/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy CAMEL_NO_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/matrix-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 21:45:51,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:45:51,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:45:51,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:45:51,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:45:51,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:45:51,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:45:51,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:45:51,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:45:51,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:45:51,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:45:51,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:45:51,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:45:51,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:45:51,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:45:51,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:45:51,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:45:51,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:45:51,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:45:51,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:45:51,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:45:51,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:45:51,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:45:51,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:45:51,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 21:45:51,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:45:51,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:45:51,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:45:51,236 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 [2020-07-19 21:45:51,254 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:45:51,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:45:51,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:45:51,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:45:51,257 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:45:51,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:45:51,257 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:45:51,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:45:51,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:45:51,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:45:51,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:45:51,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:45:51,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:45:51,259 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:45:51,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:45:51,259 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:45:51,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:45:51,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:45:51,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:45:51,260 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:45:51,261 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:45:51,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:45:51,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:45:51,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:45:51,261 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:45:51,262 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:45:51,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:45:51,262 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:45:51,263 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:45:51,263 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 21:45:51,539 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:45:51,558 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:45:51,561 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:45:51,563 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:45:51,564 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:45:51,565 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/matrix-2.c [2020-07-19 21:45:51,642 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fb44ab90/ce0fadb456f04c7d9605529e50cff830/FLAGe091a1aa0 [2020-07-19 21:45:52,148 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:45:52,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/matrix-2.c [2020-07-19 21:45:52,156 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fb44ab90/ce0fadb456f04c7d9605529e50cff830/FLAGe091a1aa0 [2020-07-19 21:45:52,517 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fb44ab90/ce0fadb456f04c7d9605529e50cff830 [2020-07-19 21:45:52,529 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:45:52,532 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:45:52,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:45:52,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:45:52,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:45:52,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:45:52" (1/1) ... [2020-07-19 21:45:52,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20a42054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:52, skipping insertion in model container [2020-07-19 21:45:52,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:45:52" (1/1) ... [2020-07-19 21:45:52,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:45:52,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:45:52,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:45:52,745 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:45:52,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:45:52,789 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:45:52,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:52 WrapperNode [2020-07-19 21:45:52,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:45:52,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:45:52,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:45:52,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:45:52,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:52" (1/1) ... [2020-07-19 21:45:52,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:52" (1/1) ... [2020-07-19 21:45:52,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:52" (1/1) ... [2020-07-19 21:45:52,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:52" (1/1) ... [2020-07-19 21:45:52,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:52" (1/1) ... [2020-07-19 21:45:52,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:52" (1/1) ... [2020-07-19 21:45:52,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:52" (1/1) ... [2020-07-19 21:45:52,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:45:52,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:45:52,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:45:52,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:45:52,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:45:52,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:45:52,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:45:52,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 21:45:52,982 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:45:52,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:45:52,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 21:45:52,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-19 21:45:52,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 21:45:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:45:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 21:45:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 21:45:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 21:45:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 21:45:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:45:52,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:45:53,398 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:45:53,398 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-19 21:45:53,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:45:53 BoogieIcfgContainer [2020-07-19 21:45:53,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:45:53,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:45:53,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:45:53,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:45:53,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:45:52" (1/3) ... [2020-07-19 21:45:53,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e69c891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:45:53, skipping insertion in model container [2020-07-19 21:45:53,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:52" (2/3) ... [2020-07-19 21:45:53,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e69c891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:45:53, skipping insertion in model container [2020-07-19 21:45:53,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:45:53" (3/3) ... [2020-07-19 21:45:53,410 INFO L109 eAbstractionObserver]: Analyzing ICFG matrix-2.c [2020-07-19 21:45:53,421 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:45:53,429 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 21:45:53,445 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 21:45:53,468 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:45:53,468 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:45:53,468 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:45:53,468 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:45:53,468 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:45:53,469 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:45:53,469 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:45:53,469 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:45:53,484 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-07-19 21:45:53,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-19 21:45:53,490 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:45:53,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:45:53,492 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:45:53,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:45:53,498 INFO L82 PathProgramCache]: Analyzing trace with hash -2125374060, now seen corresponding path program 1 times [2020-07-19 21:45:53,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:45:53,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949961142] [2020-07-19 21:45:53,508 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5ce1f05 [2020-07-19 21:45:53,588 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 21:45:53,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1648880369] [2020-07-19 21:45:53,589 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5ce1f05 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 [2020-07-19 21:45:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:53,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-19 21:45:53,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 21:45:53,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:45:53,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949961142] [2020-07-19 21:45:53,702 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-19 21:45:53,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648880369] [2020-07-19 21:45:53,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:45:53,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-19 21:45:53,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328640296] [2020-07-19 21:45:53,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-19 21:45:53,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:45:53,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-19 21:45:53,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-19 21:45:53,729 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-07-19 21:45:53,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:45:53,753 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2020-07-19 21:45:53,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-19 21:45:53,755 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-07-19 21:45:53,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:45:53,762 INFO L225 Difference]: With dead ends: 52 [2020-07-19 21:45:53,762 INFO L226 Difference]: Without dead ends: 24 [2020-07-19 21:45:53,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-19 21:45:53,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-19 21:45:53,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-19 21:45:53,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-19 21:45:53,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-07-19 21:45:53,801 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 14 [2020-07-19 21:45:53,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:45:53,801 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-07-19 21:45:53,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-19 21:45:53,802 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-07-19 21:45:53,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-19 21:45:53,803 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:45:53,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:45:54,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-07-19 21:45:54,004 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:45:54,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:45:54,006 INFO L82 PathProgramCache]: Analyzing trace with hash 739661195, now seen corresponding path program 1 times [2020-07-19 21:45:54,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:45:54,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219319709] [2020-07-19 21:45:54,008 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5ce1f05 [2020-07-19 21:45:54,024 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 21:45:54,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1040060288] [2020-07-19 21:45:54,025 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5ce1f05 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 [2020-07-19 21:45:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:54,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-19 21:45:54,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 21:45:54,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:45:54,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219319709] [2020-07-19 21:45:54,152 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-19 21:45:54,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040060288] [2020-07-19 21:45:54,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:45:54,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 21:45:54,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333398699] [2020-07-19 21:45:54,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 21:45:54,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:45:54,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 21:45:54,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:45:54,157 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 4 states. [2020-07-19 21:45:54,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:45:54,240 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2020-07-19 21:45:54,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 21:45:54,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-07-19 21:45:54,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:45:54,244 INFO L225 Difference]: With dead ends: 49 [2020-07-19 21:45:54,244 INFO L226 Difference]: Without dead ends: 35 [2020-07-19 21:45:54,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:45:54,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-19 21:45:54,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 25. [2020-07-19 21:45:54,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-19 21:45:54,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-07-19 21:45:54,256 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 14 [2020-07-19 21:45:54,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:45:54,257 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-07-19 21:45:54,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 21:45:54,257 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-07-19 21:45:54,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-19 21:45:54,258 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:45:54,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:45:54,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:45:54,473 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:45:54,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:45:54,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1656958391, now seen corresponding path program 1 times [2020-07-19 21:45:54,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:45:54,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177465340] [2020-07-19 21:45:54,476 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5ce1f05 [2020-07-19 21:45:54,485 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 21:45:54,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1432861137] [2020-07-19 21:45:54,486 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5ce1f05 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 [2020-07-19 21:45:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:54,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-19 21:45:54,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 21:45:54,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:45:54,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177465340] [2020-07-19 21:45:54,583 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-19 21:45:54,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432861137] [2020-07-19 21:45:54,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:45:54,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 21:45:54,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693170691] [2020-07-19 21:45:54,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 21:45:54,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:45:54,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 21:45:54,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:45:54,586 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 4 states. [2020-07-19 21:45:54,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:45:54,660 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2020-07-19 21:45:54,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 21:45:54,661 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-07-19 21:45:54,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:45:54,663 INFO L225 Difference]: With dead ends: 57 [2020-07-19 21:45:54,663 INFO L226 Difference]: Without dead ends: 32 [2020-07-19 21:45:54,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:45:54,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-19 21:45:54,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2020-07-19 21:45:54,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-19 21:45:54,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-07-19 21:45:54,670 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 17 [2020-07-19 21:45:54,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:45:54,671 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-07-19 21:45:54,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 21:45:54,671 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-07-19 21:45:54,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-19 21:45:54,672 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:45:54,672 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] [2020-07-19 21:45:54,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:45:54,888 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:45:54,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:45:54,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1471852900, now seen corresponding path program 1 times [2020-07-19 21:45:54,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:45:54,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337430143] [2020-07-19 21:45:54,891 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5ce1f05 [2020-07-19 21:45:54,901 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 21:45:54,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1968073958] [2020-07-19 21:45:54,901 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5ce1f05 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 [2020-07-19 21:45:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:45:54,960 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:45:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:45:55,003 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:45:55,050 INFO L174 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2020-07-19 21:45:55,051 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 21:45:55,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:45:55,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:45:55 BoogieIcfgContainer [2020-07-19 21:45:55,300 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 21:45:55,303 INFO L168 Benchmark]: Toolchain (without parser) took 2772.07 ms. Allocated memory was 137.9 MB in the beginning and 234.4 MB in the end (delta: 96.5 MB). Free memory was 101.1 MB in the beginning and 199.2 MB in the end (delta: -98.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-19 21:45:55,304 INFO L168 Benchmark]: CDTParser took 1.30 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-19 21:45:55,305 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.84 ms. Allocated memory is still 137.9 MB. Free memory was 100.7 MB in the beginning and 90.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:55,306 INFO L168 Benchmark]: Boogie Preprocessor took 116.58 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 90.3 MB in the beginning and 179.4 MB in the end (delta: -89.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:55,307 INFO L168 Benchmark]: RCFGBuilder took 495.27 ms. Allocated memory is still 201.9 MB. Free memory was 179.4 MB in the beginning and 162.1 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:55,308 INFO L168 Benchmark]: TraceAbstraction took 1897.09 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 161.5 MB in the beginning and 199.2 MB in the end (delta: -37.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-19 21:45:55,313 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.30 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 256.84 ms. Allocated memory is still 137.9 MB. Free memory was 100.7 MB in the beginning and 90.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.58 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 90.3 MB in the beginning and 179.4 MB in the end (delta: -89.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 495.27 ms. Allocated memory is still 201.9 MB. Free memory was 179.4 MB in the beginning and 162.1 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1897.09 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 161.5 MB in the beginning and 199.2 MB in the end (delta: -37.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] unsigned int N_LIN=__VERIFIER_nondet_uint(); [L15] unsigned int N_COL=__VERIFIER_nondet_uint(); [L16] unsigned int j,k; [L17] int matriz[N_COL][N_LIN], maior; [L19] maior = __VERIFIER_nondet_int() [L20] j=0 VAL [j=0, maior=0, matriz={2:0}, N_COL=1, N_LIN=1] [L20] COND TRUE jmaior [L26] EXPR matriz[j][k] [L26] maior = matriz[j][k] [L21] k++ VAL [j=0, k=1, maior=1, matriz={2:0}, N_COL=1, N_LIN=1] [L21] COND FALSE !(k