/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=NARROWEST --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-crafted-1/sumt5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:21:05,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:21:05,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:21:05,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:21:05,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:21:05,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:21:05,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:21:05,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:21:05,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:21:05,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:21:05,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:21:05,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:21:05,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:21:05,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:21:05,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:21:05,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:21:05,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:21:05,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:21:05,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:21:05,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:21:05,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:21:05,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:21:05,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:21:05,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:21:05,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:21:05,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:21:05,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:21:05,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:21:05,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:21:05,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:21:05,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:21:05,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:21:05,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:21:05,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:21:05,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:21:05,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:21:05,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:21:05,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:21:05,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:21:05,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:21:05,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:21:05,422 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 02:21:05,466 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:21:05,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:21:05,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:21:05,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:21:05,470 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:21:05,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:21:05,470 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:21:05,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:21:05,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:21:05,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:21:05,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:21:05,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:21:05,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:21:05,473 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:21:05,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:21:05,473 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:21:05,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:21:05,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:21:05,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:21:05,474 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:21:05,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:21:05,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:21:05,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:21:05,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:21:05,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:21:05,475 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:21:05,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:21:05,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:21:05,476 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:21:05,476 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:21:05,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:21:05,963 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:21:05,968 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:21:05,970 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:21:05,970 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:21:05,972 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-09-25 02:21:06,053 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6de1bca8c/621065223e364736bdb167f009954aa4/FLAGf93d3f150 [2020-09-25 02:21:06,619 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:21:06,620 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-09-25 02:21:06,629 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6de1bca8c/621065223e364736bdb167f009954aa4/FLAGf93d3f150 [2020-09-25 02:21:06,958 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6de1bca8c/621065223e364736bdb167f009954aa4 [2020-09-25 02:21:06,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:21:06,980 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:21:06,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:21:06,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:21:06,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:21:06,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:21:06" (1/1) ... [2020-09-25 02:21:06,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12755b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:21:06, skipping insertion in model container [2020-09-25 02:21:06,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:21:06" (1/1) ... [2020-09-25 02:21:07,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:21:07,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:21:07,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:21:07,291 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:21:07,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:21:07,342 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:21:07,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:21:07 WrapperNode [2020-09-25 02:21:07,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:21:07,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:21:07,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:21:07,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:21:07,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:21:07" (1/1) ... [2020-09-25 02:21:07,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:21:07" (1/1) ... [2020-09-25 02:21:07,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:21:07" (1/1) ... [2020-09-25 02:21:07,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:21:07" (1/1) ... [2020-09-25 02:21:07,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:21:07" (1/1) ... [2020-09-25 02:21:07,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:21:07" (1/1) ... [2020-09-25 02:21:07,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:21:07" (1/1) ... [2020-09-25 02:21:07,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:21:07,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:21:07,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:21:07,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:21:07,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:21:07" (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 02:21:07,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:21:07,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:21:07,636 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 02:21:07,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 02:21:07,636 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:21:07,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:21:07,637 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 02:21:07,638 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 02:21:07,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 02:21:07,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:21:07,639 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:21:07,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:21:07,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:21:07,953 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:21:07,953 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 02:21:07,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:21:07 BoogieIcfgContainer [2020-09-25 02:21:07,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:21:07,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:21:07,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:21:07,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:21:07,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:21:06" (1/3) ... [2020-09-25 02:21:07,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114cf3c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:21:07, skipping insertion in model container [2020-09-25 02:21:07,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:21:07" (2/3) ... [2020-09-25 02:21:07,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114cf3c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:21:07, skipping insertion in model container [2020-09-25 02:21:07,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:21:07" (3/3) ... [2020-09-25 02:21:07,976 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt5.c [2020-09-25 02:21:08,006 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:21:08,035 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:21:08,069 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:21:08,114 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:21:08,115 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:21:08,115 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:21:08,115 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:21:08,115 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:21:08,115 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:21:08,116 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:21:08,116 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:21:08,138 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-09-25 02:21:08,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 02:21:08,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:21:08,147 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] [2020-09-25 02:21:08,148 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:21:08,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:21:08,155 INFO L82 PathProgramCache]: Analyzing trace with hash -687260303, now seen corresponding path program 1 times [2020-09-25 02:21:08,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:21:08,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398954377] [2020-09-25 02:21:08,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:21:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:08,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:08,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:08,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:08,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 02:21:08,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:21:08,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-09-25 02:21:08,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:08,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:21:08,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 02:21:08,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:21:08,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 02:21:08,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:21:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:08,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:08,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:08,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:21:08,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:21:08,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:21:08,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:08,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:21:08,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:21:08,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:21:08,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:21:08,874 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 02:21:08,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398954377] [2020-09-25 02:21:08,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:21:08,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 02:21:08,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333794556] [2020-09-25 02:21:08,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 02:21:08,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:21:08,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 02:21:08,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:21:08,910 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-09-25 02:21:08,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:21:08,983 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2020-09-25 02:21:08,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 02:21:08,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-25 02:21:08,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:21:08,999 INFO L225 Difference]: With dead ends: 52 [2020-09-25 02:21:09,000 INFO L226 Difference]: Without dead ends: 32 [2020-09-25 02:21:09,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:21:09,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-25 02:21:09,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-09-25 02:21:09,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-25 02:21:09,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-09-25 02:21:09,059 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 21 [2020-09-25 02:21:09,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:21:09,060 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-09-25 02:21:09,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 02:21:09,060 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-09-25 02:21:09,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 02:21:09,061 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:21:09,061 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] [2020-09-25 02:21:09,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:21:09,062 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:21:09,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:21:09,063 INFO L82 PathProgramCache]: Analyzing trace with hash -715889454, now seen corresponding path program 1 times [2020-09-25 02:21:09,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:21:09,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764257799] [2020-09-25 02:21:09,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:21:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:09,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:09,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:09,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 02:21:09,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:21:09,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-09-25 02:21:09,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:09,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:21:09,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 02:21:09,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 02:21:09,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:21:09,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:21:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:09,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:09,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:09,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:21:09,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:21:09,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:21:09,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:09,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:21:09,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:21:09,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:21:09,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:21:09,732 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 02:21:09,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764257799] [2020-09-25 02:21:09,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:21:09,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 02:21:09,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225643715] [2020-09-25 02:21:09,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 02:21:09,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:21:09,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 02:21:09,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:21:09,737 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 11 states. [2020-09-25 02:21:10,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:21:10,309 INFO L93 Difference]: Finished difference Result 91 states and 116 transitions. [2020-09-25 02:21:10,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:21:10,310 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-25 02:21:10,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:21:10,313 INFO L225 Difference]: With dead ends: 91 [2020-09-25 02:21:10,314 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 02:21:10,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-25 02:21:10,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 02:21:10,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 34. [2020-09-25 02:21:10,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 02:21:10,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-25 02:21:10,327 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 21 [2020-09-25 02:21:10,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:21:10,327 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-25 02:21:10,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 02:21:10,327 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-25 02:21:10,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 02:21:10,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:21:10,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:21:10,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:21:10,329 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:21:10,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:21:10,330 INFO L82 PathProgramCache]: Analyzing trace with hash -805340680, now seen corresponding path program 1 times [2020-09-25 02:21:10,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:21:10,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016681186] [2020-09-25 02:21:10,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:21:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:10,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:10,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:10,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:21:10,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:21:10,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-09-25 02:21:10,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:10,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:21:10,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 02:21:10,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:21:10,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:21:11,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:21:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:11,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:11,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:11,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:21:11,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:21:11,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:21:11,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:11,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:21:11,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:21:11,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:21:11,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:21:11,257 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 02:21:11,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016681186] [2020-09-25 02:21:11,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:21:11,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 02:21:11,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081853003] [2020-09-25 02:21:11,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 02:21:11,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:21:11,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 02:21:11,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-25 02:21:11,260 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 13 states. [2020-09-25 02:21:14,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:21:14,047 INFO L93 Difference]: Finished difference Result 87 states and 110 transitions. [2020-09-25 02:21:14,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 02:21:14,047 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-09-25 02:21:14,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:21:14,049 INFO L225 Difference]: With dead ends: 87 [2020-09-25 02:21:14,049 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 02:21:14,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2020-09-25 02:21:14,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 02:21:14,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 37. [2020-09-25 02:21:14,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-25 02:21:14,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-09-25 02:21:14,058 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 25 [2020-09-25 02:21:14,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:21:14,059 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-09-25 02:21:14,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 02:21:14,059 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-09-25 02:21:14,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 02:21:14,060 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:21:14,060 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:21:14,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:21:14,061 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:21:14,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:21:14,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1490056162, now seen corresponding path program 2 times [2020-09-25 02:21:14,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:21:14,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884993185] [2020-09-25 02:21:14,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:21:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:14,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:14,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:14,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:14,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:14,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 02:21:14,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:21:14,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 672 [2020-09-25 02:21:14,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:14,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:21:14,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 02:21:14,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:21:14,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:21:15,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:21:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:15,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:15,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:15,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:21:15,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:21:15,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:21:15,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:15,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:21:15,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:21:15,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:21:15,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:21:15,035 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:21:15,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884993185] [2020-09-25 02:21:15,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:21:15,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 02:21:15,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622900510] [2020-09-25 02:21:15,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:21:15,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:21:15,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:21:15,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:21:15,038 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-09-25 02:21:15,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:21:15,292 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2020-09-25 02:21:15,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:21:15,293 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-25 02:21:15,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:21:15,294 INFO L225 Difference]: With dead ends: 57 [2020-09-25 02:21:15,295 INFO L226 Difference]: Without dead ends: 41 [2020-09-25 02:21:15,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:21:15,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-25 02:21:15,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-09-25 02:21:15,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 02:21:15,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-09-25 02:21:15,303 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 29 [2020-09-25 02:21:15,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:21:15,304 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-09-25 02:21:15,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:21:15,304 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-09-25 02:21:15,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 02:21:15,305 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:21:15,305 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:21:15,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:21:15,306 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:21:15,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:21:15,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1369450661, now seen corresponding path program 1 times [2020-09-25 02:21:15,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:21:15,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285650935] [2020-09-25 02:21:15,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:21:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:15,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:15,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:15,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:15,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 02:21:15,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:21:15,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-09-25 02:21:15,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:15,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:21:15,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 02:21:15,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:21:15,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:21:16,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:21:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:16,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:16,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:16,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:21:16,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:21:16,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:21:16,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:16,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:21:16,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:21:16,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:21:16,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:21:16,016 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:21:16,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285650935] [2020-09-25 02:21:16,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:21:16,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 02:21:16,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724372500] [2020-09-25 02:21:16,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:21:16,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:21:16,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:21:16,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:21:16,018 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 5 states. [2020-09-25 02:21:16,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:21:16,166 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2020-09-25 02:21:16,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:21:16,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-25 02:21:16,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:21:16,168 INFO L225 Difference]: With dead ends: 67 [2020-09-25 02:21:16,168 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 02:21:16,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:21:16,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 02:21:16,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-09-25 02:21:16,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 02:21:16,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-09-25 02:21:16,177 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 30 [2020-09-25 02:21:16,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:21:16,177 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-09-25 02:21:16,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:21:16,178 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-09-25 02:21:16,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 02:21:16,179 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:21:16,179 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:21:16,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:21:16,180 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:21:16,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:21:16,180 INFO L82 PathProgramCache]: Analyzing trace with hash -895592636, now seen corresponding path program 1 times [2020-09-25 02:21:16,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:21:16,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081467976] [2020-09-25 02:21:16,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:21:16,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:16,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:16,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:16,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:16,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 02:21:16,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:21:16,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 734 [2020-09-25 02:21:16,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:16,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:21:16,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 02:21:16,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 02:21:16,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:21:17,114 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 21 [2020-09-25 02:21:17,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:21:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:17,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:17,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:17,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:21:17,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:21:17,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:21:17,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:17,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:21:17,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:21:17,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:21:17,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:21:17,134 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:21:17,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081467976] [2020-09-25 02:21:17,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:21:17,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 02:21:17,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298760249] [2020-09-25 02:21:17,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:21:17,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:21:17,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:21:17,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:21:17,136 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 5 states. [2020-09-25 02:21:17,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:21:17,322 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2020-09-25 02:21:17,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:21:17,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-25 02:21:17,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:21:17,324 INFO L225 Difference]: With dead ends: 66 [2020-09-25 02:21:17,324 INFO L226 Difference]: Without dead ends: 47 [2020-09-25 02:21:17,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:21:17,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-25 02:21:17,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2020-09-25 02:21:17,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 02:21:17,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-09-25 02:21:17,332 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 31 [2020-09-25 02:21:17,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:21:17,332 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-09-25 02:21:17,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:21:17,333 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-09-25 02:21:17,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 02:21:17,334 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:21:17,334 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:21:17,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:21:17,334 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:21:17,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:21:17,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1939159041, now seen corresponding path program 1 times [2020-09-25 02:21:17,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:21:17,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298062224] [2020-09-25 02:21:17,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:21:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:17,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:17,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:18,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:18,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 02:21:18,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:21:18,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 974 [2020-09-25 02:21:18,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:18,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:21:18,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 02:21:18,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 02:21:18,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:21:20,430 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse9 (div c_main_~l~0 2))) (let ((.cse1 (* 2 .cse9))) (let ((.cse6 (= c_main_~l~0 .cse1)) (.cse7 (* 4294967296 (div c_main_~l~0 4294967296))) (.cse8 (* .cse9 (- 2)))) (let ((.cse5 (* 4294967296 (div (+ .cse8 c_main_~l~0 (- 2)) 4294967296))) (.cse3 (< c_main_~l~0 .cse7)) (.cse4 (not .cse6)) (.cse2 (* 4294967296 (div (+ .cse8 c_main_~l~0) 4294967296))) (.cse0 (or .cse6 (<= .cse7 c_main_~l~0)))) (or (and .cse0 (<= (+ .cse1 .cse2 1) c_main_~l~0)) (and .cse3 .cse4 (<= c_main_~l~0 (+ .cse1 .cse5 3))) (and (<= (+ .cse1 .cse5 5) c_main_~l~0) .cse3 .cse4) (and (<= (+ c_main_~l~0 1) (+ .cse1 .cse2)) .cse0)))))) is different from false [2020-09-25 02:21:20,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:21:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:20,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:20,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:20,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:21:20,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:21:20,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:21:20,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:20,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:21:20,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:21:20,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:21:20,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:21:20,452 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2020-09-25 02:21:20,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298062224] [2020-09-25 02:21:20,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:21:20,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 02:21:20,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511602954] [2020-09-25 02:21:20,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:21:20,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:21:20,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:21:20,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2020-09-25 02:21:20,457 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 5 states. [2020-09-25 02:21:20,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:21:20,605 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-09-25 02:21:20,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:21:20,605 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-09-25 02:21:20,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:21:20,606 INFO L225 Difference]: With dead ends: 63 [2020-09-25 02:21:20,606 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 02:21:20,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=14, Invalid=19, Unknown=1, NotChecked=8, Total=42 [2020-09-25 02:21:20,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 02:21:20,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-09-25 02:21:20,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-25 02:21:20,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-09-25 02:21:20,614 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 32 [2020-09-25 02:21:20,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:21:20,615 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-09-25 02:21:20,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:21:20,615 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-09-25 02:21:20,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 02:21:20,616 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:21:20,616 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:21:20,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:21:20,616 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:21:20,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:21:20,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1240166497, now seen corresponding path program 1 times [2020-09-25 02:21:20,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:21:20,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480558394] [2020-09-25 02:21:20,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:21:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:20,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:21,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:21,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 02:21:21,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:21:21,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 638 [2020-09-25 02:21:21,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:21,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:21:21,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 02:21:21,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 02:21:21,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:21:21,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:21:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:21,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:21,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:21,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:21:21,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:21:21,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:21:21,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:21,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:21:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:21:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:21:21,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:21:21,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 02:21:21,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480558394] [2020-09-25 02:21:21,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:21:21,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 02:21:21,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136264626] [2020-09-25 02:21:21,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 02:21:21,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:21:21,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 02:21:21,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-09-25 02:21:21,564 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 13 states. [2020-09-25 02:21:22,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:21:22,333 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2020-09-25 02:21:22,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 02:21:22,333 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-09-25 02:21:22,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:21:22,334 INFO L225 Difference]: With dead ends: 60 [2020-09-25 02:21:22,334 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 02:21:22,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2020-09-25 02:21:22,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 02:21:22,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 02:21:22,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 02:21:22,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 02:21:22,336 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-09-25 02:21:22,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:21:22,337 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 02:21:22,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 02:21:22,337 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 02:21:22,337 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 02:21:22,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:21:22,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 02:21:22,623 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-09-25 02:21:22,627 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 02:21:22,628 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-09-25 02:21:22,628 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 02:21:22,628 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 02:21:22,628 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 02:21:22,629 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 02:21:22,629 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 02:21:22,629 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 02:21:22,629 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 02:21:22,629 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 02:21:22,629 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 02:21:22,629 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 02:21:22,630 INFO L268 CegarLoopResult]: For program point L27(lines 27 30) no Hoare annotation was computed. [2020-09-25 02:21:22,630 INFO L268 CegarLoopResult]: For program point L27-2(lines 21 30) no Hoare annotation was computed. [2020-09-25 02:21:22,630 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 35) no Hoare annotation was computed. [2020-09-25 02:21:22,630 INFO L268 CegarLoopResult]: For program point L23(lines 23 30) no Hoare annotation was computed. [2020-09-25 02:21:22,630 INFO L264 CegarLoopResult]: At program point L19-2(lines 19 32) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) [2020-09-25 02:21:22,631 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 32) the Hoare annotation is: (let ((.cse12 (+ main_~i~0 main_~k~0)) (.cse10 (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0))) (let ((.cse2 (<= .cse10 main_~l~0)) (.cse0 (<= 0 .cse12)) (.cse9 (div .cse10 4294967296)) (.cse8 (div main_~l~0 4294967296)) (.cse3 (<= main_~i~0 0)) (.cse6 (<= 0 main_~i~0)) (.cse1 (+ main_~i~0 main_~j~0 main_~k~0)) (.cse7 (<= .cse12 0))) (or (let ((.cse5 (+ main_~l~0 (* 4294967296 .cse9))) (.cse4 (* 4294967296 .cse8))) (and .cse0 (<= 0 .cse1) .cse2 .cse3 (<= .cse1 0) (<= (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0 .cse4) .cse5) .cse6 (< .cse5 (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0 .cse4 1)) .cse7)) (and (<= main_~l~0 .cse10) .cse2) (let ((.cse11 (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0))) (and .cse0 (= (+ main_~l~0 (* .cse9 4294967296)) (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0 (* .cse8 4294967296))) .cse3 (<= main_~l~0 .cse1) (<= main_~l~0 .cse11) .cse6 (<= .cse11 main_~l~0) (<= main_~l~0 0) (<= .cse1 main_~l~0) .cse7 (<= 0 main_~l~0)))))) [2020-09-25 02:21:22,631 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 02:21:22,631 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 02:21:22,631 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 02:21:22,631 INFO L268 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-09-25 02:21:22,631 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 02:21:22,632 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 02:21:22,632 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 02:21:22,632 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 02:21:22,632 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 02:21:22,632 INFO L268 CegarLoopResult]: For program point L25(lines 25 30) no Hoare annotation was computed. [2020-09-25 02:21:22,632 INFO L268 CegarLoopResult]: For program point L21(lines 21 30) no Hoare annotation was computed. [2020-09-25 02:21:22,632 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 02:21:22,633 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 02:21:22,633 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-25 02:21:22,633 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 35) no Hoare annotation was computed. [2020-09-25 02:21:22,633 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-25 02:21:22,633 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 35) the Hoare annotation is: true [2020-09-25 02:21:22,633 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-25 02:21:22,633 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 02:21:22,633 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 02:21:22,634 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 02:21:22,634 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 02:21:22,634 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 02:21:22,634 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 02:21:22,634 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 02:21:22,634 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 02:21:22,635 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 02:21:22,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:21:22 BoogieIcfgContainer [2020-09-25 02:21:22,674 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:21:22,676 INFO L168 Benchmark]: Toolchain (without parser) took 15699.33 ms. Allocated memory was 144.7 MB in the beginning and 303.6 MB in the end (delta: 158.9 MB). Free memory was 100.7 MB in the beginning and 212.6 MB in the end (delta: -111.9 MB). Peak memory consumption was 47.0 MB. Max. memory is 7.1 GB. [2020-09-25 02:21:22,678 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 144.7 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 02:21:22,678 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.32 ms. Allocated memory is still 144.7 MB. Free memory was 100.0 MB in the beginning and 90.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-25 02:21:22,679 INFO L168 Benchmark]: Boogie Preprocessor took 209.32 ms. Allocated memory was 144.7 MB in the beginning and 205.5 MB in the end (delta: 60.8 MB). Free memory was 90.2 MB in the beginning and 183.4 MB in the end (delta: -93.2 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-25 02:21:22,680 INFO L168 Benchmark]: RCFGBuilder took 405.29 ms. Allocated memory is still 205.5 MB. Free memory was 183.4 MB in the beginning and 168.6 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2020-09-25 02:21:22,681 INFO L168 Benchmark]: TraceAbstraction took 14713.49 ms. Allocated memory was 205.5 MB in the beginning and 303.6 MB in the end (delta: 98.0 MB). Free memory was 168.0 MB in the beginning and 212.6 MB in the end (delta: -44.7 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. [2020-09-25 02:21:22,685 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 144.7 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 362.32 ms. Allocated memory is still 144.7 MB. Free memory was 100.0 MB in the beginning and 90.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 209.32 ms. Allocated memory was 144.7 MB in the beginning and 205.5 MB in the end (delta: 60.8 MB). Free memory was 90.2 MB in the beginning and 183.4 MB in the end (delta: -93.2 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 405.29 ms. Allocated memory is still 205.5 MB. Free memory was 183.4 MB in the beginning and 168.6 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14713.49 ms. Allocated memory was 205.5 MB in the beginning and 303.6 MB in the end (delta: 98.0 MB). Free memory was 168.0 MB in the beginning and 212.6 MB in the end (delta: -44.7 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: l <= i + j + k + v3 + v4 && i + j + k + v3 + v4 <= l - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.2s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 209 SDtfs, 797 SDslu, 212 SDs, 0 SdLazy, 951 SolverSat, 115 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=7, 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, 94 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 16 PreInvPairs, 26 NumberOfFragments, 201 HoareAnnotationTreeSize, 16 FomulaSimplifications, 3491 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 38 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 221 NumberOfCodeBlocks, 221 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 213 ConstructedInterpolants, 0 QuantifiedInterpolants, 72980 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 18/27 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 correct! Received shutdown request...