/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 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 17:20:24,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:20:24,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:20:24,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:20:24,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:20:24,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:20:24,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:20:24,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:20:24,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:20:24,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:20:24,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:20:24,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:20:24,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:20:24,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:20:24,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:20:24,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:20:24,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:20:24,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:20:24,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:20:24,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:20:24,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:20:24,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:20:24,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:20:24,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:20:24,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:20:24,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:20:24,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:20:24,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:20:24,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:20:24,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:20:24,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:20:24,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:20:24,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:20:24,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:20:24,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:20:24,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:20:24,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:20:24,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:20:24,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:20:24,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:20:24,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:20:24,599 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 17:20:24,647 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:20:24,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:20:24,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:20:24,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:20:24,650 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:20:24,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:20:24,651 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:20:24,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:20:24,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:20:24,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:20:24,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:20:24,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:20:24,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:20:24,653 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:20:24,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:20:24,654 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:20:24,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:20:24,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:20:24,654 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:20:24,655 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:20:24,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:20:24,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:20:24,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:20:24,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:20:24,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:20:24,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:20:24,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:20:24,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:20:24,656 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:20:24,657 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;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;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;log-additional-information=true; [2020-09-24 17:20:25,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:20:25,175 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:20:25,182 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:20:25,184 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:20:25,185 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:20:25,186 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/matrix-2.c [2020-09-24 17:20:25,272 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3213374d/a0eb9a1f04184903a079aea56754f7e9/FLAG456a13cc0 [2020-09-24 17:20:25,833 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:20:25,834 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/matrix-2.c [2020-09-24 17:20:25,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3213374d/a0eb9a1f04184903a079aea56754f7e9/FLAG456a13cc0 [2020-09-24 17:20:26,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3213374d/a0eb9a1f04184903a079aea56754f7e9 [2020-09-24 17:20:26,200 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:20:26,206 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:20:26,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:20:26,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:20:26,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:20:26,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:20:26" (1/1) ... [2020-09-24 17:20:26,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5273b47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:26, skipping insertion in model container [2020-09-24 17:20:26,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:20:26" (1/1) ... [2020-09-24 17:20:26,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:20:26,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:20:26,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:20:26,479 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:20:26,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:20:26,537 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:20:26,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:26 WrapperNode [2020-09-24 17:20:26,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:20:26,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:20:26,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:20:26,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:20:26,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:26" (1/1) ... [2020-09-24 17:20:26,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:26" (1/1) ... [2020-09-24 17:20:26,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:26" (1/1) ... [2020-09-24 17:20:26,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:26" (1/1) ... [2020-09-24 17:20:26,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:26" (1/1) ... [2020-09-24 17:20:26,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:26" (1/1) ... [2020-09-24 17:20:26,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:26" (1/1) ... [2020-09-24 17:20:26,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:20:26,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:20:26,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:20:26,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:20:26,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:26" (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 17:20:26,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:20:26,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:20:26,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 17:20:26,767 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:20:26,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:20:26,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 17:20:26,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 17:20:26,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:20:26,768 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:20:26,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 17:20:26,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 17:20:26,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 17:20:26,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 17:20:26,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:20:26,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:20:27,163 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:20:27,163 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 17:20:27,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:20:27 BoogieIcfgContainer [2020-09-24 17:20:27,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:20:27,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:20:27,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:20:27,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:20:27,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:20:26" (1/3) ... [2020-09-24 17:20:27,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2437956c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:20:27, skipping insertion in model container [2020-09-24 17:20:27,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:26" (2/3) ... [2020-09-24 17:20:27,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2437956c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:20:27, skipping insertion in model container [2020-09-24 17:20:27,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:20:27" (3/3) ... [2020-09-24 17:20:27,184 INFO L109 eAbstractionObserver]: Analyzing ICFG matrix-2.c [2020-09-24 17:20:27,193 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:20:27,202 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:20:27,223 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:20:27,252 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:20:27,253 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:20:27,253 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:20:27,253 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:20:27,253 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:20:27,253 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:20:27,253 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:20:27,253 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:20:27,277 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-09-24 17:20:27,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 17:20:27,285 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:20:27,286 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 17:20:27,287 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:20:27,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:20:27,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1292931923, now seen corresponding path program 1 times [2020-09-24 17:20:27,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:20:27,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280358573] [2020-09-24 17:20:27,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:20:27,422 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-24 17:20:27,422 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-24 17:20:27,423 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 17:20:27,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:20:27,447 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-24 17:20:27,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:20:27 BoogieIcfgContainer [2020-09-24 17:20:27,447 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 17:20:27,452 INFO L168 Benchmark]: Toolchain (without parser) took 1247.99 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.4 MB in the beginning and 149.0 MB in the end (delta: -46.5 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2020-09-24 17:20:27,453 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 17:20:27,454 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.72 ms. Allocated memory is still 140.0 MB. Free memory was 101.8 MB in the beginning and 91.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-24 17:20:27,456 INFO L168 Benchmark]: Boogie Preprocessor took 137.08 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 91.5 MB in the beginning and 180.7 MB in the end (delta: -89.2 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-24 17:20:27,457 INFO L168 Benchmark]: RCFGBuilder took 493.96 ms. Allocated memory is still 203.4 MB. Free memory was 180.7 MB in the beginning and 161.6 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-09-24 17:20:27,458 INFO L168 Benchmark]: TraceAbstraction took 270.85 ms. Allocated memory is still 203.4 MB. Free memory was 160.9 MB in the beginning and 149.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2020-09-24 17:20:27,464 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 330.72 ms. Allocated memory is still 140.0 MB. Free memory was 101.8 MB in the beginning and 91.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.08 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 91.5 MB in the beginning and 180.7 MB in the end (delta: -89.2 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 493.96 ms. Allocated memory is still 203.4 MB. Free memory was 180.7 MB in the beginning and 161.6 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 270.85 ms. Allocated memory is still 203.4 MB. Free memory was 160.9 MB in the beginning and 149.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 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