/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 interpolation-heuristic=FIRST --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/sum01_bug02.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:10:18,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:10:18,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:10:18,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:10:18,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:10:18,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:10:18,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:10:18,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:10:18,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:10:18,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:10:18,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:10:18,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:10:18,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:10:18,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:10:18,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:10:18,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:10:18,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:10:18,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:10:18,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:10:18,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:10:18,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:10:18,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:10:18,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:10:18,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:10:18,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:10:18,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:10:18,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:10:18,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:10:18,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:10:18,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:10:18,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:10:18,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:10:18,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:10:18,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:10:18,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:10:18,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:10:18,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:10:18,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:10:18,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:10:18,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:10:18,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:10:18,456 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 16:10:18,489 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:10:18,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:10:18,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:10:18,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:10:18,491 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:10:18,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:10:18,492 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:10:18,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:10:18,492 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:10:18,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:10:18,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:10:18,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:10:18,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:10:18,493 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:10:18,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:10:18,494 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:10:18,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:10:18,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:10:18,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:10:18,494 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:10:18,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:10:18,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:10:18,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:10:18,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:10:18,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:10:18,497 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:10:18,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:10:18,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:10:18,498 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:10:18,498 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:10:18,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:10:19,006 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:10:19,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:10:19,012 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:10:19,014 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:10:19,015 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01_bug02.i [2020-09-24 16:10:19,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08c0dedbb/8467142da1c94c9fbbcb36addebf25fb/FLAGda9373022 [2020-09-24 16:10:19,618 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:10:19,619 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum01_bug02.i [2020-09-24 16:10:19,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08c0dedbb/8467142da1c94c9fbbcb36addebf25fb/FLAGda9373022 [2020-09-24 16:10:19,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08c0dedbb/8467142da1c94c9fbbcb36addebf25fb [2020-09-24 16:10:19,985 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:10:19,991 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:10:19,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:10:19,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:10:19,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:10:19,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:10:19" (1/1) ... [2020-09-24 16:10:20,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5631ac0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:20, skipping insertion in model container [2020-09-24 16:10:20,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:10:19" (1/1) ... [2020-09-24 16:10:20,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:10:20,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:10:20,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:10:20,244 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:10:20,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:10:20,281 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:10:20,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:20 WrapperNode [2020-09-24 16:10:20,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:10:20,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:10:20,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:10:20,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:10:20,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:20" (1/1) ... [2020-09-24 16:10:20,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:20" (1/1) ... [2020-09-24 16:10:20,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:20" (1/1) ... [2020-09-24 16:10:20,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:20" (1/1) ... [2020-09-24 16:10:20,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:20" (1/1) ... [2020-09-24 16:10:20,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:20" (1/1) ... [2020-09-24 16:10:20,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:20" (1/1) ... [2020-09-24 16:10:20,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:10:20,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:10:20,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:10:20,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:10:20,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:20" (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 16:10:20,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:10:20,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:10:20,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 16:10:20,481 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:10:20,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:10:20,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 16:10:20,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 16:10:20,481 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:10:20,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:10:20,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:10:20,679 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:10:20,679 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 16:10:20,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:10:20 BoogieIcfgContainer [2020-09-24 16:10:20,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:10:20,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:10:20,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:10:20,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:10:20,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:10:19" (1/3) ... [2020-09-24 16:10:20,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@356d8f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:10:20, skipping insertion in model container [2020-09-24 16:10:20,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:20" (2/3) ... [2020-09-24 16:10:20,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@356d8f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:10:20, skipping insertion in model container [2020-09-24 16:10:20,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:10:20" (3/3) ... [2020-09-24 16:10:20,694 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01_bug02.i [2020-09-24 16:10:20,709 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:10:20,730 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:10:20,770 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:10:20,808 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:10:20,808 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:10:20,808 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:10:20,809 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:10:20,809 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:10:20,809 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:10:20,809 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:10:20,810 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:10:20,835 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-09-24 16:10:20,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-24 16:10:20,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:10:20,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:10:20,844 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:10:20,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:10:20,854 INFO L82 PathProgramCache]: Analyzing trace with hash 79158399, now seen corresponding path program 1 times [2020-09-24 16:10:20,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:10:20,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187061876] [2020-09-24 16:10:20,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:10:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:20,998 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:20,999 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:20,999 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:20,999 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:20,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 16:10:20,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:20,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 16:10:21,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:21,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:10:21,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 16:10:21,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:10:21,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:10:21,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:10:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:21,036 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:21,036 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:21,036 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:21,037 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:21,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:10:21,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:21,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:10:21,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:21,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:10:21,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:10:21,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:10:21,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:10:21,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:10:21,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187061876] [2020-09-24 16:10:21,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:10:21,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-24 16:10:21,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469692507] [2020-09-24 16:10:21,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-24 16:10:21,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:10:21,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-24 16:10:21,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 16:10:21,076 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-09-24 16:10:21,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:10:21,104 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-09-24 16:10:21,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-24 16:10:21,106 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-09-24 16:10:21,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:10:21,117 INFO L225 Difference]: With dead ends: 41 [2020-09-24 16:10:21,117 INFO L226 Difference]: Without dead ends: 24 [2020-09-24 16:10:21,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 16:10:21,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-24 16:10:21,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-24 16:10:21,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-24 16:10:21,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-09-24 16:10:21,164 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 15 [2020-09-24 16:10:21,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:10:21,165 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-09-24 16:10:21,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-24 16:10:21,165 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-09-24 16:10:21,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-24 16:10:21,166 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:10:21,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:10:21,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:10:21,167 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:10:21,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:10:21,167 INFO L82 PathProgramCache]: Analyzing trace with hash 62535021, now seen corresponding path program 1 times [2020-09-24 16:10:21,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:10:21,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029980245] [2020-09-24 16:10:21,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:10:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:21,210 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:21,210 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:21,210 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:21,211 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:21,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 16:10:21,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:21,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 16:10:21,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:21,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:10:21,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 16:10:21,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 16:10:21,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:10:21,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:10:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:21,286 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:21,286 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:21,287 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:21,287 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:21,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:10:21,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:21,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:10:21,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:21,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:10:21,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:10:21,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:10:21,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:10:21,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:10:21,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029980245] [2020-09-24 16:10:21,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:10:21,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 16:10:21,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363205482] [2020-09-24 16:10:21,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:10:21,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:10:21,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:10:21,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:10:21,298 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2020-09-24 16:10:21,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:10:21,344 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-09-24 16:10:21,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:10:21,345 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-24 16:10:21,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:10:21,347 INFO L225 Difference]: With dead ends: 38 [2020-09-24 16:10:21,347 INFO L226 Difference]: Without dead ends: 33 [2020-09-24 16:10:21,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:10:21,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-24 16:10:21,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-09-24 16:10:21,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-24 16:10:21,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-09-24 16:10:21,357 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 15 [2020-09-24 16:10:21,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:10:21,357 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-09-24 16:10:21,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:10:21,358 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-09-24 16:10:21,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 16:10:21,359 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:10:21,359 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] [2020-09-24 16:10:21,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:10:21,360 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:10:21,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:10:21,361 INFO L82 PathProgramCache]: Analyzing trace with hash 268436001, now seen corresponding path program 1 times [2020-09-24 16:10:21,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:10:21,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992950230] [2020-09-24 16:10:21,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:10:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:21,484 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:21,486 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:21,487 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:21,487 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:21,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 16:10:21,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:21,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 16:10:21,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:21,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 16:10:21,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 16:10:21,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 16:10:21,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:10:21,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:10:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:21,785 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:21,785 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:21,786 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:21,786 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:21,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:10:21,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:21,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:10:21,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:21,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:10:21,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:10:21,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:10:21,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:10:21,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:10:21,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992950230] [2020-09-24 16:10:21,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:10:21,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 16:10:21,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514534304] [2020-09-24 16:10:21,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 16:10:21,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:10:21,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 16:10:21,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-24 16:10:21,799 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 11 states. [2020-09-24 16:10:22,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:10:22,079 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2020-09-24 16:10:22,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 16:10:22,080 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2020-09-24 16:10:22,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:10:22,083 INFO L225 Difference]: With dead ends: 60 [2020-09-24 16:10:22,083 INFO L226 Difference]: Without dead ends: 55 [2020-09-24 16:10:22,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-09-24 16:10:22,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-24 16:10:22,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 42. [2020-09-24 16:10:22,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 16:10:22,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-09-24 16:10:22,094 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 24 [2020-09-24 16:10:22,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:10:22,095 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-09-24 16:10:22,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 16:10:22,095 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-09-24 16:10:22,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-24 16:10:22,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:10:22,097 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:10:22,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:10:22,097 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:10:22,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:10:22,098 INFO L82 PathProgramCache]: Analyzing trace with hash -635017609, now seen corresponding path program 1 times [2020-09-24 16:10:22,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:10:22,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926418849] [2020-09-24 16:10:22,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:10:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:22,142 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:22,145 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:22,145 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:22,145 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:22,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 16:10:22,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:22,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 16:10:22,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:22,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 16:10:22,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:10:22,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 16:10:22,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:10:22,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:10:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:22,253 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:22,253 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:22,253 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:22,254 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:22,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:10:22,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:22,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:10:22,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:22,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:10:22,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:10:22,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:10:22,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:10:22,259 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:10:22,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926418849] [2020-09-24 16:10:22,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:10:22,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 16:10:22,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077726339] [2020-09-24 16:10:22,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 16:10:22,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:10:22,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 16:10:22,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:10:22,262 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 8 states. [2020-09-24 16:10:22,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:10:22,378 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2020-09-24 16:10:22,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 16:10:22,378 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-09-24 16:10:22,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:10:22,380 INFO L225 Difference]: With dead ends: 60 [2020-09-24 16:10:22,380 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 16:10:22,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-24 16:10:22,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 16:10:22,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2020-09-24 16:10:22,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-24 16:10:22,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-09-24 16:10:22,387 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2020-09-24 16:10:22,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:10:22,387 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-09-24 16:10:22,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 16:10:22,388 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-09-24 16:10:22,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 16:10:22,389 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:10:22,389 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:10:22,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:10:22,389 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:10:22,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:10:22,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1260601325, now seen corresponding path program 2 times [2020-09-24 16:10:22,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:10:22,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42680184] [2020-09-24 16:10:22,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:10:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:22,477 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:22,477 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:22,477 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:22,477 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:22,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 16:10:22,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:22,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 16:10:22,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:22,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 16:10:22,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 16:10:22,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 16:10:22,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:10:22,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:10:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:22,850 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:22,851 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:22,851 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:22,851 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:22,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:10:22,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:22,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:10:22,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:22,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:10:22,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:10:22,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:10:22,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:10:22,860 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:10:22,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42680184] [2020-09-24 16:10:22,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:10:22,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 16:10:22,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741462074] [2020-09-24 16:10:22,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 16:10:22,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:10:22,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 16:10:22,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-09-24 16:10:22,866 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 14 states. [2020-09-24 16:10:23,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:10:23,297 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2020-09-24 16:10:23,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 16:10:23,300 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2020-09-24 16:10:23,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:10:23,301 INFO L225 Difference]: With dead ends: 59 [2020-09-24 16:10:23,301 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 16:10:23,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2020-09-24 16:10:23,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 16:10:23,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 44. [2020-09-24 16:10:23,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 16:10:23,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2020-09-24 16:10:23,315 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 33 [2020-09-24 16:10:23,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:10:23,317 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2020-09-24 16:10:23,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 16:10:23,318 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2020-09-24 16:10:23,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-24 16:10:23,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:10:23,320 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:10:23,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:10:23,320 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:10:23,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:10:23,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1220208573, now seen corresponding path program 2 times [2020-09-24 16:10:23,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:10:23,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846269472] [2020-09-24 16:10:23,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:10:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:23,402 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:23,402 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:23,403 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:23,403 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:23,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-24 16:10:23,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:23,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 16:10:23,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:23,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 16:10:23,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:10:23,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 16:10:23,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:10:23,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:10:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:23,530 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:23,530 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:23,530 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:23,530 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:23,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:10:23,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:23,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:10:23,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:23,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:10:23,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:10:23,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:10:23,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 16:10:23,543 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:10:23,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846269472] [2020-09-24 16:10:23,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:10:23,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 16:10:23,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971698303] [2020-09-24 16:10:23,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 16:10:23,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:10:23,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 16:10:23,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-24 16:10:23,547 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 12 states. [2020-09-24 16:10:23,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:10:23,743 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2020-09-24 16:10:23,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 16:10:23,743 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-09-24 16:10:23,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:10:23,744 INFO L225 Difference]: With dead ends: 70 [2020-09-24 16:10:23,745 INFO L226 Difference]: Without dead ends: 56 [2020-09-24 16:10:23,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-09-24 16:10:23,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-24 16:10:23,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2020-09-24 16:10:23,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 16:10:23,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-09-24 16:10:23,752 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 41 [2020-09-24 16:10:23,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:10:23,753 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-09-24 16:10:23,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 16:10:23,753 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-09-24 16:10:23,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-24 16:10:23,754 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:10:23,755 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:10:23,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 16:10:23,755 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:10:23,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:10:23,756 INFO L82 PathProgramCache]: Analyzing trace with hash 765701111, now seen corresponding path program 3 times [2020-09-24 16:10:23,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:10:23,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771375098] [2020-09-24 16:10:23,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:10:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:23,812 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:23,812 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:23,812 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:23,813 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:23,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 16:10:23,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:23,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 16:10:23,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:23,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 16:10:23,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:10:23,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 16:10:23,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:10:23,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:10:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:23,996 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:23,996 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:23,997 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:23,997 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:23,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:10:23,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:23,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:10:23,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:23,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:10:23,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:10:23,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:10:23,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:10:24,003 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 22 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:10:24,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771375098] [2020-09-24 16:10:24,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:10:24,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 16:10:24,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719016096] [2020-09-24 16:10:24,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 16:10:24,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:10:24,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 16:10:24,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-09-24 16:10:24,006 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 16 states. [2020-09-24 16:10:24,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:10:24,309 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2020-09-24 16:10:24,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 16:10:24,309 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 50 [2020-09-24 16:10:24,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:10:24,310 INFO L225 Difference]: With dead ends: 79 [2020-09-24 16:10:24,311 INFO L226 Difference]: Without dead ends: 65 [2020-09-24 16:10:24,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2020-09-24 16:10:24,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-24 16:10:24,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2020-09-24 16:10:24,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 16:10:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2020-09-24 16:10:24,319 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 50 [2020-09-24 16:10:24,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:10:24,319 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2020-09-24 16:10:24,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 16:10:24,319 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2020-09-24 16:10:24,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-24 16:10:24,320 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:10:24,321 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:10:24,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 16:10:24,321 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:10:24,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:10:24,322 INFO L82 PathProgramCache]: Analyzing trace with hash -258080061, now seen corresponding path program 4 times [2020-09-24 16:10:24,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:10:24,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406004041] [2020-09-24 16:10:24,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:10:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:24,391 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:24,392 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:24,392 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:24,392 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:24,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 16:10:24,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:24,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 16:10:24,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:24,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 16:10:24,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:10:24,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 16:10:24,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:10:24,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:10:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:24,620 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:24,621 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:24,621 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:24,621 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:24,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:10:24,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:24,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:10:24,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:24,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:10:24,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:10:24,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:10:24,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:10:24,629 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 29 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:10:24,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406004041] [2020-09-24 16:10:24,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:10:24,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 16:10:24,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194133144] [2020-09-24 16:10:24,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 16:10:24,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:10:24,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 16:10:24,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2020-09-24 16:10:24,632 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand 20 states. [2020-09-24 16:10:25,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:10:25,006 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2020-09-24 16:10:25,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-24 16:10:25,007 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 59 [2020-09-24 16:10:25,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:10:25,010 INFO L225 Difference]: With dead ends: 87 [2020-09-24 16:10:25,010 INFO L226 Difference]: Without dead ends: 73 [2020-09-24 16:10:25,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=295, Invalid=965, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 16:10:25,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-24 16:10:25,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-09-24 16:10:25,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-24 16:10:25,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2020-09-24 16:10:25,025 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 59 [2020-09-24 16:10:25,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:10:25,028 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2020-09-24 16:10:25,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 16:10:25,029 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2020-09-24 16:10:25,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-24 16:10:25,030 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:10:25,030 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:10:25,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 16:10:25,031 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:10:25,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:10:25,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1030394231, now seen corresponding path program 5 times [2020-09-24 16:10:25,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:10:25,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345723645] [2020-09-24 16:10:25,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:10:25,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 16:10:25,068 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 16:10:25,068 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 16:10:25,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 16:10:25,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:10:25 BoogieIcfgContainer [2020-09-24 16:10:25,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:10:25,108 INFO L168 Benchmark]: Toolchain (without parser) took 5113.77 ms. Allocated memory was 139.5 MB in the beginning and 279.4 MB in the end (delta: 140.0 MB). Free memory was 102.4 MB in the beginning and 240.6 MB in the end (delta: -138.2 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-09-24 16:10:25,110 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 16:10:25,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.55 ms. Allocated memory is still 139.5 MB. Free memory was 101.9 MB in the beginning and 92.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-24 16:10:25,112 INFO L168 Benchmark]: Boogie Preprocessor took 117.14 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 92.0 MB in the beginning and 180.9 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-24 16:10:25,113 INFO L168 Benchmark]: RCFGBuilder took 284.32 ms. Allocated memory is still 201.9 MB. Free memory was 180.5 MB in the beginning and 167.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-24 16:10:25,116 INFO L168 Benchmark]: TraceAbstraction took 4412.18 ms. Allocated memory was 201.9 MB in the beginning and 279.4 MB in the end (delta: 77.6 MB). Free memory was 167.7 MB in the beginning and 240.6 MB in the end (delta: -72.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-09-24 16:10:25,126 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 288.55 ms. Allocated memory is still 139.5 MB. Free memory was 101.9 MB in the beginning and 92.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.14 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 92.0 MB in the beginning and 180.9 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 284.32 ms. Allocated memory is still 201.9 MB. Free memory was 180.5 MB in the beginning and 167.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4412.18 ms. Allocated memory was 201.9 MB in the beginning and 279.4 MB in the end (delta: 77.6 MB). Free memory was 167.7 MB in the beginning and 240.6 MB in the end (delta: -72.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, j=10, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, j=10, n=__VERIFIER_nondet_uint(), sn=0; [L13] i=1 [L13] COND TRUE i<=n [L14] COND TRUE i