/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:49:35,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:49:35,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:49:35,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:49:35,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:49:35,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:49:35,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:49:35,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:49:35,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:49:35,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:49:35,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:49:35,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:49:35,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:49:35,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:49:35,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:49:35,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:49:35,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:49:35,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:49:35,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:49:35,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:49:35,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:49:35,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:49:35,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:49:35,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:49:35,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:49:35,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:49:35,499 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:49:35,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:49:35,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:49:35,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:49:35,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:49:35,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:49:35,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:49:35,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:49:35,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:49:35,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:49:35,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:49:35,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:49:35,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:49:35,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:49:35,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:49:35,511 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 [2020-10-12 14:49:35,536 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:49:35,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:49:35,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:49:35,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:49:35,539 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:49:35,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:49:35,540 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:49:35,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:49:35,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:49:35,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:49:35,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:49:35,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:49:35,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:49:35,541 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:49:35,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:49:35,542 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:49:35,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:49:35,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:49:35,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:49:35,542 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:49:35,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:49:35,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:49:35,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:49:35,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:49:35,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:49:35,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:49:35,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:49:35,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:49:35,544 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:49:35,544 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 14:49:35,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:49:35,899 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:49:35,904 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:49:35,906 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:49:35,907 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:49:35,908 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label43.c [2020-10-12 14:49:36,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a06aff46f/5d1d4e6dad5d45f58d13b868468ff3cd/FLAG000eccb7c [2020-10-12 14:49:36,946 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:49:36,947 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label43.c [2020-10-12 14:49:36,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a06aff46f/5d1d4e6dad5d45f58d13b868468ff3cd/FLAG000eccb7c [2020-10-12 14:49:37,468 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a06aff46f/5d1d4e6dad5d45f58d13b868468ff3cd [2020-10-12 14:49:37,485 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:49:37,488 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:49:37,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:49:37,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:49:37,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:49:37,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:49:37" (1/1) ... [2020-10-12 14:49:37,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4164e930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:49:37, skipping insertion in model container [2020-10-12 14:49:37,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:49:37" (1/1) ... [2020-10-12 14:49:37,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:49:37,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:49:39,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:49:39,054 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:49:39,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:49:39,622 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:49:39,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:49:39 WrapperNode [2020-10-12 14:49:39,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:49:39,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:49:39,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:49:39,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:49:39,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:49:39" (1/1) ... [2020-10-12 14:49:39,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:49:39" (1/1) ... [2020-10-12 14:49:39,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:49:39" (1/1) ... [2020-10-12 14:49:39,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:49:39" (1/1) ... [2020-10-12 14:49:39,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:49:39" (1/1) ... [2020-10-12 14:49:39,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:49:39" (1/1) ... [2020-10-12 14:49:39,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:49:39" (1/1) ... [2020-10-12 14:49:39,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:49:39,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:49:39,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:49:39,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:49:39,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:49:39" (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 [2020-10-12 14:49:40,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:49:40,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:49:40,068 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:49:40,069 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 14:49:40,070 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:49:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:49:40,072 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 14:49:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:49:40,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:49:40,074 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:49:40,075 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:49:40,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:49:40,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:49:47,927 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:49:47,928 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:49:47,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:49:47 BoogieIcfgContainer [2020-10-12 14:49:47,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:49:47,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:49:47,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:49:47,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:49:47,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:49:37" (1/3) ... [2020-10-12 14:49:47,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@839df58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:49:47, skipping insertion in model container [2020-10-12 14:49:47,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:49:39" (2/3) ... [2020-10-12 14:49:47,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@839df58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:49:47, skipping insertion in model container [2020-10-12 14:49:47,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:49:47" (3/3) ... [2020-10-12 14:49:47,954 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label43.c [2020-10-12 14:49:47,964 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:49:47,976 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:49:47,994 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:49:48,031 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:49:48,032 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:49:48,032 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:49:48,032 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:49:48,032 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:49:48,032 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:49:48,032 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:49:48,032 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:49:48,067 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-12 14:49:48,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 14:49:48,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:49:48,082 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] [2020-10-12 14:49:48,083 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:49:48,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:49:48,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1883299281, now seen corresponding path program 1 times [2020-10-12 14:49:48,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:49:48,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98348447] [2020-10-12 14:49:48,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:49:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:49:48,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:49:48,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:49:48,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 14:49:48,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:49:48,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-10-12 14:49:48,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:49:48,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:49:48,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:49:48,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 14:49:48,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 14:49:49,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:49:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:49:49,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:49:49,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:49:49,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:49:49,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:49:49,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 14:49:49,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:49:49,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:49:49,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:49:49,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:49:49,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:49:49,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:49:49,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98348447] [2020-10-12 14:49:49,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:49:49,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 14:49:49,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270727405] [2020-10-12 14:49:49,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 14:49:49,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:49:49,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 14:49:49,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 14:49:49,192 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-12 14:49:59,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:49:59,370 INFO L93 Difference]: Finished difference Result 1690 states and 3086 transitions. [2020-10-12 14:49:59,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:49:59,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-12 14:49:59,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:49:59,398 INFO L225 Difference]: With dead ends: 1690 [2020-10-12 14:49:59,399 INFO L226 Difference]: Without dead ends: 1010 [2020-10-12 14:49:59,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:49:59,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-10-12 14:49:59,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 1003. [2020-10-12 14:49:59,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-12 14:49:59,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1499 transitions. [2020-10-12 14:49:59,553 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1499 transitions. Word has length 68 [2020-10-12 14:49:59,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:49:59,556 INFO L479 AbstractCegarLoop]: Abstraction has 1003 states and 1499 transitions. [2020-10-12 14:49:59,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 14:49:59,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1499 transitions. [2020-10-12 14:49:59,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-12 14:49:59,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:49:59,574 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:49:59,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:49:59,576 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:49:59,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:49:59,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1351608824, now seen corresponding path program 1 times [2020-10-12 14:49:59,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:49:59,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716023988] [2020-10-12 14:49:59,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:49:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:49:59,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:49:59,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:50:00,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:50:04,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:50:04,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 14:50:04,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:50:04,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4738 [2020-10-12 14:50:04,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:50:04,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 14:50:04,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-12 14:50:04,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 14:50:04,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:50:05,319 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2020-10-12 14:50:05,486 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2020-10-12 14:50:05,631 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2020-10-12 14:50:05,794 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2020-10-12 14:50:05,978 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-10-12 14:50:06,192 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2020-10-12 14:50:06,392 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2020-10-12 14:50:06,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:50:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:50:06,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:50:06,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:50:06,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:50:06,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:50:06,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:50:06,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:50:06,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:50:06,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:50:06,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:50:06,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:50:06,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:50:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:50:06,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:50:06,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:50:06,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 14:50:06,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:50:06,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-12 14:50:06,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:50:06,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:50:06,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:50:06,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 14:50:06,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:50:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:50:07,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716023988] [2020-10-12 14:50:07,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:50:07,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 14:50:07,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188649578] [2020-10-12 14:50:07,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 14:50:07,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:50:07,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 14:50:07,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=222, Unknown=0, NotChecked=0, Total=380 [2020-10-12 14:50:07,230 INFO L87 Difference]: Start difference. First operand 1003 states and 1499 transitions. Second operand 20 states. [2020-10-12 14:50:21,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:50:21,204 INFO L93 Difference]: Finished difference Result 2384 states and 3420 transitions. [2020-10-12 14:50:21,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-12 14:50:21,209 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 142 [2020-10-12 14:50:21,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:50:21,223 INFO L225 Difference]: With dead ends: 2384 [2020-10-12 14:50:21,224 INFO L226 Difference]: Without dead ends: 1007 [2020-10-12 14:50:21,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=478, Invalid=782, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 14:50:21,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2020-10-12 14:50:21,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 1003. [2020-10-12 14:50:21,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-12 14:50:21,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1390 transitions. [2020-10-12 14:50:21,280 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1390 transitions. Word has length 142 [2020-10-12 14:50:21,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:50:21,281 INFO L479 AbstractCegarLoop]: Abstraction has 1003 states and 1390 transitions. [2020-10-12 14:50:21,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 14:50:21,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1390 transitions. [2020-10-12 14:50:21,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-12 14:50:21,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:50:21,287 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:50:21,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:50:21,288 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:50:21,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:50:21,288 INFO L82 PathProgramCache]: Analyzing trace with hash -327965028, now seen corresponding path program 1 times [2020-10-12 14:50:21,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:50:21,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970236120] [2020-10-12 14:50:21,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:50:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:50:21,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:50:21,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:50:21,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-12 14:50:21,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:50:21,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-12 14:50:21,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:50:21,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:50:21,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 14:50:21,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 14:50:21,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:50:21,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:50:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:50:21,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:50:21,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:50:21,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:50:21,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:50:21,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:50:21,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:50:21,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:50:21,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:50:21,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:50:21,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:50:21,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:50:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:50:21,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:50:22,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:50:22,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:50:22,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:50:22,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-12 14:50:22,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:50:22,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:50:22,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:50:22,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 14:50:22,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:50:22,159 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:50:22,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970236120] [2020-10-12 14:50:22,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:50:22,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:50:22,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130608404] [2020-10-12 14:50:22,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:50:22,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:50:22,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:50:22,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:50:22,166 INFO L87 Difference]: Start difference. First operand 1003 states and 1390 transitions. Second operand 5 states. [2020-10-12 14:50:32,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:50:32,153 INFO L93 Difference]: Finished difference Result 2896 states and 4047 transitions. [2020-10-12 14:50:32,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:50:32,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-12 14:50:32,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:50:32,169 INFO L225 Difference]: With dead ends: 2896 [2020-10-12 14:50:32,169 INFO L226 Difference]: Without dead ends: 1899 [2020-10-12 14:50:32,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:50:32,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2020-10-12 14:50:32,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1891. [2020-10-12 14:50:32,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1891 states. [2020-10-12 14:50:32,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 2617 transitions. [2020-10-12 14:50:32,242 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 2617 transitions. Word has length 155 [2020-10-12 14:50:32,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:50:32,245 INFO L479 AbstractCegarLoop]: Abstraction has 1891 states and 2617 transitions. [2020-10-12 14:50:32,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:50:32,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 2617 transitions. [2020-10-12 14:50:32,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 14:50:32,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:50:32,249 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:50:32,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:50:32,250 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:50:32,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:50:32,256 INFO L82 PathProgramCache]: Analyzing trace with hash -599397451, now seen corresponding path program 1 times [2020-10-12 14:50:32,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:50:32,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078847623] [2020-10-12 14:50:32,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:50:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:50:32,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:50:32,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:50:32,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:50:33,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:50:33,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:50:33,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:50:33,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-12 14:50:33,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 14:50:33,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1481 [2020-10-12 14:50:33,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:50:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:50:33,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:50:33,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-12 14:50:33,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:50:33,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:50:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:50:33,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:50:33,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:50:33,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:50:33,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:50:33,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 14:50:33,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:50:33,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:50:33,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:50:33,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:50:33,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:50:33,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:50:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:50:33,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:50:34,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:50:34,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:50:34,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:50:34,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 14:50:34,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:50:34,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-12 14:50:34,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:50:34,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:50:34,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:50:34,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 14:50:34,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:50:34,305 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 14:50:34,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078847623] [2020-10-12 14:50:34,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:50:34,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:50:34,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876349205] [2020-10-12 14:50:34,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:50:34,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:50:34,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:50:34,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:50:34,309 INFO L87 Difference]: Start difference. First operand 1891 states and 2617 transitions. Second operand 7 states. [2020-10-12 14:51:02,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:51:02,990 INFO L93 Difference]: Finished difference Result 5608 states and 7865 transitions. [2020-10-12 14:51:02,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:51:02,992 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-10-12 14:51:02,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:51:03,013 INFO L225 Difference]: With dead ends: 5608 [2020-10-12 14:51:03,013 INFO L226 Difference]: Without dead ends: 3723 [2020-10-12 14:51:03,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:51:03,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3723 states. [2020-10-12 14:51:03,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3723 to 3676. [2020-10-12 14:51:03,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3676 states. [2020-10-12 14:51:03,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 4765 transitions. [2020-10-12 14:51:03,125 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 4765 transitions. Word has length 164 [2020-10-12 14:51:03,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:51:03,125 INFO L479 AbstractCegarLoop]: Abstraction has 3676 states and 4765 transitions. [2020-10-12 14:51:03,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:51:03,126 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 4765 transitions. [2020-10-12 14:51:03,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-12 14:51:03,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:51:03,129 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:51:03,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:51:03,130 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:51:03,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:51:03,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1468448091, now seen corresponding path program 1 times [2020-10-12 14:51:03,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:51:03,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159949867] [2020-10-12 14:51:03,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:51:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:03,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:03,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:04,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:05,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:05,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-12 14:51:05,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:51:05,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1919 [2020-10-12 14:51:05,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:05,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:51:05,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:51:05,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-12 14:51:05,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:51:05,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:51:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:05,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:05,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:05,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:51:05,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:05,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 14:51:05,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:05,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:51:05,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:51:05,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:51:05,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:51:05,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:51:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:05,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:05,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:05,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-12 14:51:05,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:05,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-12 14:51:05,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:05,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:51:05,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:51:05,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-12 14:51:05,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:51:05,753 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:51:05,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159949867] [2020-10-12 14:51:05,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:51:05,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 14:51:05,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863453188] [2020-10-12 14:51:05,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:51:05,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:51:05,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:51:05,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:51:05,756 INFO L87 Difference]: Start difference. First operand 3676 states and 4765 transitions. Second operand 7 states. [2020-10-12 14:51:18,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:51:18,805 INFO L93 Difference]: Finished difference Result 5726 states and 7921 transitions. [2020-10-12 14:51:18,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 14:51:18,807 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2020-10-12 14:51:18,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:51:18,825 INFO L225 Difference]: With dead ends: 5726 [2020-10-12 14:51:18,825 INFO L226 Difference]: Without dead ends: 2489 [2020-10-12 14:51:18,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:51:18,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2020-10-12 14:51:18,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 2362. [2020-10-12 14:51:18,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2362 states. [2020-10-12 14:51:18,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 3120 transitions. [2020-10-12 14:51:18,923 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 3120 transitions. Word has length 209 [2020-10-12 14:51:18,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:51:18,923 INFO L479 AbstractCegarLoop]: Abstraction has 2362 states and 3120 transitions. [2020-10-12 14:51:18,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:51:18,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 3120 transitions. [2020-10-12 14:51:18,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-12 14:51:18,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:51:18,928 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, 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:51:18,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:51:18,928 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:51:18,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:51:18,929 INFO L82 PathProgramCache]: Analyzing trace with hash -332694767, now seen corresponding path program 1 times [2020-10-12 14:51:18,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:51:18,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067573224] [2020-10-12 14:51:18,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:51:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:19,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:19,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:19,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:20,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:22,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:22,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-12 14:51:22,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:51:22,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3496 [2020-10-12 14:51:22,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:22,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 14:51:22,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:51:22,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-12 14:51:22,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:51:22,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:51:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:22,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:22,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:22,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:51:22,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:22,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 14:51:22,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:22,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:51:22,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:51:22,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:51:22,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:51:22,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:51:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:22,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:23,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:23,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:51:23,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:23,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-12 14:51:23,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:23,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:51:23,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:51:23,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 14:51:23,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:51:23,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:51:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:23,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:23,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:23,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:51:23,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:23,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-12 14:51:23,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:23,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:51:23,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:51:23,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 14:51:23,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:51:23,443 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 14:51:23,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067573224] [2020-10-12 14:51:23,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:51:23,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:51:23,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728336193] [2020-10-12 14:51:23,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:51:23,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:51:23,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:51:23,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:51:23,447 INFO L87 Difference]: Start difference. First operand 2362 states and 3120 transitions. Second operand 8 states. [2020-10-12 14:51:42,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:51:42,509 INFO L93 Difference]: Finished difference Result 5275 states and 7465 transitions. [2020-10-12 14:51:42,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:51:42,511 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 226 [2020-10-12 14:51:42,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:51:42,529 INFO L225 Difference]: With dead ends: 5275 [2020-10-12 14:51:42,529 INFO L226 Difference]: Without dead ends: 3352 [2020-10-12 14:51:42,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:51:42,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3352 states. [2020-10-12 14:51:42,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3352 to 2845. [2020-10-12 14:51:42,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2845 states. [2020-10-12 14:51:42,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2845 states to 2845 states and 3700 transitions. [2020-10-12 14:51:42,626 INFO L78 Accepts]: Start accepts. Automaton has 2845 states and 3700 transitions. Word has length 226 [2020-10-12 14:51:42,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:51:42,627 INFO L479 AbstractCegarLoop]: Abstraction has 2845 states and 3700 transitions. [2020-10-12 14:51:42,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:51:42,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2845 states and 3700 transitions. [2020-10-12 14:51:42,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-12 14:51:42,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:51:42,632 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, 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, 3, 3, 3, 3, 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] [2020-10-12 14:51:42,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:51:42,633 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:51:42,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:51:42,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1952176443, now seen corresponding path program 1 times [2020-10-12 14:51:42,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:51:42,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794451863] [2020-10-12 14:51:42,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:51:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:42,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:42,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:43,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:44,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:44,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 14:51:44,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:51:44,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1871 [2020-10-12 14:51:44,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:44,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:51:44,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 14:51:44,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 14:51:44,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:51:44,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:51:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:44,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:44,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:44,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:51:44,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:44,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:51:44,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:44,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:51:44,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:51:44,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:51:44,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:51:44,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:51:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:44,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:44,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:44,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:51:44,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:44,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 14:51:44,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:44,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:51:44,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:51:44,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 14:51:44,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:51:44,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:51:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:44,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:44,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:44,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 14:51:44,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:44,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-12 14:51:44,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:44,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:51:44,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:51:44,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 14:51:44,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:51:45,085 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 14:51:45,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794451863] [2020-10-12 14:51:45,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:51:45,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:51:45,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340328240] [2020-10-12 14:51:45,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:51:45,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:51:45,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:51:45,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:51:45,091 INFO L87 Difference]: Start difference. First operand 2845 states and 3700 transitions. Second operand 7 states. [2020-10-12 14:52:01,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:52:01,390 INFO L93 Difference]: Finished difference Result 7153 states and 9884 transitions. [2020-10-12 14:52:01,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 14:52:01,393 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-10-12 14:52:01,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:52:01,418 INFO L225 Difference]: With dead ends: 7153 [2020-10-12 14:52:01,418 INFO L226 Difference]: Without dead ends: 4752 [2020-10-12 14:52:01,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:52:01,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4752 states. [2020-10-12 14:52:01,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4752 to 4690. [2020-10-12 14:52:01,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4690 states. [2020-10-12 14:52:01,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4690 states to 4690 states and 5984 transitions. [2020-10-12 14:52:01,561 INFO L78 Accepts]: Start accepts. Automaton has 4690 states and 5984 transitions. Word has length 232 [2020-10-12 14:52:01,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:52:01,562 INFO L479 AbstractCegarLoop]: Abstraction has 4690 states and 5984 transitions. [2020-10-12 14:52:01,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:52:01,562 INFO L276 IsEmpty]: Start isEmpty. Operand 4690 states and 5984 transitions. [2020-10-12 14:52:01,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-12 14:52:01,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:52:01,570 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:52:01,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:52:01,571 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:52:01,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:52:01,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1183445101, now seen corresponding path program 1 times [2020-10-12 14:52:01,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:52:01,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759391127] [2020-10-12 14:52:01,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:52:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:01,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:01,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:02,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:04,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:06,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:06,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-12 14:52:06,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:52:06,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-12 14:52:06,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:06,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:52:06,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 14:52:06,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-12 14:52:06,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:06,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:52:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:06,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:06,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:06,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:52:06,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:06,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:52:06,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:06,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:52:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:52:06,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:06,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:52:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:07,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:07,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:07,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:52:07,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:07,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-12 14:52:07,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:07,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:52:07,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:07,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 14:52:07,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:52:07,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:52:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:07,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:07,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:07,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:07,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:52:07,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:52:07,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-12 14:52:07,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:07,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:52:07,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:52:07,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 14:52:07,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:07,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-12 14:52:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:07,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:07,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:07,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 14:52:07,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:07,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-12 14:52:07,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:07,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:52:07,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:52:07,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 14:52:07,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:07,863 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 340 proven. 76 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 14:52:07,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759391127] [2020-10-12 14:52:07,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:52:07,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 14:52:07,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696654346] [2020-10-12 14:52:07,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 14:52:07,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:52:07,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 14:52:07,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-12 14:52:07,866 INFO L87 Difference]: Start difference. First operand 4690 states and 5984 transitions. Second operand 9 states. [2020-10-12 14:52:27,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:52:27,105 INFO L93 Difference]: Finished difference Result 9850 states and 12833 transitions. [2020-10-12 14:52:27,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 14:52:27,107 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 318 [2020-10-12 14:52:27,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:52:27,131 INFO L225 Difference]: With dead ends: 9850 [2020-10-12 14:52:27,132 INFO L226 Difference]: Without dead ends: 5607 [2020-10-12 14:52:27,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-10-12 14:52:27,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5607 states. [2020-10-12 14:52:27,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5607 to 4688. [2020-10-12 14:52:27,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4688 states. [2020-10-12 14:52:27,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4688 states to 4688 states and 5808 transitions. [2020-10-12 14:52:27,340 INFO L78 Accepts]: Start accepts. Automaton has 4688 states and 5808 transitions. Word has length 318 [2020-10-12 14:52:27,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:52:27,340 INFO L479 AbstractCegarLoop]: Abstraction has 4688 states and 5808 transitions. [2020-10-12 14:52:27,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 14:52:27,341 INFO L276 IsEmpty]: Start isEmpty. Operand 4688 states and 5808 transitions. [2020-10-12 14:52:27,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-12 14:52:27,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:52:27,351 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 14:52:27,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:52:27,352 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:52:27,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:52:27,352 INFO L82 PathProgramCache]: Analyzing trace with hash 776758187, now seen corresponding path program 1 times [2020-10-12 14:52:27,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:52:27,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423524332] [2020-10-12 14:52:27,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:52:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:27,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:27,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:28,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:28,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:32,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:32,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 347 [2020-10-12 14:52:32,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:52:32,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 14:52:32,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:32,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 14:52:32,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 279 [2020-10-12 14:52:32,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 14:52:32,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:32,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:52:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:32,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:32,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:32,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:52:32,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:32,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:52:32,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:32,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:52:32,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:32,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:52:32,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:32,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:52:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:32,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:32,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:32,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:52:32,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:32,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 14:52:32,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:32,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:52:32,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:32,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:52:32,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:32,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:52:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:33,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:33,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:33,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 14:52:33,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:33,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 14:52:33,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:33,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:52:33,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:33,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:52:33,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:33,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-12 14:52:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:33,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:33,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:33,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:52:33,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:33,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 14:52:33,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:33,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:52:33,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:33,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 14:52:33,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:33,375 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 186 proven. 3 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2020-10-12 14:52:33,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423524332] [2020-10-12 14:52:33,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:52:33,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:52:33,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337174125] [2020-10-12 14:52:33,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:52:33,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:52:33,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:52:33,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:52:33,377 INFO L87 Difference]: Start difference. First operand 4688 states and 5808 transitions. Second operand 8 states. [2020-10-12 14:52:37,752 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-12 14:52:37,999 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-12 14:52:38,664 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-10-12 14:52:55,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:52:55,362 INFO L93 Difference]: Finished difference Result 9072 states and 11339 transitions. [2020-10-12 14:52:55,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 14:52:55,372 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 333 [2020-10-12 14:52:55,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:52:55,393 INFO L225 Difference]: With dead ends: 9072 [2020-10-12 14:52:55,393 INFO L226 Difference]: Without dead ends: 4703 [2020-10-12 14:52:55,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:52:55,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4703 states. [2020-10-12 14:52:55,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4703 to 4688. [2020-10-12 14:52:55,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4688 states. [2020-10-12 14:52:55,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4688 states to 4688 states and 5792 transitions. [2020-10-12 14:52:55,515 INFO L78 Accepts]: Start accepts. Automaton has 4688 states and 5792 transitions. Word has length 333 [2020-10-12 14:52:55,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:52:55,516 INFO L479 AbstractCegarLoop]: Abstraction has 4688 states and 5792 transitions. [2020-10-12 14:52:55,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:52:55,516 INFO L276 IsEmpty]: Start isEmpty. Operand 4688 states and 5792 transitions. [2020-10-12 14:52:55,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-12 14:52:55,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:52:55,526 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 14:52:55,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 14:52:55,527 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:52:55,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:52:55,527 INFO L82 PathProgramCache]: Analyzing trace with hash -965461725, now seen corresponding path program 1 times [2020-10-12 14:52:55,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:52:55,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100521379] [2020-10-12 14:52:55,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:52:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:55,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:55,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:56,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:58,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:00,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:00,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-12 14:53:00,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:53:00,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 14:53:00,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:00,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:53:00,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 14:53:00,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 14:53:00,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:00,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:53:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:00,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:00,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:00,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:53:00,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:00,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:53:00,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:00,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:53:00,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:00,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:53:00,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:00,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:53:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:00,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:00,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:00,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:53:00,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:00,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 14:53:00,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:00,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:53:00,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:00,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 14:53:00,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:00,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:53:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:00,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:01,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:01,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 14:53:01,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:01,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-12 14:53:01,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:01,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:53:01,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:53:01,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 14:53:01,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:01,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-12 14:53:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:01,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:01,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:01,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 14:53:01,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:01,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 14:53:01,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:01,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:53:01,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-12 14:53:01,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:53:01,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:01,323 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 271 proven. 74 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-12 14:53:01,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100521379] [2020-10-12 14:53:01,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:53:01,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:53:01,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213077974] [2020-10-12 14:53:01,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:53:01,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:53:01,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:53:01,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:53:01,326 INFO L87 Difference]: Start difference. First operand 4688 states and 5792 transitions. Second operand 7 states. [2020-10-12 14:53:23,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:53:23,676 INFO L93 Difference]: Finished difference Result 12337 states and 15782 transitions. [2020-10-12 14:53:23,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:53:23,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 337 [2020-10-12 14:53:23,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:53:23,704 INFO L225 Difference]: With dead ends: 12337 [2020-10-12 14:53:23,704 INFO L226 Difference]: Without dead ends: 8096 [2020-10-12 14:53:23,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:53:23,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8096 states. [2020-10-12 14:53:23,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8096 to 7068. [2020-10-12 14:53:23,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7068 states. [2020-10-12 14:53:23,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7068 states to 7068 states and 8616 transitions. [2020-10-12 14:53:23,867 INFO L78 Accepts]: Start accepts. Automaton has 7068 states and 8616 transitions. Word has length 337 [2020-10-12 14:53:23,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:53:23,868 INFO L479 AbstractCegarLoop]: Abstraction has 7068 states and 8616 transitions. [2020-10-12 14:53:23,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:53:23,868 INFO L276 IsEmpty]: Start isEmpty. Operand 7068 states and 8616 transitions. [2020-10-12 14:53:23,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-12 14:53:23,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:53:23,882 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 14:53:23,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 14:53:23,883 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:53:23,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:53:23,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1311496007, now seen corresponding path program 1 times [2020-10-12 14:53:23,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:53:23,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792633821] [2020-10-12 14:53:23,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:53:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:24,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:24,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:24,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:26,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:27,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:27,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-12 14:53:27,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:53:27,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3917 [2020-10-12 14:53:27,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:27,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:53:27,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 285 [2020-10-12 14:53:27,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 14:53:27,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:28,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:53:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:28,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:28,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:28,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:53:28,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:28,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:53:28,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:28,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:53:28,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:28,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:53:28,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:28,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:53:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:28,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:28,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:28,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:53:28,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:28,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 14:53:28,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:28,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:53:28,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:28,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:53:28,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:28,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:53:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:28,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:28,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:28,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:53:28,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:28,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 14:53:28,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:28,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:53:28,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:28,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:53:28,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:28,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 14:53:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:28,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:28,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:28,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 14:53:28,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:28,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 14:53:28,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:28,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:53:28,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:28,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 14:53:28,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:28,258 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 186 proven. 3 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-12 14:53:28,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792633821] [2020-10-12 14:53:28,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:53:28,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:53:28,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420757383] [2020-10-12 14:53:28,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:53:28,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:53:28,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:53:28,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:53:28,260 INFO L87 Difference]: Start difference. First operand 7068 states and 8616 transitions. Second operand 5 states.