/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/sum04-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:23:52,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:23:52,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:23:52,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:23:52,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:23:52,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:23:52,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:23:52,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:23:52,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:23:52,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:23:52,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:23:52,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:23:52,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:23:52,454 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:23:52,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:23:52,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:23:52,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:23:52,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:23:52,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:23:52,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:23:52,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:23:52,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:23:52,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:23:52,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:23:52,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:23:52,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:23:52,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:23:52,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:23:52,473 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:23:52,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:23:52,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:23:52,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:23:52,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:23:52,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:23:52,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:23:52,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:23:52,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:23:52,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:23:52,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:23:52,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:23:52,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:23:52,483 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 [2020-09-25 11:23:52,511 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:23:52,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:23:52,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:23:52,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:23:52,513 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:23:52,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:23:52,514 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:23:52,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:23:52,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:23:52,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:23:52,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:23:52,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:23:52,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:23:52,515 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:23:52,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:23:52,515 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:23:52,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:23:52,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:23:52,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:23:52,516 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:23:52,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:23:52,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:23:52,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:23:52,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:23:52,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:23:52,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:23:52,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:23:52,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:23:52,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:23:52,518 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:23:53,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:23:53,060 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:23:53,067 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:23:53,069 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:23:53,071 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:23:53,072 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum04-1.i [2020-09-25 11:23:53,167 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41445ce9c/4bcb1ab6787442dc9b6dbcad0fd42dff/FLAG15bffc4da [2020-09-25 11:23:53,699 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:23:53,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum04-1.i [2020-09-25 11:23:53,706 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41445ce9c/4bcb1ab6787442dc9b6dbcad0fd42dff/FLAG15bffc4da [2020-09-25 11:23:54,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41445ce9c/4bcb1ab6787442dc9b6dbcad0fd42dff [2020-09-25 11:23:54,053 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:23:54,061 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:23:54,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:23:54,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:23:54,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:23:54,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:23:54" (1/1) ... [2020-09-25 11:23:54,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67fe5b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:23:54, skipping insertion in model container [2020-09-25 11:23:54,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:23:54" (1/1) ... [2020-09-25 11:23:54,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:23:54,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:23:54,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:23:54,360 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:23:54,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:23:54,392 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:23:54,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:23:54 WrapperNode [2020-09-25 11:23:54,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:23:54,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:23:54,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:23:54,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:23:54,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:23:54" (1/1) ... [2020-09-25 11:23:54,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:23:54" (1/1) ... [2020-09-25 11:23:54,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:23:54" (1/1) ... [2020-09-25 11:23:54,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:23:54" (1/1) ... [2020-09-25 11:23:54,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:23:54" (1/1) ... [2020-09-25 11:23:54,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:23:54" (1/1) ... [2020-09-25 11:23:54,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:23:54" (1/1) ... [2020-09-25 11:23:54,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:23:54,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:23:54,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:23:54,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:23:54,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:23:54" (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 [2020-09-25 11:23:54,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:23:54,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:23:54,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 11:23:54,604 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:23:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:23:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 11:23:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:23:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:23:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:23:54,794 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:23:54,794 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:23:54,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:23:54 BoogieIcfgContainer [2020-09-25 11:23:54,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:23:54,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:23:54,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:23:54,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:23:54,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:23:54" (1/3) ... [2020-09-25 11:23:54,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c19fdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:23:54, skipping insertion in model container [2020-09-25 11:23:54,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:23:54" (2/3) ... [2020-09-25 11:23:54,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c19fdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:23:54, skipping insertion in model container [2020-09-25 11:23:54,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:23:54" (3/3) ... [2020-09-25 11:23:54,808 INFO L109 eAbstractionObserver]: Analyzing ICFG sum04-1.i [2020-09-25 11:23:54,818 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:23:54,828 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:23:54,848 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:23:54,878 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:23:54,878 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:23:54,879 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:23:54,879 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:23:54,879 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:23:54,879 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:23:54,879 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:23:54,879 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:23:54,899 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-25 11:23:54,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-25 11:23:54,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:23:54,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:23:54,908 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:23:54,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:23:54,915 INFO L82 PathProgramCache]: Analyzing trace with hash -649727231, now seen corresponding path program 1 times [2020-09-25 11:23:54,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:23:54,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457705076] [2020-09-25 11:23:54,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:23:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:55,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:55,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:55,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:55,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:23:55,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:23:55,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 11:23:55,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:55,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:55,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:23:55,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:23:55,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:23:55,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:23:55,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:23:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:55,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:55,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:55,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:23:55,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:55,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:23:55,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:55,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:55,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:55,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:23:55,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457705076] [2020-09-25 11:23:55,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:23:55,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:23:55,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965715398] [2020-09-25 11:23:55,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:23:55,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:23:55,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:23:55,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:23:55,340 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-09-25 11:23:55,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:23:55,439 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2020-09-25 11:23:55,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:23:55,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-25 11:23:55,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:23:55,455 INFO L225 Difference]: With dead ends: 48 [2020-09-25 11:23:55,456 INFO L226 Difference]: Without dead ends: 24 [2020-09-25 11:23:55,461 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 [2020-09-25 11:23:55,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-25 11:23:55,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-09-25 11:23:55,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-25 11:23:55,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-09-25 11:23:55,513 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 12 [2020-09-25 11:23:55,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:23:55,514 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-09-25 11:23:55,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:23:55,514 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-09-25 11:23:55,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 11:23:55,515 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:23:55,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:23:55,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:23:55,517 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:23:55,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:23:55,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1659803531, now seen corresponding path program 1 times [2020-09-25 11:23:55,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:23:55,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100396369] [2020-09-25 11:23:55,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:23:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:55,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:55,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:55,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:55,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:23:55,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:23:55,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 11:23:55,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:55,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:55,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:23:55,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:23:55,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:23:55,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:55,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:23:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:55,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:55,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:55,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:23:55,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:55,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:23:55,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:55,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:55,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:55,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:55,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:55,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:55,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:23:55,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100396369] [2020-09-25 11:23:55,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:23:55,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:23:55,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643450557] [2020-09-25 11:23:55,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:23:55,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:23:55,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:23:55,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:23:55,790 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2020-09-25 11:23:55,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:23:55,878 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2020-09-25 11:23:55,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:23:55,879 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-25 11:23:55,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:23:55,881 INFO L225 Difference]: With dead ends: 45 [2020-09-25 11:23:55,881 INFO L226 Difference]: Without dead ends: 29 [2020-09-25 11:23:55,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:23:55,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-25 11:23:55,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2020-09-25 11:23:55,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-25 11:23:55,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-25 11:23:55,889 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 18 [2020-09-25 11:23:55,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:23:55,890 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-25 11:23:55,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:23:55,890 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-25 11:23:55,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 11:23:55,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:23:55,891 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:23:55,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:23:55,892 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:23:55,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:23:55,893 INFO L82 PathProgramCache]: Analyzing trace with hash 891941667, now seen corresponding path program 2 times [2020-09-25 11:23:55,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:23:55,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729171156] [2020-09-25 11:23:55,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:23:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:55,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:55,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:56,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:56,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:56,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:23:56,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:23:56,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-09-25 11:23:56,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:56,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:56,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:23:56,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:23:56,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 11:23:56,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:56,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:23:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:56,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:56,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:56,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:23:56,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:56,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:23:56,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:56,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:56,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:56,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:56,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:56,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:56,283 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:23:56,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729171156] [2020-09-25 11:23:56,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:23:56,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:23:56,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325947026] [2020-09-25 11:23:56,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:23:56,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:23:56,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:23:56,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:23:56,287 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 7 states. [2020-09-25 11:23:56,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:23:56,407 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-09-25 11:23:56,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:23:56,408 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-25 11:23:56,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:23:56,409 INFO L225 Difference]: With dead ends: 45 [2020-09-25 11:23:56,409 INFO L226 Difference]: Without dead ends: 34 [2020-09-25 11:23:56,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:23:56,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-25 11:23:56,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-09-25 11:23:56,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-25 11:23:56,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-09-25 11:23:56,417 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 24 [2020-09-25 11:23:56,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:23:56,418 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-09-25 11:23:56,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:23:56,418 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-09-25 11:23:56,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 11:23:56,419 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:23:56,419 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:23:56,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:23:56,420 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:23:56,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:23:56,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1860713659, now seen corresponding path program 3 times [2020-09-25 11:23:56,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:23:56,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816715479] [2020-09-25 11:23:56,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:23:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:56,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:56,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:56,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:56,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:56,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:56,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 11:23:56,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:23:56,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-09-25 11:23:56,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:56,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:56,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:23:56,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:23:56,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 11:23:56,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:56,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:23:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:56,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:56,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:56,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:23:56,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:56,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:23:56,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:56,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:56,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:56,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:56,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:56,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:56,898 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:23:56,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816715479] [2020-09-25 11:23:56,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:23:56,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:23:56,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535350323] [2020-09-25 11:23:56,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:23:56,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:23:56,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:23:56,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:23:56,901 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 9 states. [2020-09-25 11:23:57,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:23:57,036 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2020-09-25 11:23:57,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:23:57,039 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-09-25 11:23:57,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:23:57,040 INFO L225 Difference]: With dead ends: 44 [2020-09-25 11:23:57,041 INFO L226 Difference]: Without dead ends: 39 [2020-09-25 11:23:57,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:23:57,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-25 11:23:57,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-09-25 11:23:57,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 11:23:57,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-09-25 11:23:57,055 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 30 [2020-09-25 11:23:57,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:23:57,055 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-09-25 11:23:57,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:23:57,056 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-09-25 11:23:57,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 11:23:57,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:23:57,058 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:23:57,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:23:57,058 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:23:57,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:23:57,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1338804338, now seen corresponding path program 1 times [2020-09-25 11:23:57,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:23:57,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771570763] [2020-09-25 11:23:57,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:23:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:57,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:57,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:57,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:57,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:57,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:57,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 11:23:57,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:23:57,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-09-25 11:23:57,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:57,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:57,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:23:57,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:23:57,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 11:23:57,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:57,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:23:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:57,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:57,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:57,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:23:57,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:57,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:23:57,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:57,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:57,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:57,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:57,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:57,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:57,728 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:23:57,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771570763] [2020-09-25 11:23:57,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:23:57,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:23:57,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170000548] [2020-09-25 11:23:57,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:23:57,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:23:57,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:23:57,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:23:57,733 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 11 states. [2020-09-25 11:23:57,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:23:57,930 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2020-09-25 11:23:57,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:23:57,930 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-09-25 11:23:57,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:23:57,934 INFO L225 Difference]: With dead ends: 49 [2020-09-25 11:23:57,934 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 11:23:57,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=219, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:23:57,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 11:23:57,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-09-25 11:23:57,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 11:23:57,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-09-25 11:23:57,943 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 35 [2020-09-25 11:23:57,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:23:57,944 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-09-25 11:23:57,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:23:57,944 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-09-25 11:23:57,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 11:23:57,946 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:23:57,946 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:23:57,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:23:57,946 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:23:57,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:23:57,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1859782885, now seen corresponding path program 2 times [2020-09-25 11:23:57,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:23:57,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195843955] [2020-09-25 11:23:57,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:23:57,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:57,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:58,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:58,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:58,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:58,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:58,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 11:23:58,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:23:58,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 730 [2020-09-25 11:23:58,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:58,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:58,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:23:58,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:23:58,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:23:58,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:58,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:23:58,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:58,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:58,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:58,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:23:58,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:58,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:23:58,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:58,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:58,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:58,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:58,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:58,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:58,803 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:23:58,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195843955] [2020-09-25 11:23:58,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:23:58,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 11:23:58,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798369629] [2020-09-25 11:23:58,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 11:23:58,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:23:58,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 11:23:58,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:23:58,806 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 13 states. [2020-09-25 11:23:59,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:23:59,066 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-09-25 11:23:59,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 11:23:59,067 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-09-25 11:23:59,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:23:59,068 INFO L225 Difference]: With dead ends: 54 [2020-09-25 11:23:59,068 INFO L226 Difference]: Without dead ends: 49 [2020-09-25 11:23:59,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2020-09-25 11:23:59,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-25 11:23:59,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2020-09-25 11:23:59,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-25 11:23:59,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2020-09-25 11:23:59,085 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 40 [2020-09-25 11:23:59,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:23:59,085 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2020-09-25 11:23:59,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 11:23:59,087 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2020-09-25 11:23:59,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 11:23:59,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:23:59,089 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:23:59,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:23:59,090 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:23:59,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:23:59,092 INFO L82 PathProgramCache]: Analyzing trace with hash 350505490, now seen corresponding path program 3 times [2020-09-25 11:23:59,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:23:59,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707399850] [2020-09-25 11:23:59,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:23:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:59,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:59,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:59,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:59,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:59,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 11:23:59,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:23:59,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 633 [2020-09-25 11:23:59,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:59,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:59,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 11:23:59,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:23:59,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 11:23:59,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:59,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:23:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:59,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:59,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:59,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:23:59,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:59,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:23:59,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:59,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:59,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:59,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:59,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:59,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:59,941 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:23:59,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707399850] [2020-09-25 11:23:59,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:23:59,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 11:23:59,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939807417] [2020-09-25 11:23:59,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 11:23:59,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:23:59,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 11:23:59,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:23:59,945 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 15 states. [2020-09-25 11:24:00,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:00,256 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2020-09-25 11:24:00,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 11:24:00,257 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2020-09-25 11:24:00,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:00,258 INFO L225 Difference]: With dead ends: 59 [2020-09-25 11:24:00,258 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 11:24:00,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=243, Invalid=459, Unknown=0, NotChecked=0, Total=702 [2020-09-25 11:24:00,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 11:24:00,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-09-25 11:24:00,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 11:24:00,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-09-25 11:24:00,266 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 45 [2020-09-25 11:24:00,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:00,266 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-09-25 11:24:00,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 11:24:00,266 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-09-25 11:24:00,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 11:24:00,267 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:00,268 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:24:00,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:24:00,268 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:00,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:00,268 INFO L82 PathProgramCache]: Analyzing trace with hash -892978821, now seen corresponding path program 4 times [2020-09-25 11:24:00,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:00,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135663377] [2020-09-25 11:24:00,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:00,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:00,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:00,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:00,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 11:24:00,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:24:00,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 505 [2020-09-25 11:24:00,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:00,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:00,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:24:00,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:24:00,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 11:24:00,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:00,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:00,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:00,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:00,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:24:00,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:00,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:24:00,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:00,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:00,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:00,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:00,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:00,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:24:00,962 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:24:00,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135663377] [2020-09-25 11:24:00,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:24:00,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 11:24:00,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063775812] [2020-09-25 11:24:00,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 11:24:00,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:00,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 11:24:00,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:24:00,966 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 17 states. [2020-09-25 11:24:01,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:01,289 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-09-25 11:24:01,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 11:24:01,290 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 50 [2020-09-25 11:24:01,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:01,291 INFO L225 Difference]: With dead ends: 61 [2020-09-25 11:24:01,291 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 11:24:01,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=318, Invalid=612, Unknown=0, NotChecked=0, Total=930 [2020-09-25 11:24:01,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 11:24:01,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-25 11:24:01,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-25 11:24:01,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2020-09-25 11:24:01,299 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 50 [2020-09-25 11:24:01,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:01,299 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2020-09-25 11:24:01,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 11:24:01,300 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2020-09-25 11:24:01,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 11:24:01,301 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:01,301 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:24:01,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:24:01,301 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:01,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:01,302 INFO L82 PathProgramCache]: Analyzing trace with hash 586056626, now seen corresponding path program 5 times [2020-09-25 11:24:01,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:01,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669392315] [2020-09-25 11:24:01,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 11:24:01,314 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 11:24:01,314 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 11:24:01,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 11:24:01,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:24:01 BoogieIcfgContainer [2020-09-25 11:24:01,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 11:24:01,345 INFO L168 Benchmark]: Toolchain (without parser) took 7288.71 ms. Allocated memory was 140.0 MB in the beginning and 272.6 MB in the end (delta: 132.6 MB). Free memory was 103.8 MB in the beginning and 113.0 MB in the end (delta: -9.2 MB). Peak memory consumption was 123.5 MB. Max. memory is 7.1 GB. [2020-09-25 11:24:01,346 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 11:24:01,346 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.72 ms. Allocated memory is still 140.0 MB. Free memory was 103.2 MB in the beginning and 93.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-25 11:24:01,347 INFO L168 Benchmark]: Boogie Preprocessor took 115.23 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 93.8 MB in the beginning and 182.9 MB in the end (delta: -89.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-25 11:24:01,348 INFO L168 Benchmark]: RCFGBuilder took 289.56 ms. Allocated memory is still 202.9 MB. Free memory was 182.9 MB in the beginning and 170.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 11:24:01,349 INFO L168 Benchmark]: TraceAbstraction took 6541.34 ms. Allocated memory was 202.9 MB in the beginning and 272.6 MB in the end (delta: 69.7 MB). Free memory was 170.1 MB in the beginning and 113.0 MB in the end (delta: 57.2 MB). Peak memory consumption was 126.9 MB. Max. memory is 7.1 GB. [2020-09-25 11:24:01,353 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 328.72 ms. Allocated memory is still 140.0 MB. Free memory was 103.2 MB in the beginning and 93.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.23 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 93.8 MB in the beginning and 182.9 MB in the end (delta: -89.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 289.56 ms. Allocated memory is still 202.9 MB. Free memory was 182.9 MB in the beginning and 170.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6541.34 ms. Allocated memory was 202.9 MB in the beginning and 272.6 MB in the end (delta: 69.7 MB). Free memory was 170.1 MB in the beginning and 113.0 MB in the end (delta: 57.2 MB). Peak memory consumption was 126.9 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, sn=0; [L13] i=1 [L13] COND TRUE i<=8 [L14] COND TRUE i<4 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=8 [L14] COND TRUE i<4 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=8 [L14] COND TRUE i<4 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ [L13] COND FALSE !(i<=8) [L17] CALL __VERIFIER_assert(sn==8*(2) || sn == 0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.4s, OverallIterations: 9, TraceHistogramMax: 8, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 122 SDtfs, 139 SDslu, 785 SDs, 0 SdLazy, 432 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 155 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 18 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 309 NumberOfCodeBlocks, 309 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 246 ConstructedInterpolants, 0 QuantifiedInterpolants, 21550 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 1 PerfectInterpolantSequences, 0/324 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...