/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --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/nec40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:27:38,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:27:38,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:27:38,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:27:38,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:27:38,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:27:38,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:27:38,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:27:38,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:27:38,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:27:38,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:27:38,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:27:38,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:27:38,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:27:38,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:27:38,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:27:38,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:27:38,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:27:38,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:27:38,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:27:38,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:27:38,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:27:38,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:27:38,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:27:38,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:27:38,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:27:38,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:27:38,258 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:27:38,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:27:38,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:27:38,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:27:38,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:27:38,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:27:38,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:27:38,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:27:38,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:27:38,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:27:38,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:27:38,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:27:38,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:27:38,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:27:38,275 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 [2020-08-21 17:27:38,297 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:27:38,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:27:38,298 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:27:38,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:27:38,299 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:27:38,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:27:38,299 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:27:38,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:27:38,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:27:38,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:27:38,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:27:38,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:27:38,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:27:38,301 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:27:38,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:27:38,301 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:27:38,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:27:38,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:27:38,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:27:38,302 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:27:38,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:27:38,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:27:38,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:27:38,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:27:38,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:27:38,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:27:38,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:27:38,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:27:38,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:27:38,304 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-08-21 17:27:38,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:27:38,649 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:27:38,653 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:27:38,654 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:27:38,655 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:27:38,656 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/nec40.c [2020-08-21 17:27:38,734 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f14e2d07/4fa92917ded341d5aa6f4bbbd19d77dc/FLAGfdce3b42d [2020-08-21 17:27:39,208 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:27:39,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/nec40.c [2020-08-21 17:27:39,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f14e2d07/4fa92917ded341d5aa6f4bbbd19d77dc/FLAGfdce3b42d [2020-08-21 17:27:39,567 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f14e2d07/4fa92917ded341d5aa6f4bbbd19d77dc [2020-08-21 17:27:39,578 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:27:39,580 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:27:39,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:27:39,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:27:39,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:27:39,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:27:39" (1/1) ... [2020-08-21 17:27:39,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e37eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:27:39, skipping insertion in model container [2020-08-21 17:27:39,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:27:39" (1/1) ... [2020-08-21 17:27:39,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:27:39,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:27:39,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:27:39,858 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:27:39,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:27:39,904 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:27:39,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:27:39 WrapperNode [2020-08-21 17:27:39,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:27:39,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:27:39,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:27:39,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:27:40,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:27:39" (1/1) ... [2020-08-21 17:27:40,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:27:39" (1/1) ... [2020-08-21 17:27:40,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:27:39" (1/1) ... [2020-08-21 17:27:40,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:27:39" (1/1) ... [2020-08-21 17:27:40,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:27:39" (1/1) ... [2020-08-21 17:27:40,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:27:39" (1/1) ... [2020-08-21 17:27:40,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:27:39" (1/1) ... [2020-08-21 17:27:40,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:27:40,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:27:40,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:27:40,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:27:40,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:27:39" (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 [2020-08-21 17:27:40,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:27:40,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:27:40,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 17:27:40,101 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:27:40,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:27:40,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 17:27:40,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:27:40,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:27:40,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:27:40,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:27:40,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:27:40,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:27:40,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:27:40,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:27:40,369 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:27:40,369 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 17:27:40,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:27:40 BoogieIcfgContainer [2020-08-21 17:27:40,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:27:40,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:27:40,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:27:40,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:27:40,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:27:39" (1/3) ... [2020-08-21 17:27:40,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d02b9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:27:40, skipping insertion in model container [2020-08-21 17:27:40,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:27:39" (2/3) ... [2020-08-21 17:27:40,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d02b9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:27:40, skipping insertion in model container [2020-08-21 17:27:40,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:27:40" (3/3) ... [2020-08-21 17:27:40,397 INFO L109 eAbstractionObserver]: Analyzing ICFG nec40.c [2020-08-21 17:27:40,409 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:27:40,416 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:27:40,447 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:27:40,465 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:27:40,465 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:27:40,465 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:27:40,465 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:27:40,465 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:27:40,466 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:27:40,466 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:27:40,466 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:27:40,483 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-08-21 17:27:40,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-21 17:27:40,489 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:27:40,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:27:40,491 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:27:40,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:27:40,497 INFO L82 PathProgramCache]: Analyzing trace with hash -91485938, now seen corresponding path program 1 times [2020-08-21 17:27:40,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:27:40,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741782766] [2020-08-21 17:27:40,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:27:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:27:40,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:27:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:27:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:27:40,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741782766] [2020-08-21 17:27:40,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:27:40,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 17:27:40,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035862453] [2020-08-21 17:27:40,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 17:27:40,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:27:40,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 17:27:40,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:27:40,769 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2020-08-21 17:27:40,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:27:40,874 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2020-08-21 17:27:40,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 17:27:40,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-08-21 17:27:40,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:27:40,887 INFO L225 Difference]: With dead ends: 38 [2020-08-21 17:27:40,887 INFO L226 Difference]: Without dead ends: 16 [2020-08-21 17:27:40,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:27:40,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-08-21 17:27:40,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-08-21 17:27:40,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-08-21 17:27:40,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-08-21 17:27:40,933 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2020-08-21 17:27:40,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:27:40,933 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-08-21 17:27:40,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 17:27:40,934 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-08-21 17:27:40,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-21 17:27:40,935 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:27:40,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:27:40,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:27:40,936 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:27:40,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:27:40,936 INFO L82 PathProgramCache]: Analyzing trace with hash 883179888, now seen corresponding path program 1 times [2020-08-21 17:27:40,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:27:40,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805523554] [2020-08-21 17:27:40,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:27:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:27:41,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:27:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:27:41,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:27:41,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805523554] [2020-08-21 17:27:41,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:27:41,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:27:41,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259434126] [2020-08-21 17:27:41,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:27:41,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:27:41,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:27:41,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:27:41,088 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 4 states. [2020-08-21 17:27:41,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:27:41,196 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-08-21 17:27:41,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 17:27:41,197 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-08-21 17:27:41,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:27:41,198 INFO L225 Difference]: With dead ends: 26 [2020-08-21 17:27:41,198 INFO L226 Difference]: Without dead ends: 18 [2020-08-21 17:27:41,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:27:41,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-08-21 17:27:41,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-08-21 17:27:41,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-08-21 17:27:41,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-08-21 17:27:41,207 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2020-08-21 17:27:41,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:27:41,207 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-08-21 17:27:41,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:27:41,208 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-08-21 17:27:41,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 17:27:41,208 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:27:41,209 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:27:41,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:27:41,209 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:27:41,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:27:41,210 INFO L82 PathProgramCache]: Analyzing trace with hash 975532875, now seen corresponding path program 1 times [2020-08-21 17:27:41,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:27:41,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110414064] [2020-08-21 17:27:41,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:27:41,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:27:41,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:27:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:27:41,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:27:41,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110414064] [2020-08-21 17:27:41,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:27:41,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:27:41,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387391194] [2020-08-21 17:27:41,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 17:27:41,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:27:41,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 17:27:41,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:27:41,351 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 5 states. [2020-08-21 17:27:41,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:27:41,426 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-08-21 17:27:41,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 17:27:41,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-08-21 17:27:41,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:27:41,428 INFO L225 Difference]: With dead ends: 18 [2020-08-21 17:27:41,428 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 17:27:41,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:27:41,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 17:27:41,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 17:27:41,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 17:27:41,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 17:27:41,430 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-08-21 17:27:41,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:27:41,430 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 17:27:41,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 17:27:41,431 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 17:27:41,431 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 17:27:41,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:27:41,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 17:27:41,579 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-21 17:27:41,580 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~j~0 |old(~j~0)|) (= |~#x~0.offset| |old(~#x~0.offset)|) (= |~#y~0.offset| |old(~#y~0.offset)|) (= ~i~0 |old(~i~0)|) (= |old(#length)| |#length|) (= ~k~0 |old(~k~0)|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.base| |old(#NULL.base)|) (= |~#x~0.base| |old(~#x~0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |~#y~0.base| |old(~#y~0.base)|)) [2020-08-21 17:27:41,580 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 17:27:41,580 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 17:27:41,581 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (<= ~i~0 0)) [2020-08-21 17:27:41,581 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 17:27:41,581 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 17:27:41,581 INFO L268 CegarLoopResult]: For program point L25(lines 25 26) no Hoare annotation was computed. [2020-08-21 17:27:41,581 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 29) no Hoare annotation was computed. [2020-08-21 17:27:41,581 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 29) no Hoare annotation was computed. [2020-08-21 17:27:41,582 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 14 29) the Hoare annotation is: (or (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (not (<= |old(~i~0)| 0)) (and (= ~i~0 |old(~i~0)|) (= ~k~0 |old(~k~0)|) (= |#memory_int| |old(#memory_int)|))) [2020-08-21 17:27:41,582 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (or (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (not (<= |old(~i~0)| 0))) [2020-08-21 17:27:41,582 INFO L268 CegarLoopResult]: For program point L24(lines 24 26) no Hoare annotation was computed. [2020-08-21 17:27:41,582 INFO L268 CegarLoopResult]: For program point L24-1(lines 24 26) no Hoare annotation was computed. [2020-08-21 17:27:41,582 INFO L268 CegarLoopResult]: For program point L18-1(lines 18 21) no Hoare annotation was computed. [2020-08-21 17:27:41,583 INFO L264 CegarLoopResult]: At program point L18-3(lines 18 21) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (and (= (select |#memory_int| |~#x~0.base|) .cse0) (<= ~i~0 0)) (not (= .cse0 (select |old(#memory_int)| |~#x~0.base|))) (not (<= |old(~i~0)| 0)))) [2020-08-21 17:27:41,583 INFO L268 CegarLoopResult]: For program point L18-4(lines 18 21) no Hoare annotation was computed. [2020-08-21 17:27:41,583 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-08-21 17:27:41,583 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-08-21 17:27:41,583 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-21 17:27:41,583 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-08-21 17:27:41,584 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-08-21 17:27:41,584 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-08-21 17:27:41,593 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:238) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:693) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:217) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-08-21 17:27:41,598 INFO L168 Benchmark]: Toolchain (without parser) took 2017.14 ms. Allocated memory was 138.9 MB in the beginning and 233.8 MB in the end (delta: 94.9 MB). Free memory was 101.3 MB in the beginning and 186.4 MB in the end (delta: -85.2 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB. [2020-08-21 17:27:41,599 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-21 17:27:41,600 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.47 ms. Allocated memory is still 138.9 MB. Free memory was 101.0 MB in the beginning and 91.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-08-21 17:27:41,601 INFO L168 Benchmark]: Boogie Preprocessor took 135.54 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 91.0 MB in the beginning and 179.3 MB in the end (delta: -88.3 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-21 17:27:41,602 INFO L168 Benchmark]: RCFGBuilder took 331.98 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 164.3 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-08-21 17:27:41,603 INFO L168 Benchmark]: TraceAbstraction took 1208.04 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 163.7 MB in the beginning and 186.4 MB in the end (delta: -22.8 MB). Peak memory consumption was 84.0 MB. Max. memory is 7.1 GB. [2020-08-21 17:27:41,607 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 324.47 ms. Allocated memory is still 138.9 MB. Free memory was 101.0 MB in the beginning and 91.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.54 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 91.0 MB in the beginning and 179.3 MB in the end (delta: -88.3 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 331.98 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 164.3 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1208.04 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 163.7 MB in the beginning and 186.4 MB in the end (delta: -22.8 MB). Peak memory consumption was 84.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:238) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...