/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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/Problem02_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:39:53,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:39:53,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:39:53,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:39:53,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:39:53,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:39:53,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:39:53,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:39:53,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:39:53,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:39:53,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:39:53,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:39:53,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:39:53,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:39:53,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:39:53,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:39:53,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:39:53,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:39:53,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:39:53,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:39:53,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:39:53,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:39:53,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:39:53,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:39:53,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:39:53,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:39:53,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:39:53,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:39:53,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:39:53,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:39:53,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:39:53,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:39:53,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:39:53,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:39:53,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:39:53,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:39:53,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:39:53,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:39:53,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:39:53,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:39:53,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:39:53,500 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 14:39:53,527 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:39:53,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:39:53,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:39:53,529 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:39:53,529 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:39:53,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:39:53,529 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:39:53,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:39:53,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:39:53,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:39:53,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:39:53,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:39:53,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:39:53,531 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:39:53,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:39:53,531 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:39:53,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:39:53,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:39:53,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:39:53,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:39:53,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:39:53,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:39:53,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:39:53,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:39:53,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:39:53,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:39:53,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:39:53,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:39:53,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:39:53,534 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:39:53,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:39:53,995 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:39:53,999 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:39:54,000 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:39:54,001 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:39:54,002 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label33.c [2020-09-25 14:39:54,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/928a56c85/57df645813d34a04be0298df0295e44b/FLAG7fffee86c [2020-09-25 14:39:54,757 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:39:54,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label33.c [2020-09-25 14:39:54,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/928a56c85/57df645813d34a04be0298df0295e44b/FLAG7fffee86c [2020-09-25 14:39:54,959 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/928a56c85/57df645813d34a04be0298df0295e44b [2020-09-25 14:39:54,976 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:39:54,982 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:39:54,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:39:54,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:39:54,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:39:54,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:39:54" (1/1) ... [2020-09-25 14:39:54,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112bbb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:54, skipping insertion in model container [2020-09-25 14:39:54,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:39:54" (1/1) ... [2020-09-25 14:39:55,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:39:55,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:39:55,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:39:55,658 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:39:55,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:39:55,883 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:39:55,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:55 WrapperNode [2020-09-25 14:39:55,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:39:55,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:39:55,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:39:55,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:39:55,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:55" (1/1) ... [2020-09-25 14:39:55,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:55" (1/1) ... [2020-09-25 14:39:55,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:55" (1/1) ... [2020-09-25 14:39:55,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:55" (1/1) ... [2020-09-25 14:39:55,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:55" (1/1) ... [2020-09-25 14:39:55,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:55" (1/1) ... [2020-09-25 14:39:55,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:55" (1/1) ... [2020-09-25 14:39:55,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:39:55,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:39:55,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:39:55,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:39:55,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:55" (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 14:39:56,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:39:56,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:39:56,075 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:39:56,075 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:39:56,075 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:39:56,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:39:56,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:39:56,076 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:39:56,076 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:39:56,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:39:56,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:39:57,403 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:39:57,404 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:39:57,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:39:57 BoogieIcfgContainer [2020-09-25 14:39:57,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:39:57,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:39:57,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:39:57,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:39:57,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:39:54" (1/3) ... [2020-09-25 14:39:57,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2566a626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:39:57, skipping insertion in model container [2020-09-25 14:39:57,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:55" (2/3) ... [2020-09-25 14:39:57,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2566a626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:39:57, skipping insertion in model container [2020-09-25 14:39:57,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:39:57" (3/3) ... [2020-09-25 14:39:57,424 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label33.c [2020-09-25 14:39:57,437 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:39:57,449 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:39:57,471 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:39:57,506 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:39:57,507 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:39:57,507 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:39:57,507 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:39:57,507 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:39:57,507 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:39:57,508 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:39:57,508 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:39:57,541 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 14:39:57,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 14:39:57,564 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:39:57,566 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:39:57,566 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:39:57,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:39:57,575 INFO L82 PathProgramCache]: Analyzing trace with hash 341026450, now seen corresponding path program 1 times [2020-09-25 14:39:57,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:39:57,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142353674] [2020-09-25 14:39:57,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:39:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:58,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:58,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:58,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:59,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:00,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:01,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:01,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:02,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:02,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:02,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:02,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:02,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 14:40:02,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:40:02,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 14:40:02,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:02,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:02,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:40:02,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 14:40:02,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-09-25 14:40:02,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:40:03,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:03,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:03,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:03,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:03,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:03,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 14:40:03,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:03,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:03,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:03,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:03,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:40:03,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:03,298 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 14:40:03,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142353674] [2020-09-25 14:40:03,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:40:03,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:40:03,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658791199] [2020-09-25 14:40:03,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:40:03,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:03,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:40:03,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:40:03,333 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 14:40:05,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:05,533 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 14:40:05,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:40:05,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-09-25 14:40:05,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:05,561 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 14:40:05,562 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 14:40:05,573 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 14:40:05,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 14:40:05,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 14:40:05,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 14:40:05,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 14:40:05,684 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 167 [2020-09-25 14:40:05,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:05,688 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 14:40:05,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:40:05,688 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 14:40:05,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 14:40:05,701 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:05,701 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:40:05,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:40:05,702 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:05,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:05,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1817628535, now seen corresponding path program 1 times [2020-09-25 14:40:05,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:05,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339438458] [2020-09-25 14:40:05,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:05,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:05,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:05,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:06,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:10,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:10,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 14:40:10,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:40:10,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 14:40:10,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:10,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:10,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:40:10,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 14:40:10,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 14:40:10,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 14:40:10,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:10,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:11,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:11,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:11,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:11,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:40:11,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:11,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:11,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:11,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:11,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:11,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:11,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:11,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:11,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:11,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:11,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 14:40:11,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:11,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 14:40:11,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:11,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:11,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:40:11,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:11,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 14:40:11,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:11,453 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:11,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339438458] [2020-09-25 14:40:11,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:11,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 14:40:11,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244909624] [2020-09-25 14:40:11,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 14:40:11,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:11,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 14:40:11,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:40:11,458 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 11 states. [2020-09-25 14:40:14,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:14,725 INFO L93 Difference]: Finished difference Result 1925 states and 2547 transitions. [2020-09-25 14:40:14,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:40:14,726 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 201 [2020-09-25 14:40:14,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:14,733 INFO L225 Difference]: With dead ends: 1925 [2020-09-25 14:40:14,733 INFO L226 Difference]: Without dead ends: 729 [2020-09-25 14:40:14,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:40:14,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2020-09-25 14:40:14,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 716. [2020-09-25 14:40:14,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 716 states. [2020-09-25 14:40:14,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 838 transitions. [2020-09-25 14:40:14,776 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 838 transitions. Word has length 201 [2020-09-25 14:40:14,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:14,777 INFO L479 AbstractCegarLoop]: Abstraction has 716 states and 838 transitions. [2020-09-25 14:40:14,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 14:40:14,777 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 838 transitions. [2020-09-25 14:40:14,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-25 14:40:14,780 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:14,781 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:40:14,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:40:14,781 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:14,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:14,782 INFO L82 PathProgramCache]: Analyzing trace with hash 527414775, now seen corresponding path program 1 times [2020-09-25 14:40:14,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:14,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798983558] [2020-09-25 14:40:14,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:14,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:14,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:15,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:15,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:16,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:17,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:17,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:18,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:19,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:19,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:19,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:19,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:19,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 14:40:19,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 14:40:19,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 14:40:19,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:19,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:19,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:40:19,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 14:40:19,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 14:40:19,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:20,535 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2020-09-25 14:40:20,739 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 37 [2020-09-25 14:40:20,905 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-09-25 14:40:21,066 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 28 [2020-09-25 14:40:21,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:21,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:21,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:21,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:21,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:21,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 14:40:21,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:21,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:21,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:21,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 14:40:21,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:40:21,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:21,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:21,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:21,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:21,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:40:21,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:40:21,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-25 14:40:21,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:21,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:21,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:40:21,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:21,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 14:40:21,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:40:22,056 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:22,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798983558] [2020-09-25 14:40:22,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:22,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 14:40:22,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482711664] [2020-09-25 14:40:22,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 14:40:22,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:22,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 14:40:22,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:40:22,067 INFO L87 Difference]: Start difference. First operand 716 states and 838 transitions. Second operand 17 states. [2020-09-25 14:40:25,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:25,216 INFO L93 Difference]: Finished difference Result 1352 states and 1607 transitions. [2020-09-25 14:40:25,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:40:25,217 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 202 [2020-09-25 14:40:25,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:25,221 INFO L225 Difference]: With dead ends: 1352 [2020-09-25 14:40:25,221 INFO L226 Difference]: Without dead ends: 658 [2020-09-25 14:40:25,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-09-25 14:40:25,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-09-25 14:40:25,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 648. [2020-09-25 14:40:25,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-09-25 14:40:25,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 709 transitions. [2020-09-25 14:40:25,250 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 709 transitions. Word has length 202 [2020-09-25 14:40:25,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:25,250 INFO L479 AbstractCegarLoop]: Abstraction has 648 states and 709 transitions. [2020-09-25 14:40:25,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 14:40:25,250 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 709 transitions. [2020-09-25 14:40:25,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-25 14:40:25,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:25,255 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 14:40:25,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:40:25,255 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:25,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:25,256 INFO L82 PathProgramCache]: Analyzing trace with hash -42939684, now seen corresponding path program 1 times [2020-09-25 14:40:25,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:25,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179130180] [2020-09-25 14:40:25,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:25,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:25,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:25,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:26,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:27,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:30,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:30,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-25 14:40:30,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:40:30,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 14:40:30,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:30,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:30,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:40:30,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-25 14:40:30,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 14:40:30,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:30,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:30,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:30,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:30,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:30,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:30,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:40:30,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:30,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:30,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:30,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:30,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:30,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:30,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:30,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:30,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:30,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:40:30,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:30,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:40:30,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:30,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:30,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:30,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:30,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:30,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:30,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 14:40:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:30,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:30,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:30,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 14:40:30,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:30,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 14:40:30,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:30,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:30,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:30,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:30,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 14:40:30,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:40:31,141 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-25 14:40:31,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179130180] [2020-09-25 14:40:31,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:31,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:40:31,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654470773] [2020-09-25 14:40:31,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:40:31,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:31,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:40:31,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:40:31,145 INFO L87 Difference]: Start difference. First operand 648 states and 709 transitions. Second operand 8 states. [2020-09-25 14:40:33,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:33,882 INFO L93 Difference]: Finished difference Result 1564 states and 1718 transitions. [2020-09-25 14:40:33,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:40:33,882 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 245 [2020-09-25 14:40:33,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:33,890 INFO L225 Difference]: With dead ends: 1564 [2020-09-25 14:40:33,890 INFO L226 Difference]: Without dead ends: 809 [2020-09-25 14:40:33,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:40:33,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2020-09-25 14:40:33,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 794. [2020-09-25 14:40:33,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-09-25 14:40:33,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 864 transitions. [2020-09-25 14:40:33,917 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 864 transitions. Word has length 245 [2020-09-25 14:40:33,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:33,917 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 864 transitions. [2020-09-25 14:40:33,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:40:33,917 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 864 transitions. [2020-09-25 14:40:33,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-09-25 14:40:33,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:33,922 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, 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, 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] [2020-09-25 14:40:33,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:40:33,923 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:33,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:33,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1703944871, now seen corresponding path program 1 times [2020-09-25 14:40:33,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:33,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395453381] [2020-09-25 14:40:33,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:34,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:34,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:34,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:34,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:37,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:38,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:38,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-09-25 14:40:38,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:40:38,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 14:40:38,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:38,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:38,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:40:38,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 14:40:38,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 14:40:38,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:40:39,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:39,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:39,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:39,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:39,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:39,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:40:39,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:39,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:39,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:39,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:39,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:39,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:39,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:39,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:39,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:39,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 14:40:39,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:39,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-09-25 14:40:39,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:39,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:39,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:40:39,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:39,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 14:40:39,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:39,941 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 72 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:39,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395453381] [2020-09-25 14:40:39,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:39,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 14:40:39,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438786754] [2020-09-25 14:40:39,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 14:40:39,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:39,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 14:40:39,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:40:39,944 INFO L87 Difference]: Start difference. First operand 794 states and 864 transitions. Second operand 11 states. [2020-09-25 14:40:42,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:42,926 INFO L93 Difference]: Finished difference Result 1972 states and 2209 transitions. [2020-09-25 14:40:42,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:40:42,927 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 251 [2020-09-25 14:40:42,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:42,929 INFO L225 Difference]: With dead ends: 1972 [2020-09-25 14:40:42,929 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 14:40:42,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:40:42,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 14:40:42,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 14:40:42,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 14:40:42,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 14:40:42,934 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 251 [2020-09-25 14:40:42,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:42,936 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 14:40:42,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 14:40:42,936 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 14:40:42,936 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 14:40:42,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:40:42,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.