/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/verifythis/elimination_max.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:16:41,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:16:41,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:16:41,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:16:41,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:16:41,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:16:41,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:16:41,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:16:41,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:16:41,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:16:41,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:16:41,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:16:41,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:16:41,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:16:41,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:16:41,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:16:41,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:16:41,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:16:41,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:16:41,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:16:41,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:16:41,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:16:41,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:16:41,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:16:41,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:16:41,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:16:41,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:16:41,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:16:41,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:16:41,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:16:41,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:16:41,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:16:41,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:16:41,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:16:41,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:16:41,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:16:41,272 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:16:41,322 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:16:41,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:16:41,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:16:41,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:16:41,327 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:16:41,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:16:41,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:16:41,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:16:41,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:16:41,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:16:41,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:16:41,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:16:41,328 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:16:41,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:16:41,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:16:41,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:16:41,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:16:41,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:16:41,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:16:41,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:16:41,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:16:41,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:16:41,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:16:41,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:16:41,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:16:41,332 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:16:41,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:16:41,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:16:41,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:16:41,829 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:16:41,834 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:16:41,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/elimination_max.c [2020-12-23 07:16:41,917 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a96a273a2/324c46783221463e86fc435aea93b668/FLAG2bc389b51 [2020-12-23 07:16:42,552 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:16:42,552 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/verifythis/elimination_max.c [2020-12-23 07:16:42,561 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a96a273a2/324c46783221463e86fc435aea93b668/FLAG2bc389b51 [2020-12-23 07:16:42,907 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a96a273a2/324c46783221463e86fc435aea93b668 [2020-12-23 07:16:42,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:16:42,913 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:16:42,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:16:42,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:16:42,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:16:42,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:16:42" (1/1) ... [2020-12-23 07:16:42,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e02efaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:16:42, skipping insertion in model container [2020-12-23 07:16:42,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:16:42" (1/1) ... [2020-12-23 07:16:42,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:16:42,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:16:43,122 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/verifythis/elimination_max.c[485,498] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2020-12-23 07:16:43,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:16:43,164 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:16:43,180 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/verifythis/elimination_max.c[485,498] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2020-12-23 07:16:43,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:16:43,206 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:16:43,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:16:43 WrapperNode [2020-12-23 07:16:43,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:16:43,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:16:43,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:16:43,209 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:16:43,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:16:43" (1/1) ... [2020-12-23 07:16:43,229 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:16:43" (1/1) ... [2020-12-23 07:16:43,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:16:43,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:16:43,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:16:43,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:16:43,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:16:43" (1/1) ... [2020-12-23 07:16:43,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:16:43" (1/1) ... [2020-12-23 07:16:43,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:16:43" (1/1) ... [2020-12-23 07:16:43,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:16:43" (1/1) ... [2020-12-23 07:16:43,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:16:43" (1/1) ... [2020-12-23 07:16:43,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:16:43" (1/1) ... [2020-12-23 07:16:43,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:16:43" (1/1) ... [2020-12-23 07:16:43,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:16:43,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:16:43,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:16:43,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:16:43,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:16:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 07:16:43,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:16:43,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:16:43,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 07:16:43,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:16:43,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:16:43,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 07:16:43,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 07:16:44,000 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:16:44,001 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-23 07:16:44,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:16:44 BoogieIcfgContainer [2020-12-23 07:16:44,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:16:44,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:16:44,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:16:44,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:16:44,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:16:42" (1/3) ... [2020-12-23 07:16:44,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6898b1f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:16:44, skipping insertion in model container [2020-12-23 07:16:44,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:16:43" (2/3) ... [2020-12-23 07:16:44,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6898b1f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:16:44, skipping insertion in model container [2020-12-23 07:16:44,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:16:44" (3/3) ... [2020-12-23 07:16:44,013 INFO L111 eAbstractionObserver]: Analyzing ICFG elimination_max.c [2020-12-23 07:16:44,020 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:16:44,026 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 07:16:44,050 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-23 07:16:44,078 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:16:44,078 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:16:44,079 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:16:44,079 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:16:44,079 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:16:44,079 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:16:44,079 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:16:44,080 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:16:44,098 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-12-23 07:16:44,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:16:44,104 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:16:44,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:16:44,106 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:16:44,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:16:44,113 INFO L82 PathProgramCache]: Analyzing trace with hash -489201995, now seen corresponding path program 1 times [2020-12-23 07:16:44,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:16:44,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421314751] [2020-12-23 07:16:44,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:16:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:16:44,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:16:44,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421314751] [2020-12-23 07:16:44,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:16:44,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:16:44,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735724120] [2020-12-23 07:16:44,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:16:44,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:16:44,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:16:44,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:16:44,319 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-12-23 07:16:44,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:16:44,338 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2020-12-23 07:16:44,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:16:44,339 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-23 07:16:44,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:16:44,349 INFO L225 Difference]: With dead ends: 45 [2020-12-23 07:16:44,349 INFO L226 Difference]: Without dead ends: 20 [2020-12-23 07:16:44,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:16:44,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-23 07:16:44,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-23 07:16:44,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-23 07:16:44,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-12-23 07:16:44,397 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2020-12-23 07:16:44,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:16:44,398 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-12-23 07:16:44,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:16:44,398 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-12-23 07:16:44,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:16:44,400 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:16:44,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:16:44,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:16:44,402 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:16:44,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:16:44,405 INFO L82 PathProgramCache]: Analyzing trace with hash 190915957, now seen corresponding path program 1 times [2020-12-23 07:16:44,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:16:44,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443067065] [2020-12-23 07:16:44,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:16:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:16:44,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:16:44,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443067065] [2020-12-23 07:16:44,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:16:44,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:16:44,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89190365] [2020-12-23 07:16:44,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:16:44,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:16:44,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:16:44,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:16:44,734 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 6 states. [2020-12-23 07:16:44,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:16:44,822 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2020-12-23 07:16:44,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:16:44,823 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-23 07:16:44,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:16:44,823 INFO L225 Difference]: With dead ends: 20 [2020-12-23 07:16:44,823 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 07:16:44,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:16:44,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 07:16:44,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 07:16:44,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 07:16:44,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 07:16:44,826 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-12-23 07:16:44,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:16:44,826 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 07:16:44,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:16:44,826 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 07:16:44,827 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 07:16:44,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 07:16:44,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-23 07:16:44,870 INFO L185 CegarLoopUtils]: At program point L35-2(lines 25 37) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= .cse0 (select |#memory_int| |ULTIMATE.start_main_#t~malloc9.base|)) (= (select |#memory_int| ULTIMATE.start_main_~a~0.base) .cse0))) [2020-12-23 07:16:44,870 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2020-12-23 07:16:44,870 INFO L189 CegarLoopUtils]: For program point L11(line 11) no Hoare annotation was computed. [2020-12-23 07:16:44,871 INFO L189 CegarLoopUtils]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-12-23 07:16:44,871 INFO L189 CegarLoopUtils]: For program point L11-3(line 11) no Hoare annotation was computed. [2020-12-23 07:16:44,871 INFO L189 CegarLoopUtils]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-12-23 07:16:44,871 INFO L189 CegarLoopUtils]: For program point L11-4(line 11) no Hoare annotation was computed. [2020-12-23 07:16:44,871 INFO L189 CegarLoopUtils]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2020-12-23 07:16:44,871 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-23 07:16:44,871 INFO L189 CegarLoopUtils]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-12-23 07:16:44,872 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-23 07:16:44,872 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-23 07:16:44,872 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2020-12-23 07:16:44,872 INFO L189 CegarLoopUtils]: For program point L45-2(lines 45 47) no Hoare annotation was computed. [2020-12-23 07:16:44,873 INFO L185 CegarLoopUtils]: At program point L45-3(lines 45 47) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= .cse0 (select |#memory_int| |ULTIMATE.start_main_#t~malloc9.base|)) (= (select |#memory_int| ULTIMATE.start_main_~a~0.base) .cse0))) [2020-12-23 07:16:44,873 INFO L189 CegarLoopUtils]: For program point L45-4(lines 45 47) no Hoare annotation was computed. [2020-12-23 07:16:44,873 INFO L189 CegarLoopUtils]: For program point L8(line 8) no Hoare annotation was computed. [2020-12-23 07:16:44,873 INFO L189 CegarLoopUtils]: For program point L8-2(line 8) no Hoare annotation was computed. [2020-12-23 07:16:44,873 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-23 07:16:44,874 INFO L189 CegarLoopUtils]: For program point L25-2(lines 25 37) no Hoare annotation was computed. [2020-12-23 07:16:44,874 INFO L192 CegarLoopUtils]: At program point L50(lines 16 51) the Hoare annotation is: true [2020-12-23 07:16:44,874 INFO L189 CegarLoopUtils]: For program point L10(lines 10 12) no Hoare annotation was computed. [2020-12-23 07:16:44,874 INFO L189 CegarLoopUtils]: For program point L10-1(lines 10 12) no Hoare annotation was computed. [2020-12-23 07:16:44,874 INFO L189 CegarLoopUtils]: For program point L35(lines 35 36) no Hoare annotation was computed. [2020-12-23 07:16:44,884 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:240) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:558) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:256) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:213) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-23 07:16:44,888 INFO L168 Benchmark]: Toolchain (without parser) took 1974.34 ms. Allocated memory is still 152.0 MB. Free memory was 127.2 MB in the beginning and 95.2 MB in the end (delta: 32.0 MB). Peak memory consumption was 33.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:16:44,889 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 152.0 MB. Free memory was 124.8 MB in the beginning and 124.7 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:16:44,890 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.08 ms. Allocated memory is still 152.0 MB. Free memory was 127.1 MB in the beginning and 117.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 07:16:44,891 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.84 ms. Allocated memory is still 152.0 MB. Free memory was 117.0 MB in the beginning and 115.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:16:44,892 INFO L168 Benchmark]: Boogie Preprocessor took 28.72 ms. Allocated memory is still 152.0 MB. Free memory was 115.2 MB in the beginning and 114.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:16:44,893 INFO L168 Benchmark]: RCFGBuilder took 717.89 ms. Allocated memory is still 152.0 MB. Free memory was 114.1 MB in the beginning and 131.4 MB in the end (delta: -17.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-12-23 07:16:44,893 INFO L168 Benchmark]: TraceAbstraction took 881.27 ms. Allocated memory is still 152.0 MB. Free memory was 130.9 MB in the beginning and 95.2 MB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 8.0 GB. [2020-12-23 07:16:44,898 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 152.0 MB. Free memory was 124.8 MB in the beginning and 124.7 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 293.08 ms. Allocated memory is still 152.0 MB. Free memory was 127.1 MB in the beginning and 117.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 45.84 ms. Allocated memory is still 152.0 MB. Free memory was 117.0 MB in the beginning and 115.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.72 ms. Allocated memory is still 152.0 MB. Free memory was 115.2 MB in the beginning and 114.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 717.89 ms. Allocated memory is still 152.0 MB. Free memory was 114.1 MB in the beginning and 131.4 MB in the end (delta: -17.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 881.27 ms. Allocated memory is still 152.0 MB. Free memory was 130.9 MB in the beginning and 95.2 MB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:240) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...