/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 FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -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-c90d42b [2020-09-24 22:55:26,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:55:26,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:55:26,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:55:26,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:55:26,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:55:26,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:55:26,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:55:26,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:55:26,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:55:26,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:55:26,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:55:26,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:55:26,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:55:26,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:55:26,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:55:26,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:55:26,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:55:26,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:55:26,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:55:26,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:55:26,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:55:26,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:55:26,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:55:26,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:55:26,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:55:26,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:55:26,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:55:26,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:55:26,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:55:27,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:55:27,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:55:27,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:55:27,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:55:27,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:55:27,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:55:27,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:55:27,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:55:27,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:55:27,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:55:27,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:55:27,010 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 22:55:27,061 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:55:27,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:55:27,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:55:27,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:55:27,064 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:55:27,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:55:27,065 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:55:27,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:55:27,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:55:27,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:55:27,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:55:27,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:55:27,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:55:27,068 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:55:27,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:55:27,068 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:55:27,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:55:27,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:55:27,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:55:27,069 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:55:27,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:55:27,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:55:27,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:55:27,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:55:27,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:55:27,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:55:27,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:55:27,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:55:27,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:55:27,071 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:55:27,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:55:27,541 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:55:27,547 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:55:27,549 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:55:27,550 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:55:27,551 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/matrix-2.c [2020-09-24 22:55:27,637 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e2576ccc/0145ceffc4c64ec6a068b078292c5c4f/FLAG4e9da7192 [2020-09-24 22:55:28,178 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:55:28,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/matrix-2.c [2020-09-24 22:55:28,187 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e2576ccc/0145ceffc4c64ec6a068b078292c5c4f/FLAG4e9da7192 [2020-09-24 22:55:28,516 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e2576ccc/0145ceffc4c64ec6a068b078292c5c4f [2020-09-24 22:55:28,530 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:55:28,535 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:55:28,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:55:28,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:55:28,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:55:28,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:55:28" (1/1) ... [2020-09-24 22:55:28,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68901205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:28, skipping insertion in model container [2020-09-24 22:55:28,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:55:28" (1/1) ... [2020-09-24 22:55:28,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:55:28,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:55:28,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:55:28,891 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:55:28,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:55:28,946 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:55:28,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:28 WrapperNode [2020-09-24 22:55:28,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:55:28,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:55:28,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:55:28,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:55:29,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:28" (1/1) ... [2020-09-24 22:55:29,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:28" (1/1) ... [2020-09-24 22:55:29,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:28" (1/1) ... [2020-09-24 22:55:29,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:28" (1/1) ... [2020-09-24 22:55:29,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:28" (1/1) ... [2020-09-24 22:55:29,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:28" (1/1) ... [2020-09-24 22:55:29,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:28" (1/1) ... [2020-09-24 22:55:29,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:55:29,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:55:29,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:55:29,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:55:29,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-24 22:55:29,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:55:29,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:55:29,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 22:55:29,168 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:55:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:55:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 22:55:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 22:55:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:55:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:55:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 22:55:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 22:55:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 22:55:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:55:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:55:29,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:55:29,537 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:55:29,538 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 22:55:29,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:55:29 BoogieIcfgContainer [2020-09-24 22:55:29,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:55:29,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:55:29,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:55:29,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:55:29,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:55:28" (1/3) ... [2020-09-24 22:55:29,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d21f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:55:29, skipping insertion in model container [2020-09-24 22:55:29,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:28" (2/3) ... [2020-09-24 22:55:29,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d21f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:55:29, skipping insertion in model container [2020-09-24 22:55:29,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:55:29" (3/3) ... [2020-09-24 22:55:29,555 INFO L109 eAbstractionObserver]: Analyzing ICFG matrix-2.c [2020-09-24 22:55:29,567 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:55:29,579 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:55:29,599 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:55:29,627 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:55:29,627 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:55:29,628 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:55:29,628 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:55:29,628 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:55:29,628 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:55:29,628 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:55:29,628 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:55:29,653 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-09-24 22:55:29,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 22:55:29,661 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:29,662 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:29,662 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:29,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:29,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1292931923, now seen corresponding path program 1 times [2020-09-24 22:55:29,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:29,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311738657] [2020-09-24 22:55:29,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:29,806 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-24 22:55:29,807 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-24 22:55:29,807 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 22:55:29,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:55:29,831 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-24 22:55:29,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:55:29 BoogieIcfgContainer [2020-09-24 22:55:29,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:55:29,836 INFO L168 Benchmark]: Toolchain (without parser) took 1301.86 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 103.3 MB in the beginning and 151.5 MB in the end (delta: -48.2 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:29,837 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 22:55:29,838 INFO L168 Benchmark]: CACSL2BoogieTranslator took 411.39 ms. Allocated memory is still 141.0 MB. Free memory was 102.7 MB in the beginning and 92.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:29,840 INFO L168 Benchmark]: Boogie Preprocessor took 147.95 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 92.4 MB in the beginning and 182.9 MB in the end (delta: -90.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:29,841 INFO L168 Benchmark]: RCFGBuilder took 448.49 ms. Allocated memory is still 205.5 MB. Free memory was 182.9 MB in the beginning and 163.8 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:29,842 INFO L168 Benchmark]: TraceAbstraction took 285.91 ms. Allocated memory is still 205.5 MB. Free memory was 163.1 MB in the beginning and 151.5 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:29,847 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 411.39 ms. Allocated memory is still 141.0 MB. Free memory was 102.7 MB in the beginning and 92.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 147.95 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 92.4 MB in the beginning and 182.9 MB in the end (delta: -90.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 448.49 ms. Allocated memory is still 205.5 MB. Free memory was 182.9 MB in the beginning and 163.8 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 285.91 ms. Allocated memory is still 205.5 MB. Free memory was 163.1 MB in the beginning and 151.5 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible 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 [L20] COND FALSE !(j