) ... [2020-07-07 11:14:11,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:14:11" (1/1) ... [2020-07-07 11:14:11,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:14:11" (1/1) ... [2020-07-07 11:14:11,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:14:11,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:14:11,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:14:11,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:14:11,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:14:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:14:11,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:14:11,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:14:11,921 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2020-07-07 11:14:11,921 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-07-07 11:14:11,921 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:14:11,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:14:11,921 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-07-07 11:14:11,921 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2020-07-07 11:14:11,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 11:14:11,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 11:14:11,922 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:14:11,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 11:14:11,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-07 11:14:11,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 11:14:11,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:14:11,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:14:12,147 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:14:12,147 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 11:14:12,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:14:12 BoogieIcfgContainer [2020-07-07 11:14:12,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:14:12,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:14:12,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:14:12,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:14:12,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:14:11" (1/3) ... [2020-07-07 11:14:12,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4ea1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:14:12, skipping insertion in model container [2020-07-07 11:14:12,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:14:11" (2/3) ... [2020-07-07 11:14:12,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4ea1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:14:12, skipping insertion in model container [2020-07-07 11:14:12,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:14:12" (3/3) ... [2020-07-07 11:14:12,162 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-recursive.c [2020-07-07 11:14:12,180 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:14:12,190 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:14:12,207 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:14:12,247 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:14:12,248 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:14:12,248 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:14:12,248 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:14:12,248 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:14:12,248 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:14:12,249 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:14:12,249 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:14:12,293 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-07 11:14:12,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-07 11:14:12,311 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:14:12,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:14:12,316 INFO L427 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:14:12,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:14:12,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1703201428, now seen corresponding path program 1 times [2020-07-07 11:14:12,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:14:12,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904162113] [2020-07-07 11:14:12,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:14:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:14:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:14:12,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:14:12,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904162113] [2020-07-07 11:14:12,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:14:12,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 11:14:12,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112009422] [2020-07-07 11:14:12,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 11:14:12,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:14:12,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 11:14:12,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:14:12,662 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 6 states. [2020-07-07 11:14:12,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:14:12,898 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-07-07 11:14:12,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:14:12,901 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-07-07 11:14:12,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:14:12,917 INFO L225 Difference]: With dead ends: 39 [2020-07-07 11:14:12,918 INFO L226 Difference]: Without dead ends: 18 [2020-07-07 11:14:12,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:14:12,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-07 11:14:12,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-07-07 11:14:12,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-07 11:14:12,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-07-07 11:14:12,981 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2020-07-07 11:14:12,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:14:12,982 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-07-07 11:14:12,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 11:14:12,983 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-07-07 11:14:12,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-07 11:14:12,984 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:14:12,985 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:14:12,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:14:12,985 INFO L427 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:14:12,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:14:12,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1207469216, now seen corresponding path program 1 times [2020-07-07 11:14:12,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:14:12,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850359444] [2020-07-07 11:14:12,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:14:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:14:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:14:13,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:14:13,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850359444] [2020-07-07 11:14:13,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287928656] [2020-07-07 11:14:13,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:14:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:14:13,264 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 37 conjunts are in the unsatisfiable core [2020-07-07 11:14:13,271 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:14:13,338 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-07 11:14:13,338 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:14:13,344 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:14:13,344 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:14:13,345 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-07 11:14:13,374 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-07 11:14:13,376 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:14:13,379 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:14:13,380 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:14:13,380 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-07 11:14:13,456 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-07-07 11:14:13,457 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:14:13,461 INFO L624 ElimStorePlain]: treesize reduction 6, result has 14.3 percent of original size [2020-07-07 11:14:13,461 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:14:13,462 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-07-07 11:14:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:14:13,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:14:13,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2020-07-07 11:14:13,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507278175] [2020-07-07 11:14:13,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-07 11:14:13,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:14:13,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-07 11:14:13,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-07-07 11:14:13,481 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 13 states. [2020-07-07 11:14:13,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:14:13,703 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-07-07 11:14:13,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-07 11:14:13,704 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-07-07 11:14:13,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:14:13,705 INFO L225 Difference]: With dead ends: 26 [2020-07-07 11:14:13,706 INFO L226 Difference]: Without dead ends: 23 [2020-07-07 11:14:13,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2020-07-07 11:14:13,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-07 11:14:13,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-07-07 11:14:13,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-07 11:14:13,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-07-07 11:14:13,715 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 16 [2020-07-07 11:14:13,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:14:13,715 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-07-07 11:14:13,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-07 11:14:13,715 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-07-07 11:14:13,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-07 11:14:13,716 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:14:13,716 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:14:13,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-07 11:14:13,931 INFO L427 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:14:13,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:14:13,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1866674708, now seen corresponding path program 2 times [2020-07-07 11:14:13,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:14:13,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710528098] [2020-07-07 11:14:13,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:14:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:14:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:14:14,140 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:14:14,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710528098] [2020-07-07 11:14:14,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226522047] [2020-07-07 11:14:14,141 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-07-07 11:14:14,192 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:14:14,192 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:14:14,194 INFO L264 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 58 conjunts are in the unsatisfiable core [2020-07-07 11:14:14,197 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:14:14,204 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-07 11:14:14,205 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:14:14,207 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:14:14,207 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:14:14,207 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-07 11:14:14,218 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-07 11:14:14,219 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:14:14,221 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:14:14,221 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:14:14,222 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-07 11:14:14,295 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-07 11:14:14,296 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:14:14,299 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:14:14,300 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:14:14,300 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-07 11:14:14,386 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-07-07 11:14:14,387 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:14:14,391 INFO L624 ElimStorePlain]: treesize reduction 6, result has 14.3 percent of original size [2020-07-07 11:14:14,392 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:14:14,392 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-07-07 11:14:14,394 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:14:14,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:14:14,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 21 [2020-07-07 11:14:14,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53373143] [2020-07-07 11:14:14,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-07 11:14:14,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:14:14,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-07 11:14:14,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2020-07-07 11:14:14,397 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2020-07-07 11:14:14,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:14:14,904 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-07-07 11:14:14,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 11:14:14,905 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2020-07-07 11:14:14,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:14:14,906 INFO L225 Difference]: With dead ends: 31 [2020-07-07 11:14:14,906 INFO L226 Difference]: Without dead ends: 28 [2020-07-07 11:14:14,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=143, Invalid=913, Unknown=0, NotChecked=0, Total=1056 [2020-07-07 11:14:14,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-07 11:14:14,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-07-07 11:14:14,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-07 11:14:14,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-07-07 11:14:14,914 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 21 [2020-07-07 11:14:14,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:14:14,915 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-07-07 11:14:14,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-07 11:14:14,915 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-07-07 11:14:14,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-07 11:14:14,916 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:14:14,916 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:14:15,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:14:15,119 INFO L427 AbstractCegarLoop]: === Iteration 4 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:14:15,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:14:15,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1116654880, now seen corresponding path program 3 times [2020-07-07 11:14:15,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:14:15,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232844167] [2020-07-07 11:14:15,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:14:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:14:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:14:15,414 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:14:15,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232844167] [2020-07-07 11:14:15,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845385592] [2020-07-07 11:14:15,415 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:14:15,456 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-07-07 11:14:15,456 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:14:15,457 INFO L264 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 39 conjunts are in the unsatisfiable core [2020-07-07 11:14:15,460 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:14:15,468 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-07-07 11:14:15,469 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:14:15,472 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:14:15,472 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:14:15,472 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:1 [2020-07-07 11:14:15,543 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-07 11:14:15,544 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:14:15,545 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:14:15,546 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:14:15,546 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-07 11:14:15,627 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-07-07 11:14:15,628 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:14:15,631 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:14:15,631 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:14:15,632 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:7 [2020-07-07 11:14:15,660 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-07 11:14:15,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:14:15,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9] total 25 [2020-07-07 11:14:15,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982225729] [2020-07-07 11:14:15,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-07 11:14:15,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:14:15,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-07 11:14:15,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2020-07-07 11:14:15,663 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 25 states. [2020-07-07 11:14:16,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:14:16,568 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-07-07 11:14:16,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-07 11:14:16,569 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 26 [2020-07-07 11:14:16,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:14:16,569 INFO L225 Difference]: With dead ends: 34 [2020-07-07 11:14:16,569 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 11:14:16,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=348, Invalid=2004, Unknown=0, NotChecked=0, Total=2352 [2020-07-07 11:14:16,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 11:14:16,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 11:14:16,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 11:14:16,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 11:14:16,573 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-07-07 11:14:16,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:14:16,573 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 11:14:16,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-07 11:14:16,574 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 11:14:16,574 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 11:14:16,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:14:16,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 11:14:17,072 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-07-07 11:14:17,201 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-07 11:14:17,202 INFO L264 CegarLoopResult]: 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)|)) [2020-07-07 11:14:17,202 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:14:17,202 INFO L268 CegarLoopResult]: For program point fooEXIT(lines 9 18) no Hoare annotation was computed. [2020-07-07 11:14:17,202 INFO L264 CegarLoopResult]: At program point fooENTRY(lines 9 18) the Hoare annotation is: (let ((.cse1 (select (select |old(#memory_int)| |foo_#in~p.base|) |foo_#in~p.offset|)) (.cse0 (select (select |#memory_int| |foo_#in~p.base|) |foo_#in~p.offset|))) (and (or (= 12 .cse0) (not (= 12 .cse1))) (or (<= .cse0 13) (not (<= .cse1 13))) (or (not (= 10 .cse1)) (= 10 .cse0)) (or (= 11 .cse0) (not (= 11 .cse1))) (or (not (<= .cse1 20)) (<= .cse0 20)))) [2020-07-07 11:14:17,202 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-07-07 11:14:17,203 INFO L268 CegarLoopResult]: For program point fooErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-07-07 11:14:17,203 INFO L268 CegarLoopResult]: For program point L12(lines 12 17) no Hoare annotation was computed. [2020-07-07 11:14:17,203 INFO L264 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (let ((.cse1 (select (select |old(#memory_int)| |foo_#in~p.base|) |foo_#in~p.offset|)) (.cse2 (select (select |#memory_int| foo_~p.base) foo_~p.offset)) (.cse0 (select (select |#memory_int| |foo_#in~p.base|) |foo_#in~p.offset|))) (and (or (<= .cse0 13) (not (<= .cse1 13))) (or (and (<= .cse0 12) (<= .cse2 12)) (not (= 12 .cse1))) (or (not (= 11 .cse1)) (and (= 11 .cse0) (= 11 .cse2))) (or (not (= 10 .cse1)) (and (= 10 .cse2) (= 10 .cse0))) (or (not (<= .cse1 20)) (and (<= .cse2 19) (<= .cse0 20))))) [2020-07-07 11:14:17,203 INFO L268 CegarLoopResult]: For program point L10(lines 10 17) no Hoare annotation was computed. [2020-07-07 11:14:17,204 INFO L268 CegarLoopResult]: For program point L10-1(lines 9 18) no Hoare annotation was computed. [2020-07-07 11:14:17,204 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:14:17,204 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 11:14:17,204 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 11:14:17,204 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-07 11:14:17,204 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 20 26) the Hoare annotation is: (= |#valid| |old(#valid)|) [2020-07-07 11:14:17,204 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 26) no Hoare annotation was computed. [2020-07-07 11:14:17,205 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (= 10 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset)) [2020-07-07 11:14:17,205 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 26) no Hoare annotation was computed. [2020-07-07 11:14:17,205 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-07-07 11:14:17,205 INFO L268 CegarLoopResult]: For program point plusFINAL(lines 4 7) no Hoare annotation was computed. [2020-07-07 11:14:17,205 INFO L264 CegarLoopResult]: At program point plusENTRY(lines 4 7) the Hoare annotation is: (let ((.cse1 (select (select |old(#memory_int)| |plus_#in~p.base|) |plus_#in~p.offset|)) (.cse0 (select (select |#memory_int| |plus_#in~p.base|) |plus_#in~p.offset|))) (and (or (<= .cse0 19) (not (<= .cse1 19))) (or (not (= 11 .cse1)) (= 11 .cse0)) (or (<= .cse0 12) (not (<= .cse1 12))) (or (not (= 10 .cse1)) (= 10 .cse0)))) [2020-07-07 11:14:17,205 INFO L268 CegarLoopResult]: For program point plusEXIT(lines 4 7) no Hoare annotation was computed. [2020-07-07 11:14:17,206 INFO L264 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: (let ((.cse1 (select (select |#memory_int| |plus_#in~p.base|) |plus_#in~p.offset|)) (.cse2 (select (select |#memory_int| plus_~p.base) plus_~p.offset)) (.cse0 (select (select |old(#memory_int)| |plus_#in~p.base|) |plus_#in~p.offset|))) (and (or (not (<= .cse0 12)) (and (<= .cse1 19) (<= .cse2 13))) (or (not (<= .cse0 19)) (<= .cse2 20)) (or (not (= 11 .cse0)) (and (= 12 .cse2) (<= .cse1 12))) (or (and (= 11 .cse1) (= 11 .cse2)) (not (= 10 .cse0))))) [2020-07-07 11:14:17,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:14:17 BoogieIcfgContainer [2020-07-07 11:14:17,212 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:14:17,214 INFO L168 Benchmark]: Toolchain (without parser) took 5733.07 ms. Allocated memory was 138.4 MB in the beginning and 276.3 MB in the end (delta: 137.9 MB). Free memory was 100.5 MB in the beginning and 192.9 MB in the end (delta: -92.4 MB). Peak memory consumption was 113.1 MB. Max. memory is 7.1 GB. [2020-07-07 11:14:17,215 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 11:14:17,216 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.04 ms. Allocated memory is still 138.4 MB. Free memory was 100.3 MB in the beginning and 90.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-07 11:14:17,217 INFO L168 Benchmark]: Boogie Preprocessor took 108.45 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 90.7 MB in the beginning and 180.5 MB in the end (delta: -89.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-07 11:14:17,217 INFO L168 Benchmark]: RCFGBuilder took 288.36 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 166.1 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-07 11:14:17,218 INFO L168 Benchmark]: TraceAbstraction took 5058.07 ms. Allocated memory was 202.4 MB in the beginning and 276.3 MB in the end (delta: 73.9 MB). Free memory was 165.5 MB in the beginning and 192.9 MB in the end (delta: -27.5 MB). Peak memory consumption was 114.1 MB. Max. memory is 7.1 GB. [2020-07-07 11:14:17,222 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 273.04 ms. Allocated memory is still 138.4 MB. Free memory was 100.3 MB in the beginning and 90.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.45 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 90.7 MB in the beginning and 180.5 MB in the end (delta: -89.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 288.36 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 166.1 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5058.07 ms. Allocated memory was 202.4 MB in the beginning and 276.3 MB in the end (delta: 73.9 MB). Free memory was 165.5 MB in the beginning and 192.9 MB in the end (delta: -27.5 MB). Peak memory consumption was 114.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 50 SDtfs, 44 SDslu, 240 SDs, 0 SdLazy, 636 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 157 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 25 PreInvPairs, 25 NumberOfFragments, 370 HoareAnnotationTreeSize, 25 FomulaSimplifications, 700 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 291 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 137 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 11920 SizeOfPredicates, 42 NumberOfNonLiveVariables, 333 ConjunctsInSsa, 134 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 20/64 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...