/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/matrix-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:45:02,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:45:02,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:45:02,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:45:02,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:45:02,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:45:02,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:45:02,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:45:02,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:45:02,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:45:02,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:45:02,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:45:02,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:45:02,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:45:02,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:45:02,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:45:02,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:45:02,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:45:02,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:45:02,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:45:02,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:45:02,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:45:02,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:45:02,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:45:02,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-06 22:45:02,281 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-06 22:45:02,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-06 22:45:02,283 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-06 22:45:02,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-06 22:45:02,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-06 22:45:02,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-06 22:45:02,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-06 22:45:02,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-06 22:45:02,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-06 22:45:02,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-06 22:45:02,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-06 22:45:02,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-06 22:45:02,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-06 22:45:02,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:45:02,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:45:02,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:45:02,308 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 22:45:02,335 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:45:02,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:45:02,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:45:02,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:45:02,338 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:45:02,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:45:02,338 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:45:02,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:45:02,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:45:02,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:45:02,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:45:02,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:45:02,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:45:02,339 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:45:02,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:45:02,340 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:45:02,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:45:02,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:45:02,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:45:02,341 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:45:02,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:45:02,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:45:02,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:45:02,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:45:02,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:45:02,342 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:45:02,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:45:02,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:45:02,342 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:45:02,343 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:45:02,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:45:02,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:45:02,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:45:02,811 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:45:02,812 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:45:02,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/matrix-2.c [2020-11-06 22:45:02,906 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2b7f3887/196f5edcf75044eda1c42a9d0c7fd1fb/FLAGf2cbd7d5d [2020-11-06 22:45:03,571 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:45:03,572 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/matrix-2.c [2020-11-06 22:45:03,579 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2b7f3887/196f5edcf75044eda1c42a9d0c7fd1fb/FLAGf2cbd7d5d [2020-11-06 22:45:03,921 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2b7f3887/196f5edcf75044eda1c42a9d0c7fd1fb [2020-11-06 22:45:03,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:45:03,931 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:45:03,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:45:03,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:45:03,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:45:03,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:45:03" (1/1) ... [2020-11-06 22:45:03,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e76842d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:03, skipping insertion in model container [2020-11-06 22:45:03,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:45:03" (1/1) ... [2020-11-06 22:45:03,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:45:03,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:45:04,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:45:04,189 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:45:04,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:45:04,251 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:45:04,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:04 WrapperNode [2020-11-06 22:45:04,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:45:04,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:45:04,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:45:04,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:45:04,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:04" (1/1) ... [2020-11-06 22:45:04,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:04" (1/1) ... [2020-11-06 22:45:04,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:04" (1/1) ... [2020-11-06 22:45:04,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:04" (1/1) ... [2020-11-06 22:45:04,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:04" (1/1) ... [2020-11-06 22:45:04,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:04" (1/1) ... [2020-11-06 22:45:04,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:04" (1/1) ... [2020-11-06 22:45:04,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:45:04,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:45:04,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:45:04,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:45:04,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:04" (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 [2020-11-06 22:45:04,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:45:04,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:45:04,440 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:45:04,441 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:45:04,441 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:45:04,442 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:45:04,442 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:45:04,444 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:45:04,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:45:04,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:45:04,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-11-06 22:45:04,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:45:04,446 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:45:04,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:45:04,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:45:04,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:45:04,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:45:04,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:45:04,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:45:05,059 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:45:05,060 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-06 22:45:05,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:45:05 BoogieIcfgContainer [2020-11-06 22:45:05,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:45:05,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:45:05,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:45:05,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:45:05,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:45:03" (1/3) ... [2020-11-06 22:45:05,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58fbf9fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:45:05, skipping insertion in model container [2020-11-06 22:45:05,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:04" (2/3) ... [2020-11-06 22:45:05,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58fbf9fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:45:05, skipping insertion in model container [2020-11-06 22:45:05,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:45:05" (3/3) ... [2020-11-06 22:45:05,077 INFO L111 eAbstractionObserver]: Analyzing ICFG matrix-2.c [2020-11-06 22:45:05,095 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:45:05,101 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:45:05,116 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:45:05,158 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:45:05,158 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:45:05,158 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:45:05,158 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:45:05,159 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:45:05,159 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:45:05,159 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:45:05,159 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:45:05,183 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-06 22:45:05,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-06 22:45:05,199 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:05,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:05,201 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:05,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:05,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1126578627, now seen corresponding path program 1 times [2020-11-06 22:45:05,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:05,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202323049] [2020-11-06 22:45:05,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:05,379 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:45:05,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1743660957] [2020-11-06 22:45:05,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:05,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-06 22:45:05,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:45:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:05,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202323049] [2020-11-06 22:45:05,506 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:45:05,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743660957] [2020-11-06 22:45:05,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:45:05,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-06 22:45:05,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424799397] [2020-11-06 22:45:05,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-06 22:45:05,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:05,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-06 22:45:05,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-06 22:45:05,531 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-06 22:45:05,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:05,555 INFO L93 Difference]: Finished difference Result 57 states and 77 transitions. [2020-11-06 22:45:05,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-06 22:45:05,557 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-11-06 22:45:05,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:05,564 INFO L225 Difference]: With dead ends: 57 [2020-11-06 22:45:05,565 INFO L226 Difference]: Without dead ends: 25 [2020-11-06 22:45:05,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-06 22:45:05,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-06 22:45:05,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-06 22:45:05,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-06 22:45:05,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-11-06 22:45:05,609 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 15 [2020-11-06 22:45:05,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:05,609 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-11-06 22:45:05,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-06 22:45:05,610 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-11-06 22:45:05,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-06 22:45:05,610 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:05,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:05,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-06 22:45:05,825 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:05,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:05,827 INFO L82 PathProgramCache]: Analyzing trace with hash -251641684, now seen corresponding path program 1 times [2020-11-06 22:45:05,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:05,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31780948] [2020-11-06 22:45:05,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:05,846 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:45:05,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [686003519] [2020-11-06 22:45:05,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:05,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-06 22:45:05,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:45:06,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:06,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31780948] [2020-11-06 22:45:06,197 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:45:06,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686003519] [2020-11-06 22:45:06,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:45:06,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:45:06,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75542547] [2020-11-06 22:45:06,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:45:06,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:06,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:45:06,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:45:06,202 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 4 states. [2020-11-06 22:45:06,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:06,291 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-11-06 22:45:06,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:45:06,292 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-06 22:45:06,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:06,295 INFO L225 Difference]: With dead ends: 51 [2020-11-06 22:45:06,295 INFO L226 Difference]: Without dead ends: 36 [2020-11-06 22:45:06,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:45:06,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-06 22:45:06,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 26. [2020-11-06 22:45:06,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-06 22:45:06,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-11-06 22:45:06,307 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 15 [2020-11-06 22:45:06,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:06,307 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-11-06 22:45:06,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:45:06,308 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-11-06 22:45:06,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-06 22:45:06,308 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:06,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:06,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:06,518 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:06,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:06,520 INFO L82 PathProgramCache]: Analyzing trace with hash 565527252, now seen corresponding path program 1 times [2020-11-06 22:45:06,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:06,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633384735] [2020-11-06 22:45:06,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:06,553 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:45:06,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [9991987] [2020-11-06 22:45:06,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:06,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-06 22:45:06,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:45:06,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:06,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633384735] [2020-11-06 22:45:06,746 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:45:06,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9991987] [2020-11-06 22:45:06,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:45:06,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:45:06,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357893515] [2020-11-06 22:45:06,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:45:06,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:06,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:45:06,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:45:06,749 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-11-06 22:45:06,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:06,829 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2020-11-06 22:45:06,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:45:06,830 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-06 22:45:06,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:06,831 INFO L225 Difference]: With dead ends: 59 [2020-11-06 22:45:06,831 INFO L226 Difference]: Without dead ends: 33 [2020-11-06 22:45:06,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:45:06,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-06 22:45:06,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2020-11-06 22:45:06,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-06 22:45:06,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-11-06 22:45:06,838 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 18 [2020-11-06 22:45:06,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:06,839 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-11-06 22:45:06,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:45:06,839 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-11-06 22:45:06,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-06 22:45:06,840 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:06,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:07,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:07,054 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:07,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:07,055 INFO L82 PathProgramCache]: Analyzing trace with hash -51953805, now seen corresponding path program 1 times [2020-11-06 22:45:07,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:07,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988343908] [2020-11-06 22:45:07,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:07,074 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:45:07,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [3636062] [2020-11-06 22:45:07,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:45:07,174 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:45:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:45:07,210 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:45:07,257 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 22:45:07,257 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:45:07,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:07,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:45:07 BoogieIcfgContainer [2020-11-06 22:45:07,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:45:07,516 INFO L168 Benchmark]: Toolchain (without parser) took 3585.85 ms. Allocated memory is still 157.3 MB. Free memory was 133.2 MB in the beginning and 92.9 MB in the end (delta: 40.2 MB). Peak memory consumption was 41.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:07,520 INFO L168 Benchmark]: CDTParser took 1.46 ms. Allocated memory is still 125.8 MB. Free memory was 100.9 MB in the beginning and 100.8 MB in the end (delta: 120.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:45:07,522 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.23 ms. Allocated memory is still 157.3 MB. Free memory was 132.5 MB in the beginning and 122.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:07,523 INFO L168 Benchmark]: Boogie Preprocessor took 88.60 ms. Allocated memory is still 157.3 MB. Free memory was 122.2 MB in the beginning and 120.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:07,524 INFO L168 Benchmark]: RCFGBuilder took 718.48 ms. Allocated memory is still 157.3 MB. Free memory was 120.8 MB in the beginning and 136.9 MB in the end (delta: -16.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:07,525 INFO L168 Benchmark]: TraceAbstraction took 2443.10 ms. Allocated memory is still 157.3 MB. Free memory was 136.5 MB in the beginning and 92.9 MB in the end (delta: 43.6 MB). Peak memory consumption was 45.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:07,529 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.46 ms. Allocated memory is still 125.8 MB. Free memory was 100.9 MB in the beginning and 100.8 MB in the end (delta: 120.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 320.23 ms. Allocated memory is still 157.3 MB. Free memory was 132.5 MB in the beginning and 122.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 88.60 ms. Allocated memory is still 157.3 MB. Free memory was 122.2 MB in the beginning and 120.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 718.48 ms. Allocated memory is still 157.3 MB. Free memory was 120.8 MB in the beginning and 136.9 MB in the end (delta: -16.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2443.10 ms. Allocated memory is still 157.3 MB. Free memory was 136.5 MB in the beginning and 92.9 MB in the end (delta: 43.6 MB). Peak memory consumption was 45.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L16] unsigned int N_LIN=__VERIFIER_nondet_uint(); [L17] unsigned int N_COL=__VERIFIER_nondet_uint(); [L18] unsigned int j,k; [L19] int matriz[N_COL][N_LIN], maior; [L21] maior = __VERIFIER_nondet_int() [L22] j=0 VAL [j=0, maior=-1, matriz={5:0}, N_COL=1, N_LIN=1] [L22] COND TRUE jmaior [L28] EXPR matriz[j][k] [L28] maior = matriz[j][k] [L23] k++ VAL [j=0, k=1, maior=0, matriz={5:0}, N_COL=1, N_LIN=1] [L23] COND FALSE !(k