/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/test22-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 13:29:29,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 13:29:29,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 13:29:29,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 13:29:29,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 13:29:29,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 13:29:29,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 13:29:29,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 13:29:29,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 13:29:29,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 13:29:29,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 13:29:29,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 13:29:29,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 13:29:29,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 13:29:29,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 13:29:29,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 13:29:29,722 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 13:29:29,723 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 13:29:29,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 13:29:29,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 13:29:29,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 13:29:29,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 13:29:29,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 13:29:29,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 13:29:29,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 13:29:29,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 13:29:29,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 13:29:29,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 13:29:29,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 13:29:29,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-07-17 13:29:29,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 13:29:29,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 13:29:29,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 13:29:29,745 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 13:29:29,760 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 13:29:29,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 13:29:29,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 13:29:29,762 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 13:29:29,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 13:29:29,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 13:29:29,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 13:29:29,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 13:29:29,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 13:29:29,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 13:29:29,764 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 13:29:29,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 13:29:29,764 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 13:29:29,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 13:29:29,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 13:29:29,765 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 13:29:29,765 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 13:29:29,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 13:29:29,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:29:29,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 13:29:29,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 13:29:29,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 13:29:29,766 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 13:29:30,048 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 13:29:30,061 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 13:29:30,065 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 13:29:30,067 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 13:29:30,067 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 13:29:30,068 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test22-2.c [2020-07-17 13:29:30,144 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d11bac9ad/28cae231a3074b8eae661c8d015f6c6c/FLAGa6ccb4486 [2020-07-17 13:29:30,604 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 13:29:30,605 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test22-2.c [2020-07-17 13:29:30,612 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d11bac9ad/28cae231a3074b8eae661c8d015f6c6c/FLAGa6ccb4486 [2020-07-17 13:29:30,952 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d11bac9ad/28cae231a3074b8eae661c8d015f6c6c [2020-07-17 13:29:30,962 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 13:29:30,965 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 13:29:30,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 13:29:30,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 13:29:30,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 13:29:30,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:29:30" (1/1) ... [2020-07-17 13:29:30,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d420572 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 13:29:30,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:29:30" (1/1) ... [2020-07-17 13:29:30,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 13:29:31,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 13:29:31,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:29:31,185 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 13:29:31,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:29:31,224 INFO L208 MainTranslator]: Completed translation [2020-07-17 13:29:31,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:31 WrapperNode [2020-07-17 13:29:31,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 13:29:31,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 13:29:31,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 13:29:31,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 13:29:31,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:31" (1/1) ... [2020-07-17 13:29:31,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:31" (1/1) ... [2020-07-17 13:29:31,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:31" (1/1) ... [2020-07-17 13:29:31,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:31" (1/1) ... [2020-07-17 13:29:31,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:31" (1/1) ... [2020-07-17 13:29:31,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:31" (1/1) ... [2020-07-17 13:29:31,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:31" (1/1) ... [2020-07-17 13:29:31,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 13:29:31,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 13:29:31,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 13:29:31,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 13:29:31,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:31" (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 13:29:31,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 13:29:31,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 13:29:31,425 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-07-17 13:29:31,426 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-07-17 13:29:31,426 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-07-17 13:29:31,426 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 13:29:31,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 13:29:31,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 13:29:31,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-17 13:29:31,427 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-17 13:29:31,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 13:29:31,428 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-07-17 13:29:31,428 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-17 13:29:31,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 13:29:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 13:29:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 13:29:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 13:29:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-17 13:29:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 13:29:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 13:29:31,837 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 13:29:31,837 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 13:29:31,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:29:31 BoogieIcfgContainer [2020-07-17 13:29:31,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 13:29:31,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 13:29:31,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 13:29:31,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 13:29:31,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 01:29:30" (1/3) ... [2020-07-17 13:29:31,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27db7586 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 13:29:31,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:31" (2/3) ... [2020-07-17 13:29:31,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27db7586 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 13:29:31,849 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 13:29:31,850 INFO L109 eAbstractionObserver]: Analyzing ICFG test22-2.c [2020-07-17 13:29:31,860 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 13:29:31,868 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 13:29:31,881 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 13:29:31,902 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 13:29:31,902 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 13:29:31,903 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 13:29:31,903 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 13:29:31,903 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 13:29:31,903 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 13:29:31,903 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 13:29:31,903 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 13:29:31,919 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-07-17 13:29:31,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-17 13:29:31,932 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:29:31,933 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:29:31,934 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:29:31,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:29:31,939 INFO L82 PathProgramCache]: Analyzing trace with hash 2026025413, now seen corresponding path program 1 times [2020-07-17 13:29:31,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:29:31,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912963529] [2020-07-17 13:29:31,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:29:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:29:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:29:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:29:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:29:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:29:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:29:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:29:32,358 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-07-17 13:29:32,407 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:29:32,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912963529] [2020-07-17 13:29:32,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:29:32,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 13:29:32,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847741568] [2020-07-17 13:29:32,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 13:29:32,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:29:32,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 13:29:32,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-17 13:29:32,438 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 6 states. [2020-07-17 13:29:32,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:29:32,963 INFO L93 Difference]: Finished difference Result 106 states and 114 transitions. [2020-07-17 13:29:32,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-17 13:29:32,965 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-07-17 13:29:32,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:29:32,973 INFO L225 Difference]: With dead ends: 106 [2020-07-17 13:29:32,974 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 13:29:32,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-07-17 13:29:32,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 13:29:33,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 13:29:33,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 13:29:33,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 13:29:33,007 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2020-07-17 13:29:33,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:29:33,007 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 13:29:33,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 13:29:33,008 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 13:29:33,008 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 13:29:33,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 13:29:33,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 13:29:33,516 INFO L264 CegarLoopResult]: At program point initENTRY(lines 11 18) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-07-17 13:29:33,516 INFO L271 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: true [2020-07-17 13:29:33,517 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-07-17 13:29:33,517 INFO L271 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: true [2020-07-17 13:29:33,517 INFO L271 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: true [2020-07-17 13:29:33,517 INFO L271 CegarLoopResult]: At program point L17-2(line 17) the Hoare annotation is: true [2020-07-17 13:29:33,518 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-07-17 13:29:33,518 INFO L271 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: true [2020-07-17 13:29:33,518 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-07-17 13:29:33,518 INFO L271 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: true [2020-07-17 13:29:33,518 INFO L271 CegarLoopResult]: At program point initEXIT(lines 11 18) the Hoare annotation is: true [2020-07-17 13:29:33,519 INFO L271 CegarLoopResult]: At program point L13-1(line 13) the Hoare annotation is: true [2020-07-17 13:29:33,519 INFO L271 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: true [2020-07-17 13:29:33,519 INFO L271 CegarLoopResult]: At program point initFINAL(lines 11 18) the Hoare annotation is: true [2020-07-17 13:29:33,519 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 13:29:33,519 INFO L271 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-07-17 13:29:33,520 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 9) the Hoare annotation is: true [2020-07-17 13:29:33,520 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 13:29:33,520 INFO L271 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: true [2020-07-17 13:29:33,520 INFO L271 CegarLoopResult]: At program point L9-1(line 9) the Hoare annotation is: true [2020-07-17 13:29:33,520 INFO L271 CegarLoopResult]: At program point L9-2(line 9) the Hoare annotation is: true [2020-07-17 13:29:33,521 INFO L271 CegarLoopResult]: At program point L9-3(line 9) the Hoare annotation is: true [2020-07-17 13:29:33,521 INFO L271 CegarLoopResult]: At program point L9-4(line 9) the Hoare annotation is: true [2020-07-17 13:29:33,521 INFO L271 CegarLoopResult]: At program point L9-5(line 9) the Hoare annotation is: true [2020-07-17 13:29:33,521 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-17 13:29:33,522 INFO L271 CegarLoopResult]: At program point L22-5(line 22) the Hoare annotation is: true [2020-07-17 13:29:33,522 INFO L271 CegarLoopResult]: At program point get_dummyFINAL(lines 20 23) the Hoare annotation is: true [2020-07-17 13:29:33,522 INFO L271 CegarLoopResult]: At program point get_dummyENTRY(lines 20 23) the Hoare annotation is: true [2020-07-17 13:29:33,522 INFO L271 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-07-17 13:29:33,522 INFO L271 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: true [2020-07-17 13:29:33,522 INFO L271 CegarLoopResult]: At program point get_dummyEXIT(lines 20 23) the Hoare annotation is: true [2020-07-17 13:29:33,523 INFO L271 CegarLoopResult]: At program point L22-3(line 22) the Hoare annotation is: true [2020-07-17 13:29:33,523 INFO L271 CegarLoopResult]: At program point L22-4(line 22) the Hoare annotation is: true [2020-07-17 13:29:33,523 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-17 13:29:33,523 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 13:29:33,523 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 13:29:33,524 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-17 13:29:33,524 INFO L271 CegarLoopResult]: At program point L35-2(line 35) the Hoare annotation is: true [2020-07-17 13:29:33,524 INFO L271 CegarLoopResult]: At program point L35-3(line 35) the Hoare annotation is: true [2020-07-17 13:29:33,524 INFO L271 CegarLoopResult]: At program point L35-5(lines 35 44) the Hoare annotation is: true [2020-07-17 13:29:33,524 INFO L271 CegarLoopResult]: At program point L35-6(line 35) the Hoare annotation is: true [2020-07-17 13:29:33,525 INFO L271 CegarLoopResult]: At program point L35-7(line 35) the Hoare annotation is: true [2020-07-17 13:29:33,525 INFO L271 CegarLoopResult]: At program point L35-9(line 35) the Hoare annotation is: true [2020-07-17 13:29:33,525 INFO L271 CegarLoopResult]: At program point L35-10(line 35) the Hoare annotation is: true [2020-07-17 13:29:33,525 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 30 50) the Hoare annotation is: true [2020-07-17 13:29:33,525 INFO L271 CegarLoopResult]: At program point L35-11(lines 35 44) the Hoare annotation is: true [2020-07-17 13:29:33,526 INFO L271 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: true [2020-07-17 13:29:33,526 INFO L271 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: true [2020-07-17 13:29:33,526 INFO L264 CegarLoopResult]: At program point L49(line 49) the Hoare annotation is: false [2020-07-17 13:29:33,526 INFO L271 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: true [2020-07-17 13:29:33,526 INFO L264 CegarLoopResult]: At program point L41-1(lines 41 43) the Hoare annotation is: (and (<= 0 (+ |main_#t~ret16| 2147483648)) (<= |main_#t~ret16| 2147483647)) [2020-07-17 13:29:33,527 INFO L264 CegarLoopResult]: At program point L41-2(line 41) the Hoare annotation is: (= |main_#t~ret16| 0) [2020-07-17 13:29:33,527 INFO L264 CegarLoopResult]: At program point L41-3(line 41) the Hoare annotation is: (and (<= |main_#t~ret16| 2147483647) (<= 0 (+ |main_#t~ret16| 2147483648))) [2020-07-17 13:29:33,527 INFO L271 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: true [2020-07-17 13:29:33,527 INFO L271 CegarLoopResult]: At program point L37-1(line 37) the Hoare annotation is: true [2020-07-17 13:29:33,527 INFO L271 CegarLoopResult]: At program point L37-2(line 37) the Hoare annotation is: true [2020-07-17 13:29:33,528 INFO L271 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: true [2020-07-17 13:29:33,528 INFO L271 CegarLoopResult]: At program point L33-1(line 33) the Hoare annotation is: true [2020-07-17 13:29:33,528 INFO L271 CegarLoopResult]: At program point L33-2(line 33) the Hoare annotation is: true [2020-07-17 13:29:33,528 INFO L271 CegarLoopResult]: At program point L33-3(line 33) the Hoare annotation is: true [2020-07-17 13:29:33,529 INFO L271 CegarLoopResult]: At program point L33-4(line 33) the Hoare annotation is: true [2020-07-17 13:29:33,529 INFO L271 CegarLoopResult]: At program point L33-5(line 33) the Hoare annotation is: true [2020-07-17 13:29:33,529 INFO L271 CegarLoopResult]: At program point L33-6(line 33) the Hoare annotation is: true [2020-07-17 13:29:33,529 INFO L271 CegarLoopResult]: At program point L33-7(line 33) the Hoare annotation is: true [2020-07-17 13:29:33,529 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 30 50) the Hoare annotation is: true [2020-07-17 13:29:33,530 INFO L271 CegarLoopResult]: At program point L42(lines 31 50) the Hoare annotation is: true [2020-07-17 13:29:33,530 INFO L271 CegarLoopResult]: At program point L38-1(lines 38 40) the Hoare annotation is: true [2020-07-17 13:29:33,530 INFO L271 CegarLoopResult]: At program point L38-2(line 38) the Hoare annotation is: true [2020-07-17 13:29:33,530 INFO L271 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: true [2020-07-17 13:29:33,530 INFO L271 CegarLoopResult]: At program point L38-4(line 38) the Hoare annotation is: true [2020-07-17 13:29:33,530 INFO L271 CegarLoopResult]: At program point L34-1(line 34) the Hoare annotation is: true [2020-07-17 13:29:33,531 INFO L271 CegarLoopResult]: At program point L38-5(lines 38 40) the Hoare annotation is: true [2020-07-17 13:29:33,531 INFO L271 CegarLoopResult]: At program point L34-2(line 34) the Hoare annotation is: true [2020-07-17 13:29:33,531 INFO L271 CegarLoopResult]: At program point L38-6(lines 38 40) the Hoare annotation is: true [2020-07-17 13:29:33,531 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) the Hoare annotation is: false [2020-07-17 13:29:33,532 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 30 50) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-07-17 13:29:33,532 INFO L271 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: true [2020-07-17 13:29:33,532 INFO L271 CegarLoopResult]: At program point L39-1(line 39) the Hoare annotation is: true [2020-07-17 13:29:33,532 INFO L271 CegarLoopResult]: At program point L39-2(line 39) the Hoare annotation is: true [2020-07-17 13:29:33,532 INFO L271 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: true [2020-07-17 13:29:33,532 INFO L271 CegarLoopResult]: At program point L35-1(line 35) the Hoare annotation is: true [2020-07-17 13:29:33,533 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 25 28) the Hoare annotation is: true [2020-07-17 13:29:33,533 INFO L271 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: true [2020-07-17 13:29:33,533 INFO L271 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: true [2020-07-17 13:29:33,533 INFO L271 CegarLoopResult]: At program point L25(lines 25 28) the Hoare annotation is: true [2020-07-17 13:29:33,533 INFO L271 CegarLoopResult]: At program point L27-2(line 27) the Hoare annotation is: true [2020-07-17 13:29:33,533 INFO L271 CegarLoopResult]: At program point checkFINAL(lines 25 28) the Hoare annotation is: true [2020-07-17 13:29:33,534 INFO L271 CegarLoopResult]: At program point checkEXIT(lines 25 28) the Hoare annotation is: true [2020-07-17 13:29:33,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 01:29:33 BoogieIcfgContainer [2020-07-17 13:29:33,547 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 13:29:33,550 INFO L168 Benchmark]: Toolchain (without parser) took 2585.28 ms. Allocated memory was 144.7 MB in the beginning and 234.4 MB in the end (delta: 89.7 MB). Free memory was 101.7 MB in the beginning and 99.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 91.6 MB. Max. memory is 7.1 GB. [2020-07-17 13:29:33,551 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 144.7 MB. Free memory was 120.1 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 13:29:33,552 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.25 ms. Allocated memory is still 144.7 MB. Free memory was 101.3 MB in the beginning and 90.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-07-17 13:29:33,553 INFO L168 Benchmark]: Boogie Preprocessor took 127.12 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 90.7 MB in the beginning and 180.4 MB in the end (delta: -89.6 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-17 13:29:33,554 INFO L168 Benchmark]: RCFGBuilder took 489.18 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 157.3 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-07-17 13:29:33,555 INFO L168 Benchmark]: TraceAbstraction took 1703.40 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 156.7 MB in the beginning and 99.8 MB in the end (delta: 56.9 MB). Peak memory consumption was 88.9 MB. Max. memory is 7.1 GB. [2020-07-17 13:29:33,559 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 144.7 MB. Free memory was 120.1 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 259.25 ms. Allocated memory is still 144.7 MB. Free memory was 101.3 MB in the beginning and 90.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.12 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 90.7 MB in the beginning and 180.4 MB in the end (delta: -89.6 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 489.18 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 157.3 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1703.40 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 156.7 MB in the beginning and 99.8 MB in the end (delta: 56.9 MB). Peak memory consumption was 88.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: 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: 38]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 1 - 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: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 1, TraceHistogramMax: 3, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 92 SDslu, 14 SDs, 0 SdLazy, 166 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred 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, 88 LocationsWithAnnotation, 111 PreInvPairs, 122 NumberOfFragments, 136 HoareAnnotationTreeSize, 111 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 88 FomulaSimplificationsInter, 1776 FormulaSimplificationTreeSizeReductionInter, 0.2s 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...