/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/gcd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:11:55,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:11:55,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:11:55,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:11:55,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:11:55,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:11:55,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:11:55,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:11:55,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:11:55,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:11:55,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:11:55,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:11:55,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:11:55,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:11:55,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:11:55,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:11:55,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:11:55,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:11:55,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:11:55,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:11:55,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:11:55,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:11:55,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:11:55,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:11:55,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:11:55,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:11:55,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:11:55,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:11:55,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:11:55,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:11:55,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:11:55,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:11:55,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:11:55,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:11:55,493 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:11:55,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:11:55,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:11:55,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:11:55,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:11:55,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:11:55,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:11:55,498 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 18:11:55,524 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:11:55,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:11:55,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:11:55,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:11:55,527 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:11:55,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:11:55,527 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:11:55,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:11:55,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:11:55,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:11:55,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:11:55,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:11:55,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:11:55,528 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:11:55,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:11:55,529 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:11:55,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:11:55,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:11:55,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:11:55,530 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:11:55,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:11:55,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:11:55,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:11:55,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:11:55,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:11:55,531 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:11:55,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:11:55,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:11:55,531 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:11:55,532 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:11:56,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:11:56,028 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:11:56,032 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:11:56,034 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:11:56,034 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:11:56,036 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/gcd01-1.c [2020-09-24 18:11:56,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8f5a58e7/aa95170ba05d47e68f886d4f0c7bc502/FLAG40dc57181 [2020-09-24 18:11:56,674 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:11:56,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/gcd01-1.c [2020-09-24 18:11:56,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8f5a58e7/aa95170ba05d47e68f886d4f0c7bc502/FLAG40dc57181 [2020-09-24 18:11:57,019 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8f5a58e7/aa95170ba05d47e68f886d4f0c7bc502 [2020-09-24 18:11:57,033 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:11:57,039 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:11:57,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:11:57,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:11:57,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:11:57,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:11:57" (1/1) ... [2020-09-24 18:11:57,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4734e8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:57, skipping insertion in model container [2020-09-24 18:11:57,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:11:57" (1/1) ... [2020-09-24 18:11:57,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:11:57,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:11:57,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:11:57,308 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:11:57,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:11:57,360 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:11:57,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:57 WrapperNode [2020-09-24 18:11:57,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:11:57,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:11:57,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:11:57,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:11:57,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:57" (1/1) ... [2020-09-24 18:11:57,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:57" (1/1) ... [2020-09-24 18:11:57,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:57" (1/1) ... [2020-09-24 18:11:57,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:57" (1/1) ... [2020-09-24 18:11:57,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:57" (1/1) ... [2020-09-24 18:11:57,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:57" (1/1) ... [2020-09-24 18:11:57,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:57" (1/1) ... [2020-09-24 18:11:57,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:11:57,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:11:57,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:11:57,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:11:57,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:57" (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 18:11:57,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:11:57,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:11:57,580 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2020-09-24 18:11:57,580 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:11:57,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:11:57,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:11:57,583 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2020-09-24 18:11:57,584 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:11:57,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:11:57,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:11:57,865 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:11:57,865 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 18:11:57,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:11:57 BoogieIcfgContainer [2020-09-24 18:11:57,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:11:57,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:11:57,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:11:57,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:11:57,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:11:57" (1/3) ... [2020-09-24 18:11:57,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b700080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:11:57, skipping insertion in model container [2020-09-24 18:11:57,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:57" (2/3) ... [2020-09-24 18:11:57,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b700080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:11:57, skipping insertion in model container [2020-09-24 18:11:57,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:11:57" (3/3) ... [2020-09-24 18:11:57,890 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd01-1.c [2020-09-24 18:11:57,910 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:11:57,929 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:11:57,957 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:11:57,988 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:11:57,988 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:11:57,988 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:11:57,989 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:11:57,989 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:11:57,989 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:11:57,989 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:11:57,989 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:11:58,014 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-24 18:11:58,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 18:11:58,023 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:58,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:11:58,024 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:58,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:58,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1470222128, now seen corresponding path program 1 times [2020-09-24 18:11:58,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:58,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672494507] [2020-09-24 18:11:58,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:58,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:58,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:58,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:58,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:11:58,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:11:58,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-09-24 18:11:58,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:58,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:11:58,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:11:58,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 18:11:58,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:11:58,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:58,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:58,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:58,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:11:58,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:58,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:11:58,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:58,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:58,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:58,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:58,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:58,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:11:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:58,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:58,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:58,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:11:58,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:58,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:11:58,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:58,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:11:58,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:58,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:11:58,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:58,752 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 18:11:58,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672494507] [2020-09-24 18:11:58,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:11:58,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:11:58,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472973658] [2020-09-24 18:11:58,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:11:58,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:58,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:11:58,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:11:58,785 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 6 states. [2020-09-24 18:11:58,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:58,946 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-24 18:11:58,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:11:58,949 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-09-24 18:11:58,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:58,963 INFO L225 Difference]: With dead ends: 58 [2020-09-24 18:11:58,963 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 18:11:58,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:11:58,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 18:11:59,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-24 18:11:59,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 18:11:59,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-09-24 18:11:59,024 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 24 [2020-09-24 18:11:59,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:59,025 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-09-24 18:11:59,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:11:59,025 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-09-24 18:11:59,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 18:11:59,028 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:59,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:11:59,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:11:59,029 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:59,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:59,030 INFO L82 PathProgramCache]: Analyzing trace with hash 831268307, now seen corresponding path program 1 times [2020-09-24 18:11:59,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:59,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505060930] [2020-09-24 18:11:59,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:59,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:59,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:59,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:59,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:59,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:11:59,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:11:59,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-09-24 18:11:59,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:59,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:11:59,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 18:11:59,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:11:59,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 18:11:59,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:59,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:59,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:59,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:11:59,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:59,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:11:59,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:59,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:59,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:59,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:59,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:11:59,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:11:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:59,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:59,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:59,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:11:59,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:59,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 18:11:59,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:59,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:11:59,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:59,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:11:59,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:59,608 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 18:11:59,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505060930] [2020-09-24 18:11:59,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:11:59,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:11:59,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507828959] [2020-09-24 18:11:59,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:11:59,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:59,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:11:59,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:11:59,619 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 6 states. [2020-09-24 18:11:59,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:59,696 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2020-09-24 18:11:59,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:11:59,697 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-09-24 18:11:59,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:59,699 INFO L225 Difference]: With dead ends: 46 [2020-09-24 18:11:59,699 INFO L226 Difference]: Without dead ends: 40 [2020-09-24 18:11:59,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 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 18:11:59,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-24 18:11:59,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-09-24 18:11:59,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 18:11:59,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-09-24 18:11:59,710 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 25 [2020-09-24 18:11:59,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:59,711 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-09-24 18:11:59,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:11:59,711 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-09-24 18:11:59,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 18:11:59,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:59,713 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] [2020-09-24 18:11:59,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:11:59,714 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:59,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:59,714 INFO L82 PathProgramCache]: Analyzing trace with hash -852904039, now seen corresponding path program 1 times [2020-09-24 18:11:59,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:59,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783936468] [2020-09-24 18:11:59,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:59,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:59,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:59,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:00,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:00,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 18:12:00,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:12:00,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-09-24 18:12:00,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:00,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:12:00,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 18:12:00,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:12:00,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:00,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:12:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:00,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:00,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:00,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:12:00,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:00,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:12:00,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:00,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:00,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:00,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:00,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:00,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:12:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:00,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:00,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:00,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:12:00,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:00,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-24 18:12:00,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:00,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:12:00,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 18:12:00,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:12:00,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:00,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:12:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:00,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:00,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:00,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:12:00,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:00,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:12:00,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:00,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:12:00,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:12:00,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:12:00,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:00,449 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:12:00,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783936468] [2020-09-24 18:12:00,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:12:00,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 18:12:00,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058525019] [2020-09-24 18:12:00,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:12:00,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:12:00,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:12:00,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:12:00,455 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 8 states. [2020-09-24 18:12:00,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:12:00,654 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2020-09-24 18:12:00,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:12:00,655 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-09-24 18:12:00,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:12:00,657 INFO L225 Difference]: With dead ends: 56 [2020-09-24 18:12:00,658 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 18:12:00,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:12:00,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 18:12:00,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-24 18:12:00,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 18:12:00,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-09-24 18:12:00,670 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 35 [2020-09-24 18:12:00,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:12:00,670 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-09-24 18:12:00,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:12:00,671 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-09-24 18:12:00,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 18:12:00,672 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:12:00,673 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] [2020-09-24 18:12:00,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:12:00,673 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:12:00,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:12:00,674 INFO L82 PathProgramCache]: Analyzing trace with hash 2030561919, now seen corresponding path program 1 times [2020-09-24 18:12:00,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:12:00,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938790571] [2020-09-24 18:12:00,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:12:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:00,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:00,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:00,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:01,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:01,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 18:12:01,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:12:01,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-09-24 18:12:01,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:01,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:12:01,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 18:12:01,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:12:01,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:01,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:12:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:01,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:01,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:01,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:12:01,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:01,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:12:01,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:01,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:01,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:01,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:01,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:01,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:12:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:01,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:01,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:01,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:12:01,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:01,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 18:12:01,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:01,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:12:01,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 18:12:01,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:12:01,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:01,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:12:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:01,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:01,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:01,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:12:01,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:01,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:12:01,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:01,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:12:01,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:12:01,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:12:01,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:01,234 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:12:01,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938790571] [2020-09-24 18:12:01,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:12:01,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:12:01,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812845328] [2020-09-24 18:12:01,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:12:01,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:12:01,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:12:01,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:12:01,237 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 7 states. [2020-09-24 18:12:01,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:12:01,354 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-09-24 18:12:01,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:12:01,354 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-24 18:12:01,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:12:01,356 INFO L225 Difference]: With dead ends: 56 [2020-09-24 18:12:01,356 INFO L226 Difference]: Without dead ends: 39 [2020-09-24 18:12:01,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:12:01,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-24 18:12:01,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-09-24 18:12:01,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-24 18:12:01,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-09-24 18:12:01,365 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 35 [2020-09-24 18:12:01,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:12:01,365 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-09-24 18:12:01,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:12:01,366 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-09-24 18:12:01,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 18:12:01,367 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:12:01,367 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:12:01,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:12:01,368 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:12:01,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:12:01,368 INFO L82 PathProgramCache]: Analyzing trace with hash -2122258312, now seen corresponding path program 1 times [2020-09-24 18:12:01,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:12:01,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455144844] [2020-09-24 18:12:01,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:12:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:01,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:01,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:01,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:01,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:01,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:02,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:02,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:12:02,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:12:02,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 748 [2020-09-24 18:12:02,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:02,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:12:02,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 18:12:02,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:12:02,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:02,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:12:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:02,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:02,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:02,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:12:02,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:02,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:12:02,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:02,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:02,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:02,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:02,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:02,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:12:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:02,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:02,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:02,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:02,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:02,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 18:12:02,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:12:02,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-09-24 18:12:02,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:02,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:12:02,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:02,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 18:12:02,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:02,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:12:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:02,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:02,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:02,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:12:02,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:02,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 18:12:02,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:02,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:12:02,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:02,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:12:02,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:02,476 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 18:12:02,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455144844] [2020-09-24 18:12:02,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:12:02,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:12:02,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927904763] [2020-09-24 18:12:02,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:12:02,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:12:02,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:12:02,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:12:02,479 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 7 states. [2020-09-24 18:12:02,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:12:02,575 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2020-09-24 18:12:02,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 18:12:02,575 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-24 18:12:02,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:12:02,577 INFO L225 Difference]: With dead ends: 48 [2020-09-24 18:12:02,577 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 18:12:02,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:12:02,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 18:12:02,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-24 18:12:02,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 18:12:02,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-09-24 18:12:02,585 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 36 [2020-09-24 18:12:02,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:12:02,585 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-09-24 18:12:02,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:12:02,585 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-09-24 18:12:02,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 18:12:02,587 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:12:02,587 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:12:02,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:12:02,587 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:12:02,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:12:02,588 INFO L82 PathProgramCache]: Analyzing trace with hash 404002040, now seen corresponding path program 1 times [2020-09-24 18:12:02,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:12:02,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619929814] [2020-09-24 18:12:02,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:12:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:02,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:02,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:02,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:02,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:02,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:04,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:04,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:12:04,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:12:04,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1555 [2020-09-24 18:12:04,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:04,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:12:04,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 18:12:04,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:12:04,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:04,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:12:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:04,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:04,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:04,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:12:04,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:04,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:12:04,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:04,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:04,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:04,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:04,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:04,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:12:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:04,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:04,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:04,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:04,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:04,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 18:12:04,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:12:04,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-24 18:12:04,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:04,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:12:04,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:04,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 18:12:04,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:04,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:12:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:04,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:04,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:04,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:12:04,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:04,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:12:04,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:04,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:12:04,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:04,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:12:04,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:04,437 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 18:12:04,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619929814] [2020-09-24 18:12:04,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:12:04,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:12:04,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518834048] [2020-09-24 18:12:04,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:12:04,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:12:04,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:12:04,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:12:04,440 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 7 states. [2020-09-24 18:12:04,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:12:04,535 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2020-09-24 18:12:04,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 18:12:04,536 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-24 18:12:04,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:12:04,537 INFO L225 Difference]: With dead ends: 53 [2020-09-24 18:12:04,537 INFO L226 Difference]: Without dead ends: 47 [2020-09-24 18:12:04,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:12:04,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-24 18:12:04,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-09-24 18:12:04,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 18:12:04,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-09-24 18:12:04,546 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 36 [2020-09-24 18:12:04,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:12:04,546 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-09-24 18:12:04,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:12:04,547 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-09-24 18:12:04,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 18:12:04,548 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:12:04,549 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-09-24 18:12:04,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:12:04,549 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:12:04,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:12:04,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1010225367, now seen corresponding path program 1 times [2020-09-24 18:12:04,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:12:04,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582114863] [2020-09-24 18:12:04,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:12:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:04,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:04,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:04,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:04,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:04,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:04,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:04,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:05,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:09,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:09,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 18:12:09,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:12:09,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4668 [2020-09-24 18:12:09,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:09,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:12:09,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 18:12:09,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 18:12:09,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:09,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:12:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:09,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:09,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:09,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:12:09,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:09,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:12:09,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:09,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:09,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:09,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:09,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:09,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:12:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:09,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:09,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:09,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:09,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:09,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:09,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:10,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:10,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 18:12:10,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:12:10,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 876 [2020-09-24 18:12:10,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:12:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 18:12:10,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:10,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:12:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:10,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:10,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:10,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:10,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:10,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 18:12:10,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:12:10,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-24 18:12:10,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:12:10,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:10,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 18:12:10,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:10,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:12:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:10,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:10,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:10,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:12:10,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:10,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:12:10,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:10,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:12:10,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:10,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:12:10,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:10,492 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-24 18:12:10,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582114863] [2020-09-24 18:12:10,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:12:10,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 18:12:10,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427215397] [2020-09-24 18:12:10,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:12:10,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:12:10,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:12:10,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:12:10,495 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 8 states. [2020-09-24 18:12:10,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:12:10,626 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-09-24 18:12:10,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:12:10,627 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-09-24 18:12:10,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:12:10,628 INFO L225 Difference]: With dead ends: 47 [2020-09-24 18:12:10,628 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 18:12:10,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-09-24 18:12:10,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 18:12:10,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 18:12:10,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 18:12:10,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 18:12:10,633 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2020-09-24 18:12:10,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:12:10,633 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 18:12:10,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:12:10,633 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 18:12:10,633 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 18:12:10,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:12:10,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 18:12:10,768 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 18:12:10,768 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:12:10,768 INFO L268 CegarLoopResult]: For program point gcdFINAL(lines 15 26) no Hoare annotation was computed. [2020-09-24 18:12:10,768 INFO L268 CegarLoopResult]: For program point gcdEXIT(lines 15 26) no Hoare annotation was computed. [2020-09-24 18:12:10,769 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (= gcd_~y2 |gcd_#in~y2|) (<= (+ gcd_~y1 1) gcd_~y2) (= gcd_~y1 |gcd_#in~y1|) (<= 1 gcd_~y1)) [2020-09-24 18:12:10,769 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-24 18:12:10,769 INFO L271 CegarLoopResult]: At program point gcdENTRY(lines 15 26) the Hoare annotation is: true [2020-09-24 18:12:10,769 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (<= 1 gcd_~y2) (<= (+ gcd_~y2 1) gcd_~y1) (= gcd_~y2 |gcd_#in~y2|) (= gcd_~y1 |gcd_#in~y1|)) [2020-09-24 18:12:10,769 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-24 18:12:10,770 INFO L268 CegarLoopResult]: For program point L22(lines 22 24) no Hoare annotation was computed. [2020-09-24 18:12:10,770 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-24 18:12:10,770 INFO L268 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-09-24 18:12:10,770 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-24 18:12:10,770 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 18:12:10,770 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-24 18:12:10,770 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-09-24 18:12:10,771 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 18:12:10,771 INFO L268 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-09-24 18:12:10,771 INFO L268 CegarLoopResult]: For program point L15(lines 15 26) no Hoare annotation was computed. [2020-09-24 18:12:10,771 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:12:10,771 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 18:12:10,771 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 18:12:10,772 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 18:12:10,772 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-24 18:12:10,772 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-24 18:12:10,772 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-24 18:12:10,772 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-24 18:12:10,772 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-24 18:12:10,772 INFO L268 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-09-24 18:12:10,773 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 28 43) no Hoare annotation was computed. [2020-09-24 18:12:10,773 INFO L268 CegarLoopResult]: For program point L38(lines 38 42) no Hoare annotation was computed. [2020-09-24 18:12:10,773 INFO L268 CegarLoopResult]: For program point L38-1(lines 28 43) no Hoare annotation was computed. [2020-09-24 18:12:10,773 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-09-24 18:12:10,773 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2020-09-24 18:12:10,773 INFO L268 CegarLoopResult]: For program point L30(lines 30 32) no Hoare annotation was computed. [2020-09-24 18:12:10,774 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 28 43) the Hoare annotation is: true [2020-09-24 18:12:10,774 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-24 18:12:10,774 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-09-24 18:12:10,774 INFO L271 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: true [2020-09-24 18:12:10,774 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-09-24 18:12:10,775 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-24 18:12:10,775 INFO L268 CegarLoopResult]: For program point L37-2(line 37) no Hoare annotation was computed. [2020-09-24 18:12:10,775 INFO L268 CegarLoopResult]: For program point L37-3(line 37) no Hoare annotation was computed. [2020-09-24 18:12:10,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:12:10 BoogieIcfgContainer [2020-09-24 18:12:10,783 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:12:10,786 INFO L168 Benchmark]: Toolchain (without parser) took 13750.31 ms. Allocated memory was 140.0 MB in the beginning and 322.4 MB in the end (delta: 182.5 MB). Free memory was 103.0 MB in the beginning and 236.5 MB in the end (delta: -133.5 MB). Peak memory consumption was 48.9 MB. Max. memory is 7.1 GB. [2020-09-24 18:12:10,787 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-09-24 18:12:10,788 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.13 ms. Allocated memory is still 140.0 MB. Free memory was 102.6 MB in the beginning and 93.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-24 18:12:10,789 INFO L168 Benchmark]: Boogie Preprocessor took 47.42 ms. Allocated memory is still 140.0 MB. Free memory was 93.0 MB in the beginning and 91.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-24 18:12:10,790 INFO L168 Benchmark]: RCFGBuilder took 461.57 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 91.7 MB in the beginning and 165.9 MB in the end (delta: -74.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-24 18:12:10,790 INFO L168 Benchmark]: TraceAbstraction took 12901.46 ms. Allocated memory was 201.3 MB in the beginning and 322.4 MB in the end (delta: 121.1 MB). Free memory was 165.0 MB in the beginning and 236.5 MB in the end (delta: -71.6 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. [2020-09-24 18:12:10,794 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 321.13 ms. Allocated memory is still 140.0 MB. Free memory was 102.6 MB in the beginning and 93.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.42 ms. Allocated memory is still 140.0 MB. Free memory was 93.0 MB in the beginning and 91.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 461.57 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 91.7 MB in the beginning and 165.9 MB in the end (delta: -74.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12901.46 ms. Allocated memory was 201.3 MB in the beginning and 322.4 MB in the end (delta: 121.1 MB). Free memory was 165.0 MB in the beginning and 236.5 MB in the end (delta: -71.6 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.6s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 226 SDtfs, 203 SDslu, 755 SDs, 0 SdLazy, 353 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 36 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 11.2s InterpolantComputationTime, 238 NumberOfCodeBlocks, 238 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 231 ConstructedInterpolants, 0 QuantifiedInterpolants, 15747 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 41/41 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...