/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/eca-rers2012/Problem01_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:19:47,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:19:47,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:19:47,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:19:47,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:19:47,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:19:47,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:19:47,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:19:47,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:19:47,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:19:47,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:19:47,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:19:47,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:19:47,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:19:47,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:19:47,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:19:47,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:19:47,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:19:47,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:19:47,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:19:47,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:19:47,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:19:47,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:19:47,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:19:47,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:19:47,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:19:47,489 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:19:47,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:19:47,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:19:47,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:19:47,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:19:47,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:19:47,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:19:47,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:19:47,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:19:47,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:19:47,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:19:47,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:19:47,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:19:47,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:19:47,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:19:47,509 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 18:19:47,555 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:19:47,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:19:47,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:19:47,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:19:47,559 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:19:47,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:19:47,559 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:19:47,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:19:47,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:19:47,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:19:47,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:19:47,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:19:47,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:19:47,562 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:19:47,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:19:47,562 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:19:47,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:19:47,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:19:47,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:19:47,563 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:19:47,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:19:47,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:19:47,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:19:47,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:19:47,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:19:47,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:19:47,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:19:47,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:19:47,565 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:19:47,565 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 18:19:48,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:19:48,019 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:19:48,023 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:19:48,025 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:19:48,026 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:19:48,027 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2020-09-24 18:19:48,121 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c2e923bc/970f5eb33f1f41aa86f788359c3dc99f/FLAG208274f02 [2020-09-24 18:19:48,809 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:19:48,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2020-09-24 18:19:48,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c2e923bc/970f5eb33f1f41aa86f788359c3dc99f/FLAG208274f02 [2020-09-24 18:19:49,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c2e923bc/970f5eb33f1f41aa86f788359c3dc99f [2020-09-24 18:19:49,025 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:19:49,034 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:19:49,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:19:49,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:19:49,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:19:49,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:19:49" (1/1) ... [2020-09-24 18:19:49,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f78b0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:49, skipping insertion in model container [2020-09-24 18:19:49,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:19:49" (1/1) ... [2020-09-24 18:19:49,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:19:49,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:19:49,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:19:49,611 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:19:49,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:19:49,879 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:19:49,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:49 WrapperNode [2020-09-24 18:19:49,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:19:49,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:19:49,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:19:49,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:19:49,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:49" (1/1) ... [2020-09-24 18:19:49,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:49" (1/1) ... [2020-09-24 18:19:49,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:49" (1/1) ... [2020-09-24 18:19:49,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:49" (1/1) ... [2020-09-24 18:19:49,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:49" (1/1) ... [2020-09-24 18:19:49,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:49" (1/1) ... [2020-09-24 18:19:49,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:49" (1/1) ... [2020-09-24 18:19:49,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:19:49,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:19:49,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:19:49,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:19:50,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:49" (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 18:19:50,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:19:50,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:19:50,097 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:19:50,097 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:19:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:19:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:19:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:19:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:19:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:19:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:19:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:19:51,441 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:19:51,441 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:19:51,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:19:51 BoogieIcfgContainer [2020-09-24 18:19:51,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:19:51,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:19:51,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:19:51,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:19:51,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:19:49" (1/3) ... [2020-09-24 18:19:51,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6b3b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:19:51, skipping insertion in model container [2020-09-24 18:19:51,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:49" (2/3) ... [2020-09-24 18:19:51,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6b3b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:19:51, skipping insertion in model container [2020-09-24 18:19:51,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:19:51" (3/3) ... [2020-09-24 18:19:51,462 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label31.c [2020-09-24 18:19:51,475 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:19:51,487 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:19:51,511 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:19:51,549 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:19:51,549 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:19:51,549 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:19:51,549 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:19:51,549 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:19:51,550 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:19:51,550 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:19:51,550 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:19:51,585 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 18:19:51,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-24 18:19:51,606 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:51,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:51,609 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:51,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:51,616 INFO L82 PathProgramCache]: Analyzing trace with hash -21747025, now seen corresponding path program 1 times [2020-09-24 18:19:51,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:51,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424349087] [2020-09-24 18:19:51,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:52,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:52,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:52,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:53,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:53,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:54,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:55,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:56,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:56,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-24 18:19:56,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:19:56,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 18:19:56,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:56,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:19:56,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:19:56,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-24 18:19:56,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:19:57,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:57,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:57,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:57,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:57,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:57,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 18:19:57,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:19:57,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:57,241 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 18:19:57,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424349087] [2020-09-24 18:19:57,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:19:57,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:19:57,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818140997] [2020-09-24 18:19:57,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:19:57,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:57,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:19:57,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:19:57,276 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-24 18:19:59,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:59,586 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-24 18:19:59,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:19:59,588 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-09-24 18:19:59,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:59,615 INFO L225 Difference]: With dead ends: 1340 [2020-09-24 18:19:59,615 INFO L226 Difference]: Without dead ends: 741 [2020-09-24 18:19:59,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:19:59,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-24 18:19:59,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-24 18:19:59,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-24 18:19:59,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-24 18:19:59,765 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 120 [2020-09-24 18:19:59,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:59,768 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-24 18:19:59,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:19:59,768 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-24 18:19:59,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-24 18:19:59,787 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:59,791 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:59,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:19:59,792 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:59,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:59,792 INFO L82 PathProgramCache]: Analyzing trace with hash -858442752, now seen corresponding path program 1 times [2020-09-24 18:19:59,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:59,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754273904] [2020-09-24 18:19:59,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:59,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:00,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:00,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:00,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:00,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:03,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:03,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-24 18:20:03,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:20:03,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3225 [2020-09-24 18:20:03,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:03,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:03,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 18:20:03,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-24 18:20:03,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:03,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:03,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:03,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:03,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:03,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:03,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:20:03,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:03,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:03,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:03,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:03,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:03,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:03,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:03,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:03,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:20:03,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:03,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:20:03,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:03,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:03,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:03,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:20:03,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:03,339 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:03,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754273904] [2020-09-24 18:20:03,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:03,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:20:03,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708102354] [2020-09-24 18:20:03,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:20:03,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:03,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:20:03,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:20:03,346 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 5 states. [2020-09-24 18:20:05,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:05,758 INFO L93 Difference]: Finished difference Result 1677 states and 2045 transitions. [2020-09-24 18:20:05,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:20:05,759 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-24 18:20:05,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:05,765 INFO L225 Difference]: With dead ends: 1677 [2020-09-24 18:20:05,766 INFO L226 Difference]: Without dead ends: 1037 [2020-09-24 18:20:05,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:20:05,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2020-09-24 18:20:05,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 950. [2020-09-24 18:20:05,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-09-24 18:20:05,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1136 transitions. [2020-09-24 18:20:05,808 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1136 transitions. Word has length 141 [2020-09-24 18:20:05,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:05,810 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1136 transitions. [2020-09-24 18:20:05,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:20:05,810 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1136 transitions. [2020-09-24 18:20:05,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-24 18:20:05,815 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:05,816 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:05,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:20:05,816 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:05,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:05,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1279661441, now seen corresponding path program 1 times [2020-09-24 18:20:05,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:05,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820095324] [2020-09-24 18:20:05,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:05,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:06,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:06,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:06,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:06,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:06,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:06,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:06,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:08,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:09,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:09,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:10,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:10,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-24 18:20:10,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 18:20:10,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-24 18:20:10,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:10,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:10,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-24 18:20:10,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-24 18:20:10,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:11,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:11,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:11,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:11,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:11,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:11,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:20:11,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:11,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:11,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:11,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:11,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:11,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:11,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:11,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:11,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:20:11,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:11,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 18:20:11,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:11,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:11,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:11,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:20:11,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:11,176 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:11,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820095324] [2020-09-24 18:20:11,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:11,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:20:11,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479929062] [2020-09-24 18:20:11,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:20:11,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:11,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:20:11,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:20:11,181 INFO L87 Difference]: Start difference. First operand 950 states and 1136 transitions. Second operand 5 states. [2020-09-24 18:20:13,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:13,518 INFO L93 Difference]: Finished difference Result 2246 states and 2746 transitions. [2020-09-24 18:20:13,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:20:13,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-24 18:20:13,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:13,527 INFO L225 Difference]: With dead ends: 2246 [2020-09-24 18:20:13,528 INFO L226 Difference]: Without dead ends: 1320 [2020-09-24 18:20:13,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:20:13,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2020-09-24 18:20:13,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1258. [2020-09-24 18:20:13,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1258 states. [2020-09-24 18:20:13,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1500 transitions. [2020-09-24 18:20:13,570 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1500 transitions. Word has length 148 [2020-09-24 18:20:13,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:13,571 INFO L479 AbstractCegarLoop]: Abstraction has 1258 states and 1500 transitions. [2020-09-24 18:20:13,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:20:13,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1500 transitions. [2020-09-24 18:20:13,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-24 18:20:13,577 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:13,578 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:13,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:20:13,578 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:13,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:13,579 INFO L82 PathProgramCache]: Analyzing trace with hash -2002935625, now seen corresponding path program 1 times [2020-09-24 18:20:13,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:13,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393608322] [2020-09-24 18:20:13,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:13,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:13,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:13,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:13,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:13,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:14,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:15,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:15,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:18,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:18,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:18,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-24 18:20:18,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:20:18,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-24 18:20:18,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:18,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:18,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 18:20:18,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 18:20:18,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:18,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:18,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:18,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:18,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:18,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:18,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:20:18,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:18,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:18,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:18,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:18,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:18,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:18,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:18,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:18,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:20:18,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:18,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 18:20:18,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:18,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:18,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:18,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:20:18,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:18,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:20:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:18,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:18,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:18,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 18:20:18,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:18,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 18:20:18,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:18,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:18,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:20:18,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 18:20:18,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:18,904 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:20:18,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393608322] [2020-09-24 18:20:18,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:18,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:20:18,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037634640] [2020-09-24 18:20:18,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:20:18,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:18,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:20:18,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:20:18,909 INFO L87 Difference]: Start difference. First operand 1258 states and 1500 transitions. Second operand 7 states. [2020-09-24 18:20:21,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:21,976 INFO L93 Difference]: Finished difference Result 3843 states and 4878 transitions. [2020-09-24 18:20:21,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:20:21,977 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-09-24 18:20:21,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:21,993 INFO L225 Difference]: With dead ends: 3843 [2020-09-24 18:20:21,993 INFO L226 Difference]: Without dead ends: 2609 [2020-09-24 18:20:22,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:20:22,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2609 states. [2020-09-24 18:20:22,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2609 to 2438. [2020-09-24 18:20:22,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2438 states. [2020-09-24 18:20:22,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2438 states to 2438 states and 3025 transitions. [2020-09-24 18:20:22,087 INFO L78 Accepts]: Start accepts. Automaton has 2438 states and 3025 transitions. Word has length 166 [2020-09-24 18:20:22,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:22,087 INFO L479 AbstractCegarLoop]: Abstraction has 2438 states and 3025 transitions. [2020-09-24 18:20:22,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:20:22,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2438 states and 3025 transitions. [2020-09-24 18:20:22,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-24 18:20:22,104 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:22,105 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:22,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:20:22,105 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:22,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:22,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1760089574, now seen corresponding path program 1 times [2020-09-24 18:20:22,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:22,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815247682] [2020-09-24 18:20:22,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:22,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:22,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:22,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:22,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:22,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:22,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:22,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:22,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:22,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:25,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:25,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:27,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:27,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-24 18:20:27,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 18:20:27,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-24 18:20:27,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:27,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:27,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-24 18:20:27,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-24 18:20:27,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:27,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:27,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:27,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:27,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:27,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:27,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:20:27,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:27,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:27,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:27,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:27,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:27,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:27,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:27,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:27,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 18:20:27,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:27,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 18:20:27,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:27,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:27,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:27,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:20:27,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:27,419 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:27,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815247682] [2020-09-24 18:20:27,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:27,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:20:27,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408056494] [2020-09-24 18:20:27,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:20:27,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:27,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:20:27,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:20:27,422 INFO L87 Difference]: Start difference. First operand 2438 states and 3025 transitions. Second operand 5 states. [2020-09-24 18:20:29,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:29,663 INFO L93 Difference]: Finished difference Result 5452 states and 6896 transitions. [2020-09-24 18:20:29,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:20:29,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-09-24 18:20:29,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:29,688 INFO L225 Difference]: With dead ends: 5452 [2020-09-24 18:20:29,688 INFO L226 Difference]: Without dead ends: 2365 [2020-09-24 18:20:29,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:20:29,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2020-09-24 18:20:29,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2355. [2020-09-24 18:20:29,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2355 states. [2020-09-24 18:20:29,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 2842 transitions. [2020-09-24 18:20:29,798 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 2842 transitions. Word has length 167 [2020-09-24 18:20:29,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:29,798 INFO L479 AbstractCegarLoop]: Abstraction has 2355 states and 2842 transitions. [2020-09-24 18:20:29,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:20:29,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 2842 transitions. [2020-09-24 18:20:29,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-24 18:20:29,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:29,812 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:29,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:20:29,812 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:29,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:29,812 INFO L82 PathProgramCache]: Analyzing trace with hash -819909468, now seen corresponding path program 1 times [2020-09-24 18:20:29,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:29,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395149103] [2020-09-24 18:20:29,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:29,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:29,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:30,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:30,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:30,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:30,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:30,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:30,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:31,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:31,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:34,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:34,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-24 18:20:34,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:20:34,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 18:20:34,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:34,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:34,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-24 18:20:34,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 18:20:34,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:34,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:34,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:34,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:34,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:34,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:34,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 18:20:34,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:34,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:34,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:34,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:34,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:35,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:35,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:35,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:35,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:20:35,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:35,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:20:35,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:35,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:35,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:35,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:35,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:35,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 18:20:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:35,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:35,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:35,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:35,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:35,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 18:20:35,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:35,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:35,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:35,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:20:35,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:35,090 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 18:20:35,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395149103] [2020-09-24 18:20:35,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:35,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:20:35,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122770906] [2020-09-24 18:20:35,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:20:35,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:35,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:20:35,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:20:35,092 INFO L87 Difference]: Start difference. First operand 2355 states and 2842 transitions. Second operand 5 states.