/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:59:46,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:59:46,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:59:46,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:59:46,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:59:46,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:59:46,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:59:46,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:59:46,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:59:46,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:59:46,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:59:46,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:59:46,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:59:46,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:59:46,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:59:46,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:59:46,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:59:46,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:59:46,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:59:46,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:59:46,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:59:46,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:59:46,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:59:46,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:59:46,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:59:46,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:59:46,499 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:59:46,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:59:46,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:59:46,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:59:46,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:59:46,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:59:46,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:59:46,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:59:46,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:59:46,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:59:46,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:59:46,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:59:46,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:59:46,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:59:46,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:59:46,516 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 08:59:46,546 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:59:46,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:59:46,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:59:46,548 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:59:46,548 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:59:46,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:59:46,549 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:59:46,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:59:46,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:59:46,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:59:46,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:59:46,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:59:46,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:59:46,550 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:59:46,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:59:46,551 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:59:46,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:59:46,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:59:46,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:59:46,552 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:59:46,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:59:46,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:59:46,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:59:46,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:59:46,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:59:46,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:59:46,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:59:46,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:59:46,554 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:59:46,554 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:59:47,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:59:47,037 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:59:47,042 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:59:47,044 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:59:47,044 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:59:47,045 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label06.c [2020-09-25 08:59:47,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9925d73a9/02c129355c06483095a625bf6b709791/FLAG462ae4444 [2020-09-25 08:59:47,803 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:59:47,804 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label06.c [2020-09-25 08:59:47,821 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9925d73a9/02c129355c06483095a625bf6b709791/FLAG462ae4444 [2020-09-25 08:59:47,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9925d73a9/02c129355c06483095a625bf6b709791 [2020-09-25 08:59:48,005 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:59:48,011 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:59:48,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:59:48,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:59:48,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:59:48,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:59:47" (1/1) ... [2020-09-25 08:59:48,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88af870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:48, skipping insertion in model container [2020-09-25 08:59:48,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:59:47" (1/1) ... [2020-09-25 08:59:48,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:59:48,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:59:48,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:59:48,820 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:59:48,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:59:48,932 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:59:48,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:48 WrapperNode [2020-09-25 08:59:48,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:59:48,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:59:48,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:59:48,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:59:48,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:48" (1/1) ... [2020-09-25 08:59:48,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:48" (1/1) ... [2020-09-25 08:59:48,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:48" (1/1) ... [2020-09-25 08:59:48,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:48" (1/1) ... [2020-09-25 08:59:49,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:48" (1/1) ... [2020-09-25 08:59:49,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:48" (1/1) ... [2020-09-25 08:59:49,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:48" (1/1) ... [2020-09-25 08:59:49,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:59:49,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:59:49,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:59:49,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:59:49,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:59:49,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:59:49,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:59:49,188 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 08:59:49,188 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:59:49,189 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 08:59:49,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:59:49,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:59:49,189 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 08:59:49,189 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:59:49,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:59:49,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:59:50,553 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:59:50,554 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 08:59:50,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:59:50 BoogieIcfgContainer [2020-09-25 08:59:50,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:59:50,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:59:50,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:59:50,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:59:50,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:59:47" (1/3) ... [2020-09-25 08:59:50,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ece744c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:59:50, skipping insertion in model container [2020-09-25 08:59:50,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:48" (2/3) ... [2020-09-25 08:59:50,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ece744c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:59:50, skipping insertion in model container [2020-09-25 08:59:50,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:59:50" (3/3) ... [2020-09-25 08:59:50,574 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label06.c [2020-09-25 08:59:50,586 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:59:50,603 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:59:50,627 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:59:50,666 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:59:50,667 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:59:50,667 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:59:50,667 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:59:50,667 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:59:50,667 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:59:50,667 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:59:50,668 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:59:50,705 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 08:59:50,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 08:59:50,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:50,730 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:50,730 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:50,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:50,739 INFO L82 PathProgramCache]: Analyzing trace with hash 730138415, now seen corresponding path program 1 times [2020-09-25 08:59:50,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:50,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316023275] [2020-09-25 08:59:50,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:51,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:51,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:52,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:52,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:54,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:55,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:55,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:56,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:56,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 08:59:56,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:59:56,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 08:59:56,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:56,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:56,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:59:56,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 08:59:56,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 08:59:56,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:59:56,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:56,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:56,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:56,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 08:59:56,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:56,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 08:59:56,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:56,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:56,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:59:56,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:56,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 08:59:56,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:56,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:56,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316023275] [2020-09-25 08:59:56,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:56,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:59:56,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100961900] [2020-09-25 08:59:56,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:59:56,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:56,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:59:56,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:59:56,432 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 08:59:58,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:58,608 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 08:59:58,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:59:58,611 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-09-25 08:59:58,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:58,636 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 08:59:58,636 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 08:59:58,647 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 [2020-09-25 08:59:58,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 08:59:58,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 08:59:58,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 08:59:58,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 08:59:58,762 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 152 [2020-09-25 08:59:58,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:58,763 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 08:59:58,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:59:58,764 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 08:59:58,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 08:59:58,775 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:58,775 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:58,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:59:58,776 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:58,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:58,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1669034880, now seen corresponding path program 1 times [2020-09-25 08:59:58,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:58,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354636684] [2020-09-25 08:59:58,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:58,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:58,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:59,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:59,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:59,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:00,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:01,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:03,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:03,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 09:00:03,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:00:03,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 09:00:03,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:03,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:03,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:00:03,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 09:00:03,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 09:00:03,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:00:04,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:04,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:04,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:04,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:04,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:04,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:00:04,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:04,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:04,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:04,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:04,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:04,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:04,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:04,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:04,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:04,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:00:04,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:04,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 09:00:04,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:04,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:04,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:00:04,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:04,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:00:04,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:04,472 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:00:04,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354636684] [2020-09-25 09:00:04,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:04,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 09:00:04,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127539131] [2020-09-25 09:00:04,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:00:04,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:04,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:00:04,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:00:04,509 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 9 states. [2020-09-25 09:00:09,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:09,500 INFO L93 Difference]: Finished difference Result 2178 states and 2848 transitions. [2020-09-25 09:00:09,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:00:09,501 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 173 [2020-09-25 09:00:09,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:09,517 INFO L225 Difference]: With dead ends: 2178 [2020-09-25 09:00:09,517 INFO L226 Difference]: Without dead ends: 1100 [2020-09-25 09:00:09,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-09-25 09:00:09,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2020-09-25 09:00:09,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 1064. [2020-09-25 09:00:09,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2020-09-25 09:00:09,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1200 transitions. [2020-09-25 09:00:09,585 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1200 transitions. Word has length 173 [2020-09-25 09:00:09,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:09,587 INFO L479 AbstractCegarLoop]: Abstraction has 1064 states and 1200 transitions. [2020-09-25 09:00:09,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:00:09,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1200 transitions. [2020-09-25 09:00:09,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 09:00:09,594 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:09,595 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:09,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:00:09,595 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:09,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:09,596 INFO L82 PathProgramCache]: Analyzing trace with hash -139356601, now seen corresponding path program 1 times [2020-09-25 09:00:09,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:09,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564484599] [2020-09-25 09:00:09,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:09,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:09,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:09,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:10,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:10,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:10,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:14,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:14,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:14,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:14,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 09:00:14,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:00:14,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 09:00:14,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:14,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:14,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:14,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 09:00:14,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 09:00:14,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:14,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:14,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:14,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:14,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:14,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:14,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:00:14,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:14,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:14,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:14,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:14,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:14,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:14,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:14,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:14,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:14,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:00:14,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:14,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 09:00:14,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:14,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:14,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:14,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:14,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:00:14,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:14,973 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:00:14,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564484599] [2020-09-25 09:00:14,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:14,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:00:14,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013257199] [2020-09-25 09:00:14,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:00:14,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:14,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:00:14,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:00:14,976 INFO L87 Difference]: Start difference. First operand 1064 states and 1200 transitions. Second operand 5 states. [2020-09-25 09:00:17,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:17,107 INFO L93 Difference]: Finished difference Result 2456 states and 2855 transitions. [2020-09-25 09:00:17,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:00:17,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-09-25 09:00:17,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:17,124 INFO L225 Difference]: With dead ends: 2456 [2020-09-25 09:00:17,125 INFO L226 Difference]: Without dead ends: 1416 [2020-09-25 09:00:17,128 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 [2020-09-25 09:00:17,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2020-09-25 09:00:17,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1352. [2020-09-25 09:00:17,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2020-09-25 09:00:17,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1563 transitions. [2020-09-25 09:00:17,184 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1563 transitions. Word has length 178 [2020-09-25 09:00:17,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:17,184 INFO L479 AbstractCegarLoop]: Abstraction has 1352 states and 1563 transitions. [2020-09-25 09:00:17,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:00:17,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1563 transitions. [2020-09-25 09:00:17,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 09:00:17,191 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:17,192 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:17,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:00:17,192 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:17,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:17,195 INFO L82 PathProgramCache]: Analyzing trace with hash -114572164, now seen corresponding path program 1 times [2020-09-25 09:00:17,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:17,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846582477] [2020-09-25 09:00:17,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:17,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:17,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:17,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:17,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:19,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:19,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:19,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:19,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:19,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:20,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:22,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:22,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-25 09:00:22,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 09:00:22,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 09:00:22,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:22,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:22,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:00:22,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:00:22,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 09:00:22,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:22,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:22,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:22,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:22,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:22,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:22,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 09:00:22,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:22,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:22,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:00:22,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:22,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:00:22,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:22,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:22,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:22,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:22,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 09:00:22,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:22,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 09:00:22,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:22,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:22,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:22,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:22,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 09:00:22,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:22,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 09:00:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:22,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:22,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:22,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:00:22,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:22,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:00:22,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:22,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:22,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:22,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 09:00:22,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:22,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:22,619 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 09:00:22,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846582477] [2020-09-25 09:00:22,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:22,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:00:22,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279646457] [2020-09-25 09:00:22,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:00:22,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:22,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:00:22,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:00:22,623 INFO L87 Difference]: Start difference. First operand 1352 states and 1563 transitions. Second operand 8 states. [2020-09-25 09:00:25,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:25,763 INFO L93 Difference]: Finished difference Result 3835 states and 4656 transitions. [2020-09-25 09:00:25,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 09:00:25,766 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 197 [2020-09-25 09:00:25,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:25,779 INFO L225 Difference]: With dead ends: 3835 [2020-09-25 09:00:25,779 INFO L226 Difference]: Without dead ends: 2507 [2020-09-25 09:00:25,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-09-25 09:00:25,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2020-09-25 09:00:25,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2403. [2020-09-25 09:00:25,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2403 states. [2020-09-25 09:00:25,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 2841 transitions. [2020-09-25 09:00:25,878 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 2841 transitions. Word has length 197 [2020-09-25 09:00:25,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:25,879 INFO L479 AbstractCegarLoop]: Abstraction has 2403 states and 2841 transitions. [2020-09-25 09:00:25,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:00:25,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 2841 transitions. [2020-09-25 09:00:25,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-25 09:00:25,892 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:25,892 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:25,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:00:25,893 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:25,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:25,893 INFO L82 PathProgramCache]: Analyzing trace with hash 183414329, now seen corresponding path program 1 times [2020-09-25 09:00:25,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:25,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132379449] [2020-09-25 09:00:25,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:25,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:26,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:26,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:26,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:27,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:29,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:29,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:29,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:31,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:31,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-09-25 09:00:31,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:00:31,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-09-25 09:00:31,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:31,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:31,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:00:31,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-09-25 09:00:31,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 09:00:31,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:31,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:31,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:31,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:31,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:31,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:31,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:00:31,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:31,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:31,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:31,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:31,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:31,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:31,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:31,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:31,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:31,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:00:31,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:31,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 09:00:31,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:31,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:31,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:31,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:31,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:31,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:31,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 09:00:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:31,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:31,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:31,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 09:00:31,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:31,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 09:00:31,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:31,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:31,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:31,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:31,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:31,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:31,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 09:00:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:31,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:31,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:31,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:31,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:31,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 09:00:31,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:31,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:31,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:00:31,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:31,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 09:00:31,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:32,423 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 64 proven. 3 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-25 09:00:32,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132379449] [2020-09-25 09:00:32,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:32,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:00:32,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545386975] [2020-09-25 09:00:32,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:00:32,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:32,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:00:32,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:00:32,429 INFO L87 Difference]: Start difference. First operand 2403 states and 2841 transitions. Second operand 10 states.