/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test21-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 13:29:29,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 13:29:29,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 13:29:29,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 13:29:29,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 13:29:29,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 13:29:29,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 13:29:29,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 13:29:29,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 13:29:29,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 13:29:29,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 13:29:29,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 13:29:29,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 13:29:29,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 13:29:29,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 13:29:29,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 13:29:29,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 13:29:29,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 13:29:29,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 13:29:29,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 13:29:29,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 13:29:29,140 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 13:29:29,141 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 13:29:29,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 13:29:29,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 13:29:29,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 13:29:29,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 13:29:29,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 13:29:29,169 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 13:29:29,187 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 13:29:29,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 13:29:29,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 13:29:29,190 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 13:29:29,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 13:29:29,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 13:29:29,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 13:29:29,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 13:29:29,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 13:29:29,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 13:29:29,192 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 13:29:29,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 13:29:29,193 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 13:29:29,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 13:29:29,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 13:29:29,194 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 13:29:29,194 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 13:29:29,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 13:29:29,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:29:29,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 13:29:29,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 13:29:29,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 13:29:29,195 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 13:29:29,562 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 13:29:29,575 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 13:29:29,579 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 13:29:29,580 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 13:29:29,581 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 13:29:29,581 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test21-1.c [2020-07-17 13:29:29,656 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e8e63b15/8cf9569c99634e1e8ece545ff4cf4331/FLAGfa93ac9e3 [2020-07-17 13:29:30,080 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 13:29:30,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test21-1.c [2020-07-17 13:29:30,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e8e63b15/8cf9569c99634e1e8ece545ff4cf4331/FLAGfa93ac9e3 [2020-07-17 13:29:30,463 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e8e63b15/8cf9569c99634e1e8ece545ff4cf4331 [2020-07-17 13:29:30,472 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 13:29:30,475 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 13:29:30,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 13:29:30,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 13:29:30,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 13:29:30,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:29:30" (1/1) ... [2020-07-17 13:29:30,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5035b21d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:30, skipping insertion in model container [2020-07-17 13:29:30,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:29:30" (1/1) ... [2020-07-17 13:29:30,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 13:29:30,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 13:29:30,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:29:30,785 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 13:29:30,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:29:30,829 INFO L208 MainTranslator]: Completed translation [2020-07-17 13:29:30,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:30 WrapperNode [2020-07-17 13:29:30,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 13:29:30,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 13:29:30,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 13:29:30,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 13:29:30,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:30" (1/1) ... [2020-07-17 13:29:30,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:30" (1/1) ... [2020-07-17 13:29:30,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:30" (1/1) ... [2020-07-17 13:29:30,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:30" (1/1) ... [2020-07-17 13:29:30,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:30" (1/1) ... [2020-07-17 13:29:30,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:30" (1/1) ... [2020-07-17 13:29:30,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:30" (1/1) ... [2020-07-17 13:29:30,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 13:29:30,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 13:29:30,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 13:29:30,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 13:29:30,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:30" (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 [2020-07-17 13:29:31,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 13:29:31,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 13:29:31,012 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-07-17 13:29:31,013 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-07-17 13:29:31,013 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-07-17 13:29:31,013 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 13:29:31,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 13:29:31,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 13:29:31,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-17 13:29:31,014 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-17 13:29:31,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 13:29:31,014 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-07-17 13:29:31,014 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-17 13:29:31,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 13:29:31,014 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 13:29:31,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 13:29:31,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 13:29:31,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-17 13:29:31,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 13:29:31,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 13:29:31,304 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 13:29:31,305 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 13:29:31,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:29:31 BoogieIcfgContainer [2020-07-17 13:29:31,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 13:29:31,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 13:29:31,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 13:29:31,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 13:29:31,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 01:29:30" (1/3) ... [2020-07-17 13:29:31,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb211d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:29:31, skipping insertion in model container [2020-07-17 13:29:31,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:30" (2/3) ... [2020-07-17 13:29:31,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb211d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:29:31, skipping insertion in model container [2020-07-17 13:29:31,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:29:31" (3/3) ... [2020-07-17 13:29:31,321 INFO L109 eAbstractionObserver]: Analyzing ICFG test21-1.c [2020-07-17 13:29:31,334 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 13:29:31,346 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 13:29:31,373 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 13:29:31,418 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 13:29:31,419 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 13:29:31,419 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 13:29:31,419 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 13:29:31,419 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 13:29:31,419 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 13:29:31,420 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 13:29:31,420 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 13:29:31,441 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-07-17 13:29:31,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-17 13:29:31,453 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:29:31,454 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:29:31,455 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:29:31,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:29:31,460 INFO L82 PathProgramCache]: Analyzing trace with hash -487286935, now seen corresponding path program 1 times [2020-07-17 13:29:31,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:29:31,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664821727] [2020-07-17 13:29:31,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:29:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:29:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:29:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:29:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:29:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:29:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:29:32,165 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-17 13:29:32,181 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:29:32,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664821727] [2020-07-17 13:29:32,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:29:32,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-07-17 13:29:32,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236947024] [2020-07-17 13:29:32,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-17 13:29:32,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:29:32,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-17 13:29:32,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-07-17 13:29:32,209 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 16 states. [2020-07-17 13:29:33,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:29:33,892 INFO L93 Difference]: Finished difference Result 96 states and 105 transitions. [2020-07-17 13:29:33,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-17 13:29:33,894 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 63 [2020-07-17 13:29:33,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:29:33,902 INFO L225 Difference]: With dead ends: 96 [2020-07-17 13:29:33,902 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 13:29:33,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=173, Invalid=1017, Unknown=0, NotChecked=0, Total=1190 [2020-07-17 13:29:33,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 13:29:33,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 13:29:33,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 13:29:33,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 13:29:33,935 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2020-07-17 13:29:33,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:29:33,935 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 13:29:33,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-17 13:29:33,936 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 13:29:33,936 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 13:29:33,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 13:29:33,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 13:29:34,878 INFO L264 CegarLoopResult]: At program point initENTRY(lines 11 18) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-07-17 13:29:34,878 INFO L271 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: true [2020-07-17 13:29:34,878 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-07-17 13:29:34,879 INFO L271 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: true [2020-07-17 13:29:34,879 INFO L271 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: true [2020-07-17 13:29:34,879 INFO L271 CegarLoopResult]: At program point L17-2(line 17) the Hoare annotation is: true [2020-07-17 13:29:34,879 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-07-17 13:29:34,879 INFO L271 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: true [2020-07-17 13:29:34,879 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-07-17 13:29:34,879 INFO L271 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: true [2020-07-17 13:29:34,880 INFO L271 CegarLoopResult]: At program point initEXIT(lines 11 18) the Hoare annotation is: true [2020-07-17 13:29:34,880 INFO L271 CegarLoopResult]: At program point L13-1(line 13) the Hoare annotation is: true [2020-07-17 13:29:34,880 INFO L271 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: true [2020-07-17 13:29:34,880 INFO L271 CegarLoopResult]: At program point initFINAL(lines 11 18) the Hoare annotation is: true [2020-07-17 13:29:34,880 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 13:29:34,880 INFO L271 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-07-17 13:29:34,880 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 9) the Hoare annotation is: true [2020-07-17 13:29:34,881 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(~#d2~0.base)| |~#d2~0.base|) (= |#valid| |old(#valid)|) (= |old(#NULL.base)| |#NULL.base|) (= |old(~#d2~0.offset)| |~#d2~0.offset|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(~#d1~0.base)| |~#d1~0.base|) (= |old(~#d1~0.offset)| |~#d1~0.offset|) (= |old(#length)| |#length|)) [2020-07-17 13:29:34,881 INFO L271 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: true [2020-07-17 13:29:34,881 INFO L271 CegarLoopResult]: At program point L9-1(line 9) the Hoare annotation is: true [2020-07-17 13:29:34,881 INFO L271 CegarLoopResult]: At program point L9-2(line 9) the Hoare annotation is: true [2020-07-17 13:29:34,881 INFO L271 CegarLoopResult]: At program point L9-3(line 9) the Hoare annotation is: true [2020-07-17 13:29:34,882 INFO L271 CegarLoopResult]: At program point L9-4(line 9) the Hoare annotation is: true [2020-07-17 13:29:34,882 INFO L271 CegarLoopResult]: At program point L9-5(line 9) the Hoare annotation is: true [2020-07-17 13:29:34,882 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-17 13:29:34,882 INFO L271 CegarLoopResult]: At program point L22-5(line 22) the Hoare annotation is: true [2020-07-17 13:29:34,882 INFO L271 CegarLoopResult]: At program point get_dummyFINAL(lines 20 23) the Hoare annotation is: true [2020-07-17 13:29:34,882 INFO L271 CegarLoopResult]: At program point get_dummyENTRY(lines 20 23) the Hoare annotation is: true [2020-07-17 13:29:34,883 INFO L271 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-07-17 13:29:34,883 INFO L271 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: true [2020-07-17 13:29:34,883 INFO L271 CegarLoopResult]: At program point get_dummyEXIT(lines 20 23) the Hoare annotation is: true [2020-07-17 13:29:34,883 INFO L271 CegarLoopResult]: At program point L22-3(line 22) the Hoare annotation is: true [2020-07-17 13:29:34,883 INFO L271 CegarLoopResult]: At program point L22-4(line 22) the Hoare annotation is: true [2020-07-17 13:29:34,883 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-17 13:29:34,884 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 13:29:34,884 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 13:29:34,884 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-17 13:29:34,884 INFO L271 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: true [2020-07-17 13:29:34,884 INFO L264 CegarLoopResult]: At program point L35-2(lines 35 37) the Hoare annotation is: (and (= main_~pd2~0.offset main_~pd1~0.offset) (<= 1 |main_#t~ret10|) (= main_~pd2~0.base main_~pd1~0.base)) [2020-07-17 13:29:34,884 INFO L271 CegarLoopResult]: At program point L33-1(line 33) the Hoare annotation is: true [2020-07-17 13:29:34,885 INFO L264 CegarLoopResult]: At program point L35-3(line 35) the Hoare annotation is: false [2020-07-17 13:29:34,885 INFO L271 CegarLoopResult]: At program point L33-2(line 33) the Hoare annotation is: true [2020-07-17 13:29:34,885 INFO L264 CegarLoopResult]: At program point L35-4(line 35) the Hoare annotation is: (and (= main_~pd2~0.offset main_~pd1~0.offset) (<= 1 |main_#t~ret10|) (= main_~pd2~0.base main_~pd1~0.base)) [2020-07-17 13:29:34,885 INFO L271 CegarLoopResult]: At program point L33-3(line 33) the Hoare annotation is: true [2020-07-17 13:29:34,885 INFO L271 CegarLoopResult]: At program point L33-4(line 33) the Hoare annotation is: true [2020-07-17 13:29:34,886 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 30 44) the Hoare annotation is: true [2020-07-17 13:29:34,886 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 30 44) the Hoare annotation is: true [2020-07-17 13:29:34,886 INFO L264 CegarLoopResult]: At program point L36(lines 31 44) the Hoare annotation is: false [2020-07-17 13:29:34,886 INFO L271 CegarLoopResult]: At program point L34(lines 34 38) the Hoare annotation is: true [2020-07-17 13:29:34,886 INFO L271 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: true [2020-07-17 13:29:34,886 INFO L271 CegarLoopResult]: At program point L34-2(lines 34 38) the Hoare annotation is: true [2020-07-17 13:29:34,887 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) the Hoare annotation is: false [2020-07-17 13:29:34,887 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 30 44) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-07-17 13:29:34,887 INFO L264 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: false [2020-07-17 13:29:34,887 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (and (= main_~pd2~0.offset main_~pd1~0.offset) (= main_~pd2~0.base main_~pd1~0.base)) [2020-07-17 13:29:34,887 INFO L264 CegarLoopResult]: At program point L35-1(line 35) the Hoare annotation is: (and (= main_~pd2~0.offset main_~pd1~0.offset) (<= 1 |main_#t~ret10|) (= main_~pd2~0.base main_~pd1~0.base)) [2020-07-17 13:29:34,888 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 25 28) the Hoare annotation is: true [2020-07-17 13:29:34,888 INFO L264 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (let ((.cse0 (= check_~s1.base check_~s2.base))) (and (= |check_#in~s1.base| check_~s1.base) (or .cse0 (not (= |check_#in~s1.base| |check_#in~s2.base|))) (= check_~s1.offset |check_#in~s1.offset|) (or (not (= |check_#in~s1.offset| |check_#in~s2.offset|)) (not .cse0) (= check_~s1.offset check_~s2.offset)))) [2020-07-17 13:29:34,888 INFO L264 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: (let ((.cse1 (not (= |check_#in~s1.base| |check_#in~s2.base|))) (.cse2 (not (= |check_#in~s1.offset| |check_#in~s2.offset|))) (.cse0 (= check_~s1.base check_~s2.base))) (and (= |check_#in~s1.base| check_~s1.base) (or .cse0 .cse1) (= check_~s1.offset |check_#in~s1.offset|) (or (= |check_#t~mem6| (select (select |#memory_int| check_~s2.base) check_~s2.offset)) .cse1 .cse2) (or .cse2 (not .cse0) (= check_~s1.offset check_~s2.offset)))) [2020-07-17 13:29:34,888 INFO L264 CegarLoopResult]: At program point L25(lines 25 28) the Hoare annotation is: (and (= |check_#in~s1.base| check_~s1.base) (= check_~s1.offset |check_#in~s1.offset|)) [2020-07-17 13:29:34,889 INFO L264 CegarLoopResult]: At program point L27-2(line 27) the Hoare annotation is: (let ((.cse0 (not (= |check_#in~s1.base| |check_#in~s2.base|))) (.cse1 (not (= |check_#in~s1.offset| |check_#in~s2.offset|))) (.cse2 (= check_~s1.base check_~s2.base))) (and (or (= |check_#t~mem7| |check_#t~mem6|) .cse0 .cse1) (= |check_#in~s1.base| check_~s1.base) (or .cse2 .cse0) (= check_~s1.offset |check_#in~s1.offset|) (or (= |check_#t~mem6| (select (select |#memory_int| check_~s2.base) check_~s2.offset)) .cse0 .cse1) (or .cse1 (not .cse2) (= check_~s1.offset check_~s2.offset)))) [2020-07-17 13:29:34,889 INFO L264 CegarLoopResult]: At program point L27-3(line 27) the Hoare annotation is: (let ((.cse0 (not (= |check_#in~s1.base| |check_#in~s2.base|))) (.cse1 (not (= |check_#in~s1.offset| |check_#in~s2.offset|))) (.cse2 (= check_~s1.base check_~s2.base))) (and (or (= |check_#t~mem7| |check_#t~mem6|) .cse0 .cse1) (= |check_#in~s1.base| check_~s1.base) (or .cse2 .cse0) (= check_~s1.offset |check_#in~s1.offset|) (or .cse0 .cse1 (<= 1 |check_#res|)) (or (= |check_#t~mem6| (select (select |#memory_int| check_~s2.base) check_~s2.offset)) .cse0 .cse1) (or .cse1 (not .cse2) (= check_~s1.offset check_~s2.offset)))) [2020-07-17 13:29:34,889 INFO L264 CegarLoopResult]: At program point L27-4(line 27) the Hoare annotation is: (let ((.cse1 (not (= |check_#in~s1.base| |check_#in~s2.base|))) (.cse2 (not (= |check_#in~s1.offset| |check_#in~s2.offset|))) (.cse0 (= check_~s1.base check_~s2.base))) (and (= |check_#in~s1.base| check_~s1.base) (or .cse0 .cse1) (= check_~s1.offset |check_#in~s1.offset|) (or .cse1 .cse2 (<= 1 |check_#res|)) (or .cse2 (not .cse0) (= check_~s1.offset check_~s2.offset)))) [2020-07-17 13:29:34,889 INFO L264 CegarLoopResult]: At program point checkFINAL(lines 25 28) the Hoare annotation is: (let ((.cse1 (not (= |check_#in~s1.base| |check_#in~s2.base|))) (.cse2 (not (= |check_#in~s1.offset| |check_#in~s2.offset|))) (.cse0 (= check_~s1.base check_~s2.base))) (and (= |check_#in~s1.base| check_~s1.base) (or .cse0 .cse1) (= check_~s1.offset |check_#in~s1.offset|) (or .cse1 .cse2 (<= 1 |check_#res|)) (or .cse2 (not .cse0) (= check_~s1.offset check_~s2.offset)))) [2020-07-17 13:29:34,889 INFO L264 CegarLoopResult]: At program point checkEXIT(lines 25 28) the Hoare annotation is: (let ((.cse1 (not (= |check_#in~s1.base| |check_#in~s2.base|))) (.cse2 (not (= |check_#in~s1.offset| |check_#in~s2.offset|))) (.cse0 (= check_~s1.base check_~s2.base))) (and (= |check_#in~s1.base| check_~s1.base) (or .cse0 .cse1) (= check_~s1.offset |check_#in~s1.offset|) (or .cse1 .cse2 (<= 1 |check_#res|)) (or .cse2 (not .cse0) (= check_~s1.offset check_~s2.offset)))) [2020-07-17 13:29:34,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 01:29:34 BoogieIcfgContainer [2020-07-17 13:29:34,911 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 13:29:34,914 INFO L168 Benchmark]: Toolchain (without parser) took 4439.17 ms. Allocated memory was 148.4 MB in the beginning and 270.0 MB in the end (delta: 121.6 MB). Free memory was 106.5 MB in the beginning and 187.3 MB in the end (delta: -80.8 MB). Peak memory consumption was 96.8 MB. Max. memory is 7.1 GB. [2020-07-17 13:29:34,915 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 148.4 MB. Free memory was 124.9 MB in the beginning and 124.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 13:29:34,916 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.51 ms. Allocated memory is still 148.4 MB. Free memory was 106.1 MB in the beginning and 95.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-17 13:29:34,917 INFO L168 Benchmark]: Boogie Preprocessor took 121.29 ms. Allocated memory was 148.4 MB in the beginning and 202.4 MB in the end (delta: 54.0 MB). Free memory was 95.9 MB in the beginning and 180.5 MB in the end (delta: -84.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-17 13:29:34,918 INFO L168 Benchmark]: RCFGBuilder took 359.89 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 161.0 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-07-17 13:29:34,919 INFO L168 Benchmark]: TraceAbstraction took 3598.35 ms. Allocated memory was 202.4 MB in the beginning and 270.0 MB in the end (delta: 67.6 MB). Free memory was 160.4 MB in the beginning and 187.3 MB in the end (delta: -26.9 MB). Peak memory consumption was 96.7 MB. Max. memory is 7.1 GB. [2020-07-17 13:29:34,923 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 148.4 MB. Free memory was 124.9 MB in the beginning and 124.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 353.51 ms. Allocated memory is still 148.4 MB. Free memory was 106.1 MB in the beginning and 95.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.29 ms. Allocated memory was 148.4 MB in the beginning and 202.4 MB in the end (delta: 54.0 MB). Free memory was 95.9 MB in the beginning and 180.5 MB in the end (delta: -84.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 359.89 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 161.0 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3598.35 ms. Allocated memory was 202.4 MB in the beginning and 270.0 MB in the end (delta: 67.6 MB). Free memory was 160.4 MB in the beginning and 187.3 MB in the end (delta: -26.9 MB). Peak memory consumption was 96.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 42]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 11]: Procedure Contract for init Derived contract for procedure init: 1 - ProcedureContractResult [Line: 20]: Procedure Contract for get_dummy Derived contract for procedure get_dummy: 1 - ProcedureContractResult [Line: 30]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 25]: Procedure Contract for check Derived contract for procedure check: (((s1 == s1 && (s1 == s2 || !(s1 == s2))) && s1 == s1) && ((!(s1 == s2) || !(s1 == s2)) || 1 <= \result)) && ((!(s1 == s2) || !(s1 == s2)) || s1 == s2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 1, TraceHistogramMax: 2, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 133 SDslu, 85 SDs, 0 SdLazy, 737 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 65 LocationsWithAnnotation, 90 PreInvPairs, 131 NumberOfFragments, 436 HoareAnnotationTreeSize, 90 FomulaSimplifications, 1337 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 65 FomulaSimplificationsInter, 1181 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...