/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-b8ad66e [2020-10-23 18:42:59,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:42:59,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:42:59,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:42:59,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:42:59,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:42:59,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:42:59,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:42:59,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:42:59,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:42:59,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:42:59,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:42:59,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:42:59,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:42:59,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:42:59,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:42:59,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:42:59,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:42:59,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:42:59,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:42:59,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:42:59,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:43:00,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:43:00,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:43:00,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:43:00,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:43:00,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:43:00,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:43:00,029 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 [2020-10-23 18:43:00,091 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:43:00,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:43:00,097 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:43:00,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:43:00,097 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:43:00,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:43:00,098 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:43:00,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:43:00,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:43:00,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:43:00,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:43:00,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:43:00,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:43:00,102 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:43:00,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:43:00,102 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:43:00,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:43:00,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:43:00,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:43:00,106 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:43:00,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:43:00,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:43:00,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:43:00,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:43:00,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:43:00,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:43:00,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:43:00,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:43:00,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:43:00,109 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:43:00,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:43:00,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:43:00,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:43:00,536 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:43:00,537 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:43:00,538 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/matrix-2.c [2020-10-23 18:43:00,630 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb5f45a98/96bde54a9bdf4b2f9865f96e1d51fbf0/FLAG497681f66 [2020-10-23 18:43:01,271 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:43:01,272 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/matrix-2.c [2020-10-23 18:43:01,279 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb5f45a98/96bde54a9bdf4b2f9865f96e1d51fbf0/FLAG497681f66 [2020-10-23 18:43:01,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb5f45a98/96bde54a9bdf4b2f9865f96e1d51fbf0 [2020-10-23 18:43:01,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:43:01,613 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:43:01,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:43:01,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:43:01,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:43:01,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:43:01" (1/1) ... [2020-10-23 18:43:01,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19b15775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:01, skipping insertion in model container [2020-10-23 18:43:01,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:43:01" (1/1) ... [2020-10-23 18:43:01,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:43:01,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:43:01,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:43:01,846 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:43:01,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:43:01,890 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:43:01,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:01 WrapperNode [2020-10-23 18:43:01,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:43:01,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:43:01,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:43:01,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:43:01,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:01" (1/1) ... [2020-10-23 18:43:01,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:01" (1/1) ... [2020-10-23 18:43:01,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:01" (1/1) ... [2020-10-23 18:43:01,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:01" (1/1) ... [2020-10-23 18:43:01,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:01" (1/1) ... [2020-10-23 18:43:01,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:01" (1/1) ... [2020-10-23 18:43:01,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:01" (1/1) ... [2020-10-23 18:43:01,939 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:43:01,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:43:01,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:43:01,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:43:01,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:01" (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 [2020-10-23 18:43:02,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:43:02,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:43:02,036 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:43:02,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:43:02,036 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:43:02,036 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:43:02,037 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:43:02,037 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:43:02,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:43:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:43:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-23 18:43:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:43:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:43:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:43:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:43:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:43:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:43:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:43:02,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:43:02,455 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:43:02,456 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-23 18:43:02,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:43:02 BoogieIcfgContainer [2020-10-23 18:43:02,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:43:02,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:43:02,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:43:02,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:43:02,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:43:01" (1/3) ... [2020-10-23 18:43:02,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cb130f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:43:02, skipping insertion in model container [2020-10-23 18:43:02,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:01" (2/3) ... [2020-10-23 18:43:02,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cb130f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:43:02, skipping insertion in model container [2020-10-23 18:43:02,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:43:02" (3/3) ... [2020-10-23 18:43:02,512 INFO L111 eAbstractionObserver]: Analyzing ICFG matrix-2.c [2020-10-23 18:43:02,527 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:43:02,533 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:43:02,550 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:43:02,598 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:43:02,598 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:43:02,598 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:43:02,599 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:43:02,599 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:43:02,599 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:43:02,599 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:43:02,599 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:43:02,629 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-23 18:43:02,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-23 18:43:02,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:02,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:43:02,642 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:02,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:02,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1126578627, now seen corresponding path program 1 times [2020-10-23 18:43:02,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:02,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785856567] [2020-10-23 18:43:02,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:02,859 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 18:43:02,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1792089335] [2020-10-23 18:43:02,861 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 [2020-10-23 18:43:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:03,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-23 18:43:03,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:43:03,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:43:03,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785856567] [2020-10-23 18:43:03,125 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 18:43:03,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792089335] [2020-10-23 18:43:03,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:43:03,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-23 18:43:03,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071468689] [2020-10-23 18:43:03,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-23 18:43:03,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:03,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-23 18:43:03,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-23 18:43:03,152 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-10-23 18:43:03,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:03,178 INFO L93 Difference]: Finished difference Result 57 states and 77 transitions. [2020-10-23 18:43:03,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-23 18:43:03,180 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-10-23 18:43:03,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:03,188 INFO L225 Difference]: With dead ends: 57 [2020-10-23 18:43:03,189 INFO L226 Difference]: Without dead ends: 25 [2020-10-23 18:43:03,193 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 [2020-10-23 18:43:03,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-23 18:43:03,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-23 18:43:03,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-23 18:43:03,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-10-23 18:43:03,235 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 15 [2020-10-23 18:43:03,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:03,236 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-10-23 18:43:03,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-23 18:43:03,236 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-10-23 18:43:03,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-23 18:43:03,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:03,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:43:03,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-10-23 18:43:03,452 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:03,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:03,455 INFO L82 PathProgramCache]: Analyzing trace with hash -251641684, now seen corresponding path program 1 times [2020-10-23 18:43:03,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:03,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984452122] [2020-10-23 18:43:03,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:03,499 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 18:43:03,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1669981108] [2020-10-23 18:43:03,500 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 [2020-10-23 18:43:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:03,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-23 18:43:03,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:43:03,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:43:03,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984452122] [2020-10-23 18:43:03,698 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 18:43:03,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669981108] [2020-10-23 18:43:03,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:43:03,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 18:43:03,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307719379] [2020-10-23 18:43:03,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 18:43:03,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:03,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 18:43:03,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 18:43:03,703 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 4 states. [2020-10-23 18:43:03,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:03,793 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-10-23 18:43:03,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 18:43:03,795 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-23 18:43:03,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:03,798 INFO L225 Difference]: With dead ends: 51 [2020-10-23 18:43:03,799 INFO L226 Difference]: Without dead ends: 36 [2020-10-23 18:43:03,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:43:03,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-23 18:43:03,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 26. [2020-10-23 18:43:03,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-23 18:43:03,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-23 18:43:03,825 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 15 [2020-10-23 18:43:03,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:03,826 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-23 18:43:03,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 18:43:03,828 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-23 18:43:03,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-23 18:43:03,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:03,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:43:04,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:43:04,049 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:04,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:04,051 INFO L82 PathProgramCache]: Analyzing trace with hash 565527252, now seen corresponding path program 1 times [2020-10-23 18:43:04,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:04,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691482133] [2020-10-23 18:43:04,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:04,083 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 18:43:04,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [294287213] [2020-10-23 18:43:04,084 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 [2020-10-23 18:43:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:04,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-23 18:43:04,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:43:04,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:43:04,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691482133] [2020-10-23 18:43:04,234 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 18:43:04,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294287213] [2020-10-23 18:43:04,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:43:04,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 18:43:04,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225450636] [2020-10-23 18:43:04,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 18:43:04,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:04,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 18:43:04,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 18:43:04,238 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-10-23 18:43:04,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:04,318 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2020-10-23 18:43:04,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 18:43:04,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-23 18:43:04,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:04,320 INFO L225 Difference]: With dead ends: 59 [2020-10-23 18:43:04,320 INFO L226 Difference]: Without dead ends: 33 [2020-10-23 18:43:04,321 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 [2020-10-23 18:43:04,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-23 18:43:04,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2020-10-23 18:43:04,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-23 18:43:04,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-23 18:43:04,328 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 18 [2020-10-23 18:43:04,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:04,328 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-23 18:43:04,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 18:43:04,329 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-23 18:43:04,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-23 18:43:04,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:04,330 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] [2020-10-23 18:43:04,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:43:04,531 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:04,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:04,533 INFO L82 PathProgramCache]: Analyzing trace with hash -51953805, now seen corresponding path program 1 times [2020-10-23 18:43:04,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:04,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146984188] [2020-10-23 18:43:04,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:04,559 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 18:43:04,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [495328996] [2020-10-23 18:43:04,560 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 [2020-10-23 18:43:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:43:04,644 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:43:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:43:04,672 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:43:04,710 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 18:43:04,710 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 18:43:04,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:43:04,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:43:04 BoogieIcfgContainer [2020-10-23 18:43:04,972 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:43:04,974 INFO L168 Benchmark]: Toolchain (without parser) took 3365.35 ms. Allocated memory is still 160.4 MB. Free memory was 135.6 MB in the beginning and 54.9 MB in the end (delta: 80.7 MB). Peak memory consumption was 81.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:04,975 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 160.4 MB. Free memory is still 132.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:43:04,976 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.32 ms. Allocated memory is still 160.4 MB. Free memory was 135.0 MB in the beginning and 125.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:04,977 INFO L168 Benchmark]: Boogie Preprocessor took 46.41 ms. Allocated memory is still 160.4 MB. Free memory was 125.0 MB in the beginning and 123.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:04,979 INFO L168 Benchmark]: RCFGBuilder took 518.41 ms. Allocated memory is still 160.4 MB. Free memory was 123.3 MB in the beginning and 106.9 MB in the end (delta: 16.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:04,980 INFO L168 Benchmark]: TraceAbstraction took 2490.46 ms. Allocated memory is still 160.4 MB. Free memory was 143.5 MB in the beginning and 54.9 MB in the end (delta: 88.6 MB). Peak memory consumption was 88.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:04,984 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 160.4 MB. Free memory is still 132.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 274.32 ms. Allocated memory is still 160.4 MB. Free memory was 135.0 MB in the beginning and 125.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.41 ms. Allocated memory is still 160.4 MB. Free memory was 125.0 MB in the beginning and 123.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 518.41 ms. Allocated memory is still 160.4 MB. Free memory was 123.3 MB in the beginning and 106.9 MB in the end (delta: 16.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2490.46 ms. Allocated memory is still 160.4 MB. Free memory was 143.5 MB in the beginning and 54.9 MB in the end (delta: 88.6 MB). Peak memory consumption was 88.1 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