/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested6.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:43:09,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:43:09,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:43:09,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:43:09,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:43:09,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:43:09,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:43:09,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:43:09,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:43:09,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:43:09,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:43:09,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:43:09,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:43:09,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:43:09,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:43:09,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:43:09,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:43:09,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:43:09,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:43:09,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:43:09,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:43:09,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:43:09,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:43:09,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:43:09,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:43:09,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:43:09,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:43:09,527 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:43:09,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:43:09,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:43:09,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:43:09,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:43:09,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:43:09,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:43:09,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:43:09,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:43:09,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:43:09,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:43:09,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:43:09,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:43:09,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:43:09,536 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 20:43:09,560 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:43:09,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:43:09,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:43:09,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:43:09,562 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:43:09,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:43:09,562 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:43:09,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:43:09,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:43:09,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:43:09,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:43:09,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:43:09,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:43:09,564 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:43:09,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:43:09,564 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:43:09,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:43:09,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:43:09,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:43:09,565 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:43:09,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:43:09,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:43:09,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:43:09,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:43:09,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:43:09,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:43:09,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:43:09,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:43:09,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:43:09,567 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:43:10,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:43:10,046 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:43:10,051 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:43:10,052 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:43:10,053 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:43:10,054 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested6.i [2020-09-24 20:43:10,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/766c3e4a4/42ef9d15d757455391043b69a67cd75c/FLAG0ff2e8c79 [2020-09-24 20:43:10,602 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:43:10,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/nested6.i [2020-09-24 20:43:10,609 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/766c3e4a4/42ef9d15d757455391043b69a67cd75c/FLAG0ff2e8c79 [2020-09-24 20:43:10,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/766c3e4a4/42ef9d15d757455391043b69a67cd75c [2020-09-24 20:43:10,966 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:43:10,972 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:43:10,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:43:10,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:43:10,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:43:10,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:43:10" (1/1) ... [2020-09-24 20:43:10,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40201f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:10, skipping insertion in model container [2020-09-24 20:43:10,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:43:10" (1/1) ... [2020-09-24 20:43:10,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:43:11,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:43:11,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:43:11,292 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:43:11,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:43:11,326 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:43:11,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:11 WrapperNode [2020-09-24 20:43:11,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:43:11,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:43:11,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:43:11,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:43:11,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:11" (1/1) ... [2020-09-24 20:43:11,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:11" (1/1) ... [2020-09-24 20:43:11,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:11" (1/1) ... [2020-09-24 20:43:11,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:11" (1/1) ... [2020-09-24 20:43:11,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:11" (1/1) ... [2020-09-24 20:43:11,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:11" (1/1) ... [2020-09-24 20:43:11,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:11" (1/1) ... [2020-09-24 20:43:11,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:43:11,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:43:11,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:43:11,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:43:11,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:43:11,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:43:11,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:43:11,535 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 20:43:11,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 20:43:11,536 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:43:11,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:43:11,536 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 20:43:11,536 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 20:43:11,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 20:43:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:43:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:43:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:43:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:43:11,845 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:43:11,846 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-24 20:43:11,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:43:11 BoogieIcfgContainer [2020-09-24 20:43:11,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:43:11,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:43:11,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:43:11,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:43:11,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:43:10" (1/3) ... [2020-09-24 20:43:11,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286c9910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:43:11, skipping insertion in model container [2020-09-24 20:43:11,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:11" (2/3) ... [2020-09-24 20:43:11,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286c9910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:43:11, skipping insertion in model container [2020-09-24 20:43:11,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:43:11" (3/3) ... [2020-09-24 20:43:11,859 INFO L109 eAbstractionObserver]: Analyzing ICFG nested6.i [2020-09-24 20:43:11,868 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:43:11,877 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:43:11,898 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:43:11,930 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:43:11,930 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:43:11,930 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:43:11,930 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:43:11,931 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:43:11,931 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:43:11,931 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:43:11,931 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:43:11,952 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-09-24 20:43:11,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 20:43:11,960 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:11,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:43:11,962 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:11,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:11,968 INFO L82 PathProgramCache]: Analyzing trace with hash 2127483765, now seen corresponding path program 1 times [2020-09-24 20:43:11,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:11,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826476102] [2020-09-24 20:43:11,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:12,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:12,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:12,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 20:43:12,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:12,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-24 20:43:12,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:12,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:43:12,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 20:43:12,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 20:43:12,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:43:12,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:12,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:12,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:12,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:43:12,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:12,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:43:12,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:12,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:12,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:12,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:12,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:12,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:43:12,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826476102] [2020-09-24 20:43:12,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:43:12,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:43:12,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12481884] [2020-09-24 20:43:12,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:43:12,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:12,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:43:12,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:43:12,465 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 5 states. [2020-09-24 20:43:12,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:12,601 INFO L93 Difference]: Finished difference Result 89 states and 112 transitions. [2020-09-24 20:43:12,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:43:12,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-24 20:43:12,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:12,616 INFO L225 Difference]: With dead ends: 89 [2020-09-24 20:43:12,617 INFO L226 Difference]: Without dead ends: 48 [2020-09-24 20:43:12,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:43:12,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-24 20:43:12,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-24 20:43:12,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 20:43:12,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-09-24 20:43:12,681 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 27 [2020-09-24 20:43:12,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:12,682 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-09-24 20:43:12,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:43:12,682 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-09-24 20:43:12,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 20:43:12,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:12,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:43:12,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:43:12,685 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:12,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:12,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1763359327, now seen corresponding path program 1 times [2020-09-24 20:43:12,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:12,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974767110] [2020-09-24 20:43:12,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:12,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:12,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:12,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 20:43:12,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:12,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-24 20:43:12,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:12,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:43:12,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 20:43:12,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 20:43:12,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:12,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:12,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:12,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:12,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:43:12,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:12,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:43:12,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:12,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:12,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:12,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:12,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:12,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:43:12,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974767110] [2020-09-24 20:43:12,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:43:12,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 20:43:12,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359266918] [2020-09-24 20:43:12,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:43:12,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:12,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:43:12,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:43:12,981 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 6 states. [2020-09-24 20:43:13,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:13,146 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2020-09-24 20:43:13,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:43:13,147 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-24 20:43:13,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:13,149 INFO L225 Difference]: With dead ends: 90 [2020-09-24 20:43:13,149 INFO L226 Difference]: Without dead ends: 88 [2020-09-24 20:43:13,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:43:13,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-24 20:43:13,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 59. [2020-09-24 20:43:13,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-24 20:43:13,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-09-24 20:43:13,168 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 29 [2020-09-24 20:43:13,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:13,169 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-09-24 20:43:13,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:43:13,169 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-09-24 20:43:13,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-24 20:43:13,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:13,171 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-09-24 20:43:13,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:43:13,171 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:13,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:13,172 INFO L82 PathProgramCache]: Analyzing trace with hash 2139784298, now seen corresponding path program 1 times [2020-09-24 20:43:13,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:13,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358804653] [2020-09-24 20:43:13,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:13,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:13,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:13,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 20:43:13,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:13,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 20:43:13,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:13,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:43:13,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 20:43:13,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 20:43:13,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:13,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:13,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:13,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:13,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:43:13,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:13,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:43:13,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:13,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:13,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:13,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:13,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:13,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 20:43:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:13,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:13,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:13,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:43:13,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:13,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 20:43:13,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:13,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:43:13,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:13,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:43:13,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:13,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:43:13,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358804653] [2020-09-24 20:43:13,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:43:13,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:43:13,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259609219] [2020-09-24 20:43:13,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:43:13,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:13,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:43:13,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:43:13,373 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 5 states. [2020-09-24 20:43:13,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:13,465 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2020-09-24 20:43:13,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:43:13,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-09-24 20:43:13,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:13,470 INFO L225 Difference]: With dead ends: 90 [2020-09-24 20:43:13,470 INFO L226 Difference]: Without dead ends: 88 [2020-09-24 20:43:13,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:43:13,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-24 20:43:13,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-09-24 20:43:13,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-24 20:43:13,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2020-09-24 20:43:13,485 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 32 [2020-09-24 20:43:13,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:13,485 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2020-09-24 20:43:13,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:43:13,486 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2020-09-24 20:43:13,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 20:43:13,487 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:13,487 INFO L422 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1] [2020-09-24 20:43:13,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:43:13,488 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:13,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:13,488 INFO L82 PathProgramCache]: Analyzing trace with hash -268568898, now seen corresponding path program 1 times [2020-09-24 20:43:13,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:13,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551535127] [2020-09-24 20:43:13,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:13,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:13,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:14,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:14,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 20:43:14,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:43:14,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-09-24 20:43:14,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:14,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:43:14,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 20:43:14,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:43:14,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:43:14,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:14,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:14,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:14,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:43:14,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:14,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:43:14,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:14,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:14,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:14,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:14,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:14,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 20:43:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:14,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:14,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:14,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:43:14,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:14,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:43:14,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:14,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:43:14,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:14,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:43:14,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:14,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:43:14,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551535127] [2020-09-24 20:43:14,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:43:14,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 20:43:14,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349989083] [2020-09-24 20:43:14,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:43:14,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:14,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:43:14,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:43:14,126 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand 9 states. [2020-09-24 20:43:14,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:14,348 INFO L93 Difference]: Finished difference Result 107 states and 123 transitions. [2020-09-24 20:43:14,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:43:14,349 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-09-24 20:43:14,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:14,351 INFO L225 Difference]: With dead ends: 107 [2020-09-24 20:43:14,351 INFO L226 Difference]: Without dead ends: 105 [2020-09-24 20:43:14,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:43:14,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-24 20:43:14,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 84. [2020-09-24 20:43:14,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-24 20:43:14,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2020-09-24 20:43:14,365 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 38 [2020-09-24 20:43:14,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:14,366 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2020-09-24 20:43:14,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:43:14,366 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2020-09-24 20:43:14,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 20:43:14,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:14,368 INFO L422 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:43:14,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:43:14,369 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:14,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:14,369 INFO L82 PathProgramCache]: Analyzing trace with hash -360550748, now seen corresponding path program 1 times [2020-09-24 20:43:14,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:14,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978594405] [2020-09-24 20:43:14,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:14,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:14,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:14,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:14,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:14,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:15,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:15,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:15,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:43:15,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:43:15,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 984 [2020-09-24 20:43:15,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:15,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:43:15,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 20:43:15,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 20:43:15,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:15,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:15,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:15,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:15,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:43:15,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:15,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:43:15,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:15,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:15,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:15,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:15,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:43:15,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978594405] [2020-09-24 20:43:15,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:43:15,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 20:43:15,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974817167] [2020-09-24 20:43:15,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:43:15,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:15,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:43:15,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:43:15,471 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand 11 states. [2020-09-24 20:43:15,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:15,993 INFO L93 Difference]: Finished difference Result 171 states and 209 transitions. [2020-09-24 20:43:15,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 20:43:15,994 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-09-24 20:43:15,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:15,997 INFO L225 Difference]: With dead ends: 171 [2020-09-24 20:43:15,997 INFO L226 Difference]: Without dead ends: 169 [2020-09-24 20:43:15,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2020-09-24 20:43:15,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-09-24 20:43:16,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 141. [2020-09-24 20:43:16,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-09-24 20:43:16,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 174 transitions. [2020-09-24 20:43:16,018 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 174 transitions. Word has length 38 [2020-09-24 20:43:16,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:16,018 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 174 transitions. [2020-09-24 20:43:16,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:43:16,019 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 174 transitions. [2020-09-24 20:43:16,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-24 20:43:16,021 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:16,021 INFO L422 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:43:16,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:43:16,022 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:16,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:16,023 INFO L82 PathProgramCache]: Analyzing trace with hash -2102022651, now seen corresponding path program 1 times [2020-09-24 20:43:16,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:16,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73348897] [2020-09-24 20:43:16,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:16,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:16,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:16,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:16,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:16,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:16,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:16,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:16,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:16,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:17,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:17,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 20:43:17,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 20:43:17,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1844 [2020-09-24 20:43:17,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:17,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:43:17,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 20:43:17,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 20:43:17,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:17,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:17,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:17,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:17,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:43:17,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:17,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:43:17,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:17,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:17,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:17,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:17,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:17,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-24 20:43:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:17,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:17,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:17,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:43:17,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:17,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:43:17,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:17,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:43:17,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:43:17,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:43:17,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:17,983 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:43:17,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73348897] [2020-09-24 20:43:17,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:43:17,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 20:43:17,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618580159] [2020-09-24 20:43:17,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:43:17,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:17,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:43:17,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:43:17,985 INFO L87 Difference]: Start difference. First operand 141 states and 174 transitions. Second operand 8 states. [2020-09-24 20:43:18,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:18,171 INFO L93 Difference]: Finished difference Result 213 states and 258 transitions. [2020-09-24 20:43:18,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:43:18,172 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-09-24 20:43:18,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:18,173 INFO L225 Difference]: With dead ends: 213 [2020-09-24 20:43:18,173 INFO L226 Difference]: Without dead ends: 124 [2020-09-24 20:43:18,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:43:18,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-24 20:43:18,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 88. [2020-09-24 20:43:18,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-24 20:43:18,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2020-09-24 20:43:18,190 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 41 [2020-09-24 20:43:18,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:18,191 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2020-09-24 20:43:18,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:43:18,191 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2020-09-24 20:43:18,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 20:43:18,203 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:18,203 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:43:18,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:43:18,204 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:18,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:18,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1447898534, now seen corresponding path program 1 times [2020-09-24 20:43:18,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:18,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951681422] [2020-09-24 20:43:18,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:18,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:18,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:18,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 20:43:18,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:18,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-24 20:43:18,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:43:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 20:43:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 20:43:18,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:18,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:18,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:18,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:18,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:18,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:43:18,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:18,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:43:18,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:18,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:18,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:18,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:18,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 20:43:18,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 20:43:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:18,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:18,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:18,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:43:18,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:18,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:43:18,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:18,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:43:18,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:18,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:43:18,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:18,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:43:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:18,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:18,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:18,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:43:18,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:18,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:43:18,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:18,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:43:18,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:18,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:43:18,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:18,488 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 20:43:18,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951681422] [2020-09-24 20:43:18,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:43:18,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 20:43:18,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121638623] [2020-09-24 20:43:18,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:43:18,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:18,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:43:18,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:43:18,490 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand 8 states. [2020-09-24 20:43:18,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:18,676 INFO L93 Difference]: Finished difference Result 146 states and 172 transitions. [2020-09-24 20:43:18,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:43:18,676 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-09-24 20:43:18,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:18,678 INFO L225 Difference]: With dead ends: 146 [2020-09-24 20:43:18,678 INFO L226 Difference]: Without dead ends: 144 [2020-09-24 20:43:18,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:43:18,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-24 20:43:18,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2020-09-24 20:43:18,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-24 20:43:18,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2020-09-24 20:43:18,692 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 46 [2020-09-24 20:43:18,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:18,692 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2020-09-24 20:43:18,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:43:18,693 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2020-09-24 20:43:18,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-24 20:43:18,694 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:18,694 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:43:18,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:43:18,694 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:18,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:18,695 INFO L82 PathProgramCache]: Analyzing trace with hash 87970788, now seen corresponding path program 1 times [2020-09-24 20:43:18,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:18,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832193871] [2020-09-24 20:43:18,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:18,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:18,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:18,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:18,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:19,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:19,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:21,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:21,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 20:43:21,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:43:21,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2573 [2020-09-24 20:43:21,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:21,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:43:21,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 20:43:21,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 20:43:21,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:21,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:21,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:21,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:21,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:43:21,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:21,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:43:21,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:21,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:21,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:21,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:21,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:21,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 20:43:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:21,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:21,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:21,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:43:21,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:21,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:43:21,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:21,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:43:21,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:21,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:43:21,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:21,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-24 20:43:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:21,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:21,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:21,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:43:21,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:21,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:43:21,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:21,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:43:21,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:21,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:43:21,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:21,415 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 20:43:21,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832193871] [2020-09-24 20:43:21,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:43:21,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 20:43:21,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792043831] [2020-09-24 20:43:21,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 20:43:21,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:21,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 20:43:21,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:43:21,419 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand 10 states. [2020-09-24 20:43:21,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:21,742 INFO L93 Difference]: Finished difference Result 185 states and 225 transitions. [2020-09-24 20:43:21,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 20:43:21,743 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-09-24 20:43:21,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:21,745 INFO L225 Difference]: With dead ends: 185 [2020-09-24 20:43:21,745 INFO L226 Difference]: Without dead ends: 183 [2020-09-24 20:43:21,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-09-24 20:43:21,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-09-24 20:43:21,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 89. [2020-09-24 20:43:21,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-09-24 20:43:21,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2020-09-24 20:43:21,758 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 50 [2020-09-24 20:43:21,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:21,758 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2020-09-24 20:43:21,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 20:43:21,758 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2020-09-24 20:43:21,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 20:43:21,759 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:21,759 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:43:21,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:43:21,760 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:21,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:21,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1080348991, now seen corresponding path program 2 times [2020-09-24 20:43:21,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:21,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126664294] [2020-09-24 20:43:21,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:21,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:21,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:21,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 20:43:21,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:21,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-24 20:43:21,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:21,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:43:21,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 20:43:21,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 20:43:21,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:22,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:22,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:22,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:22,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:43:22,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:22,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:43:22,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:22,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:22,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:22,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:22,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:22,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 20:43:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:22,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:22,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:22,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:43:22,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:22,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:43:22,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:22,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:43:22,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:22,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:43:22,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:22,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:43:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:22,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:22,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:22,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:43:22,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:22,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:43:22,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:22,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:43:22,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:22,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:43:22,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:22,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 20:43:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:22,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:22,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:22,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:43:22,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:22,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:43:22,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:22,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:43:22,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:22,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:43:22,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:22,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 20:43:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:22,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:22,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:22,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:43:22,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:22,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:43:22,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:22,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:43:22,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:22,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:43:22,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:22,094 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-24 20:43:22,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126664294] [2020-09-24 20:43:22,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:43:22,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 20:43:22,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074515286] [2020-09-24 20:43:22,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 20:43:22,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:22,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 20:43:22,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:43:22,097 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand 10 states. [2020-09-24 20:43:22,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:22,381 INFO L93 Difference]: Finished difference Result 105 states and 120 transitions. [2020-09-24 20:43:22,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 20:43:22,381 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2020-09-24 20:43:22,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:22,382 INFO L225 Difference]: With dead ends: 105 [2020-09-24 20:43:22,382 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 20:43:22,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:43:22,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 20:43:22,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 20:43:22,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 20:43:22,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 20:43:22,384 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2020-09-24 20:43:22,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:22,385 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 20:43:22,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 20:43:22,385 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 20:43:22,385 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 20:43:22,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:43:22,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 20:43:23,037 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 24 [2020-09-24 20:43:23,041 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 20:43:23,041 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:43:23,042 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:43:23,042 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 20:43:23,042 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 20:43:23,042 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 20:43:23,042 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-24 20:43:23,042 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-24 20:43:23,042 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-24 20:43:23,043 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-24 20:43:23,043 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-24 20:43:23,043 INFO L268 CegarLoopResult]: For program point L31(lines 23 33) no Hoare annotation was computed. [2020-09-24 20:43:23,043 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 37) no Hoare annotation was computed. [2020-09-24 20:43:23,043 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-24 20:43:23,043 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-24 20:43:23,043 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-24 20:43:23,045 INFO L264 CegarLoopResult]: At program point L23-5(lines 23 33) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~k~0)) (.cse1 (<= main_~k~0 main_~n~0))) (or (and .cse0 .cse1 (= (* main_~i~0 2) main_~j~0)) (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 .cse1))) [2020-09-24 20:43:23,045 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 20:43:23,045 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 20:43:23,046 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 20:43:23,046 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 20:43:23,046 INFO L268 CegarLoopResult]: For program point L24-1(lines 24 32) no Hoare annotation was computed. [2020-09-24 20:43:23,047 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-24 20:43:23,047 INFO L268 CegarLoopResult]: For program point L24-3(line 24) no Hoare annotation was computed. [2020-09-24 20:43:23,047 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 20:43:23,047 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 20:43:23,047 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 20:43:23,047 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 20:43:23,048 INFO L268 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-09-24 20:43:23,048 INFO L268 CegarLoopResult]: For program point L25-4(line 25) no Hoare annotation was computed. [2020-09-24 20:43:23,048 INFO L264 CegarLoopResult]: At program point L25-5(lines 25 27) the Hoare annotation is: (let ((.cse4 (* 2 main_~i~0))) (let ((.cse3 (+ .cse4 1))) (let ((.cse0 (or (<= .cse3 main_~k~0) (and (<= .cse4 main_~j~0) (<= .cse4 main_~k~0)))) (.cse1 (<= (+ main_~j~0 1) main_~n~0)) (.cse2 (<= main_~k~0 main_~n~0))) (or (and .cse0 .cse1 .cse2 (= (* main_~i~0 2) main_~j~0)) (and .cse0 (<= .cse3 main_~j~0) .cse1 .cse2))))) [2020-09-24 20:43:23,049 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 20:43:23,049 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 20:43:23,049 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 37) no Hoare annotation was computed. [2020-09-24 20:43:23,049 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~k~0)) (.cse1 (<= (+ main_~j~0 1) main_~n~0)) (.cse2 (<= main_~k~0 main_~n~0))) (or (and .cse0 .cse1 .cse2 (= (* main_~i~0 2) main_~j~0)) (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 .cse1 .cse2))) [2020-09-24 20:43:23,049 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 37) the Hoare annotation is: true [2020-09-24 20:43:23,049 INFO L264 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~k~0)) (.cse1 (<= (+ main_~j~0 1) main_~n~0)) (.cse2 (<= main_~k~0 main_~n~0))) (or (and .cse0 .cse1 .cse2 (= (* main_~i~0 2) main_~j~0)) (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 .cse1 .cse2))) [2020-09-24 20:43:23,050 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (let ((.cse4 (* 2 main_~i~0))) (let ((.cse1 (+ .cse4 1))) (let ((.cse0 (or (<= .cse1 main_~k~0) (and (<= .cse4 main_~j~0) (<= .cse4 main_~k~0)))) (.cse2 (<= (+ main_~k~0 1) main_~n~0)) (.cse3 (<= (+ main_~j~0 1) main_~n~0))) (or (and .cse0 (<= .cse1 main_~j~0) .cse2 .cse3) (and .cse0 .cse2 .cse3 (= (* main_~i~0 2) main_~j~0)))))) [2020-09-24 20:43:23,050 INFO L268 CegarLoopResult]: For program point L26-1(lines 25 27) no Hoare annotation was computed. [2020-09-24 20:43:23,050 INFO L268 CegarLoopResult]: For program point L22-2(lines 22 34) no Hoare annotation was computed. [2020-09-24 20:43:23,050 INFO L268 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-09-24 20:43:23,050 INFO L268 CegarLoopResult]: For program point L18(lines 18 21) no Hoare annotation was computed. [2020-09-24 20:43:23,050 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-24 20:43:23,050 INFO L268 CegarLoopResult]: For program point L18-1(lines 18 21) no Hoare annotation was computed. [2020-09-24 20:43:23,050 INFO L264 CegarLoopResult]: At program point L22-5(lines 22 34) the Hoare annotation is: (and (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2020-09-24 20:43:23,051 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 20:43:23,051 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-24 20:43:23,051 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-24 20:43:23,051 INFO L271 CegarLoopResult]: At program point L35(lines 13 37) the Hoare annotation is: true [2020-09-24 20:43:23,052 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-24 20:43:23,052 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-24 20:43:23,052 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 20:43:23,052 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-24 20:43:23,052 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-24 20:43:23,052 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-24 20:43:23,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:43:23 BoogieIcfgContainer [2020-09-24 20:43:23,085 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:43:23,088 INFO L168 Benchmark]: Toolchain (without parser) took 12119.72 ms. Allocated memory was 138.9 MB in the beginning and 318.2 MB in the end (delta: 179.3 MB). Free memory was 102.3 MB in the beginning and 257.2 MB in the end (delta: -155.0 MB). Peak memory consumption was 168.9 MB. Max. memory is 7.1 GB. [2020-09-24 20:43:23,089 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-24 20:43:23,091 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.01 ms. Allocated memory is still 138.9 MB. Free memory was 101.4 MB in the beginning and 91.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-24 20:43:23,092 INFO L168 Benchmark]: Boogie Preprocessor took 118.34 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 91.9 MB in the beginning and 180.6 MB in the end (delta: -88.7 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-09-24 20:43:23,097 INFO L168 Benchmark]: RCFGBuilder took 404.31 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 164.6 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. [2020-09-24 20:43:23,098 INFO L168 Benchmark]: TraceAbstraction took 11233.42 ms. Allocated memory was 201.9 MB in the beginning and 318.2 MB in the end (delta: 116.4 MB). Free memory was 163.7 MB in the beginning and 257.2 MB in the end (delta: -93.6 MB). Peak memory consumption was 167.4 MB. Max. memory is 7.1 GB. [2020-09-24 20:43:23,110 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 354.01 ms. Allocated memory is still 138.9 MB. Free memory was 101.4 MB in the beginning and 91.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.34 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 91.9 MB in the beginning and 180.6 MB in the end (delta: -88.7 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 404.31 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 164.6 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11233.42 ms. Allocated memory was 201.9 MB in the beginning and 318.2 MB in the end (delta: 116.4 MB). Free memory was 163.7 MB in the beginning and 257.2 MB in the end (delta: -93.6 MB). Peak memory consumption was 167.4 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: 22]: Loop Invariant Derived loop invariant: n <= k && k <= n - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((n <= k && k <= n) && i * 2 == j) || ((2 * i + 1 <= j && n <= k) && k <= n) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((((2 * i + 1 <= k || (2 * i <= j && 2 * i <= k)) && j + 1 <= n) && k <= n) && i * 2 == j) || ((((2 * i + 1 <= k || (2 * i <= j && 2 * i <= k)) && 2 * i + 1 <= j) && j + 1 <= n) && k <= n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.4s, OverallIterations: 9, TraceHistogramMax: 5, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 496 SDtfs, 427 SDslu, 2169 SDs, 0 SdLazy, 1228 SolverSat, 119 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 155 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=141occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 237 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 35 PreInvPairs, 60 NumberOfFragments, 256 HoareAnnotationTreeSize, 35 FomulaSimplifications, 7118 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 12 FomulaSimplificationsInter, 1005 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 364 NumberOfCodeBlocks, 364 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 355 ConstructedInterpolants, 0 QuantifiedInterpolants, 41717 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 59/87 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...