/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:21:03,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:21:03,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:21:03,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:21:03,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:21:03,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:21:03,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:21:03,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:21:03,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:21:03,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:21:03,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:21:03,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:21:03,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:21:03,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:21:03,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:21:03,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:21:03,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:21:03,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:21:03,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:21:03,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:21:03,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:21:03,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:21:03,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:21:03,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:21:03,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:21:03,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:21:03,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:21:03,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:21:03,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:21:03,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:21:03,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:21:03,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:21:03,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:21:03,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:21:03,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:21:03,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:21:03,978 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:21:03,978 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:21:03,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:21:03,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:21:03,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:21:03,981 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:21:04,030 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:21:04,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:21:04,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:21:04,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:21:04,033 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:21:04,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:21:04,033 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:21:04,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:21:04,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:21:04,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:21:04,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:21:04,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:21:04,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:21:04,036 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:21:04,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:21:04,036 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:21:04,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:21:04,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:21:04,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:21:04,037 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:21:04,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:21:04,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:21:04,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:21:04,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:21:04,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:21:04,039 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:21:04,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:21:04,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:21:04,039 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:21:04,040 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:21:04,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:21:04,524 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:21:04,528 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:21:04,530 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:21:04,531 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:21:04,532 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label07.c [2020-09-25 12:21:04,611 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2635ef3fb/29e693a9132943d09eb03eefa6218770/FLAG403a6c322 [2020-09-25 12:21:05,277 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:21:05,278 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label07.c [2020-09-25 12:21:05,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2635ef3fb/29e693a9132943d09eb03eefa6218770/FLAG403a6c322 [2020-09-25 12:21:05,501 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2635ef3fb/29e693a9132943d09eb03eefa6218770 [2020-09-25 12:21:05,516 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:21:05,522 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:21:05,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:21:05,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:21:05,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:21:05,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:21:05" (1/1) ... [2020-09-25 12:21:05,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cd4ce29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:05, skipping insertion in model container [2020-09-25 12:21:05,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:21:05" (1/1) ... [2020-09-25 12:21:05,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:21:05,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:21:06,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:21:06,178 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:21:06,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:21:06,393 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:21:06,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:06 WrapperNode [2020-09-25 12:21:06,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:21:06,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:21:06,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:21:06,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:21:06,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:06" (1/1) ... [2020-09-25 12:21:06,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:06" (1/1) ... [2020-09-25 12:21:06,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:06" (1/1) ... [2020-09-25 12:21:06,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:06" (1/1) ... [2020-09-25 12:21:06,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:06" (1/1) ... [2020-09-25 12:21:06,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:06" (1/1) ... [2020-09-25 12:21:06,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:06" (1/1) ... [2020-09-25 12:21:06,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:21:06,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:21:06,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:21:06,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:21:06,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:21:06,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:21:06,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:21:06,715 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:21:06,715 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:21:06,716 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:21:06,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:21:06,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:21:06,716 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:21:06,717 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:21:06,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:21:06,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:21:08,463 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:21:08,464 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:21:08,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:21:08 BoogieIcfgContainer [2020-09-25 12:21:08,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:21:08,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:21:08,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:21:08,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:21:08,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:21:05" (1/3) ... [2020-09-25 12:21:08,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f458e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:21:08, skipping insertion in model container [2020-09-25 12:21:08,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:06" (2/3) ... [2020-09-25 12:21:08,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f458e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:21:08, skipping insertion in model container [2020-09-25 12:21:08,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:21:08" (3/3) ... [2020-09-25 12:21:08,485 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label07.c [2020-09-25 12:21:08,495 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:21:08,506 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:21:08,528 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:21:08,567 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:21:08,567 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:21:08,568 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:21:08,568 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:21:08,568 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:21:08,568 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:21:08,568 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:21:08,568 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:21:08,597 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 12:21:08,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 12:21:08,618 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:08,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:08,620 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:08,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:08,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1257233759, now seen corresponding path program 1 times [2020-09-25 12:21:08,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:08,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770742548] [2020-09-25 12:21:08,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:09,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:09,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:09,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:10,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:13,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:13,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:13,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 12:21:13,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:21:13,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 12:21:13,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:13,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:13,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:21:13,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 12:21:13,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 12:21:13,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:21:14,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:14,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:14,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:14,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:14,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:14,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 12:21:14,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:14,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:14,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:14,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:14,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 12:21:14,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:14,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:14,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770742548] [2020-09-25 12:21:14,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:21:14,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:21:14,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847773887] [2020-09-25 12:21:14,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:21:14,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:14,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:21:14,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:21:14,272 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 12:21:16,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:16,410 INFO L93 Difference]: Finished difference Result 1270 states and 1669 transitions. [2020-09-25 12:21:16,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:21:16,412 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-09-25 12:21:16,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:16,436 INFO L225 Difference]: With dead ends: 1270 [2020-09-25 12:21:16,436 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 12:21:16,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:21:16,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 12:21:16,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 603. [2020-09-25 12:21:16,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 12:21:16,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 731 transitions. [2020-09-25 12:21:16,550 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 731 transitions. Word has length 132 [2020-09-25 12:21:16,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:16,553 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 731 transitions. [2020-09-25 12:21:16,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:21:16,553 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 731 transitions. [2020-09-25 12:21:16,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 12:21:16,567 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:16,568 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:16,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:21:16,568 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:16,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:16,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1159952749, now seen corresponding path program 1 times [2020-09-25 12:21:16,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:16,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838768384] [2020-09-25 12:21:16,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:16,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:16,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:17,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:17,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:20,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:21,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:21,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 12:21:21,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:21:21,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 12:21:21,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:21,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:21,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 12:21:21,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 12:21:21,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 12:21:21,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:22,356 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 39 [2020-09-25 12:21:22,486 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 38 [2020-09-25 12:21:22,635 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-09-25 12:21:22,774 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 34 [2020-09-25 12:21:22,929 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 32 [2020-09-25 12:21:22,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:23,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:23,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:23,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:23,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:23,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 12:21:23,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:23,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:23,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:23,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:23,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:21:23,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:23,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:23,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:23,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:23,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:23,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:21:23,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:21:23,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-25 12:21:23,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:23,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:23,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:21:23,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:23,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:21:23,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:23,540 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:23,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838768384] [2020-09-25 12:21:23,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:23,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 12:21:23,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564009745] [2020-09-25 12:21:23,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 12:21:23,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:23,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 12:21:23,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:21:23,545 INFO L87 Difference]: Start difference. First operand 603 states and 731 transitions. Second operand 19 states. [2020-09-25 12:21:24,515 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-09-25 12:21:24,766 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-09-25 12:21:25,068 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-09-25 12:21:25,375 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-09-25 12:21:25,718 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 90 [2020-09-25 12:21:26,373 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 89 [2020-09-25 12:21:26,768 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2020-09-25 12:21:26,940 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2020-09-25 12:21:27,624 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-09-25 12:21:28,400 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 87 [2020-09-25 12:21:28,703 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-09-25 12:21:29,052 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2020-09-25 12:21:29,377 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-09-25 12:21:30,039 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-09-25 12:21:30,653 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 85 [2020-09-25 12:21:31,069 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-09-25 12:21:31,638 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-25 12:21:32,289 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-09-25 12:21:32,970 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-09-25 12:21:34,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:34,060 INFO L93 Difference]: Finished difference Result 1968 states and 2591 transitions. [2020-09-25 12:21:34,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-25 12:21:34,061 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-09-25 12:21:34,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:34,070 INFO L225 Difference]: With dead ends: 1968 [2020-09-25 12:21:34,071 INFO L226 Difference]: Without dead ends: 1389 [2020-09-25 12:21:34,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=682, Invalid=1768, Unknown=0, NotChecked=0, Total=2450 [2020-09-25 12:21:34,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2020-09-25 12:21:34,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1280. [2020-09-25 12:21:34,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1280 states. [2020-09-25 12:21:34,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1533 transitions. [2020-09-25 12:21:34,132 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1533 transitions. Word has length 154 [2020-09-25 12:21:34,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:34,133 INFO L479 AbstractCegarLoop]: Abstraction has 1280 states and 1533 transitions. [2020-09-25 12:21:34,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 12:21:34,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1533 transitions. [2020-09-25 12:21:34,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 12:21:34,139 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:34,140 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:34,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:21:34,140 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:34,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:34,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1274964758, now seen corresponding path program 1 times [2020-09-25 12:21:34,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:34,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851719338] [2020-09-25 12:21:34,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:34,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:34,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:34,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:35,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:35,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:36,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:36,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:37,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:38,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:39,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:39,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 12:21:39,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:21:39,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-25 12:21:39,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:39,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 12:21:39,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 12:21:39,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:39,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:39,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:39,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:39,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:39,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:39,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:21:39,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:39,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:39,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:39,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:39,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:39,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:39,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:39,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:39,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:39,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:21:39,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:39,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 12:21:39,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:39,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:39,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:39,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:39,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 12:21:39,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:39,472 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:39,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851719338] [2020-09-25 12:21:39,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:39,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:21:39,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448526603] [2020-09-25 12:21:39,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:21:39,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:39,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:21:39,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:21:39,475 INFO L87 Difference]: Start difference. First operand 1280 states and 1533 transitions. Second operand 5 states. [2020-09-25 12:21:41,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:41,274 INFO L93 Difference]: Finished difference Result 2998 states and 3728 transitions. [2020-09-25 12:21:41,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:21:41,275 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 12:21:41,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:41,292 INFO L225 Difference]: With dead ends: 2998 [2020-09-25 12:21:41,293 INFO L226 Difference]: Without dead ends: 1742 [2020-09-25 12:21:41,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:21:41,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2020-09-25 12:21:41,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1709. [2020-09-25 12:21:41,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1709 states. [2020-09-25 12:21:41,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2102 transitions. [2020-09-25 12:21:41,375 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2102 transitions. Word has length 161 [2020-09-25 12:21:41,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:41,376 INFO L479 AbstractCegarLoop]: Abstraction has 1709 states and 2102 transitions. [2020-09-25 12:21:41,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:21:41,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2102 transitions. [2020-09-25 12:21:41,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 12:21:41,387 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:41,388 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:41,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:21:41,388 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:41,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:41,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1406452310, now seen corresponding path program 1 times [2020-09-25 12:21:41,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:41,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944636889] [2020-09-25 12:21:41,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:41,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:41,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:41,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:42,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:42,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:43,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:46,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:46,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 12:21:46,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:21:46,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 12:21:46,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:46,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:46,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:21:46,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 12:21:46,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 12:21:46,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:46,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:46,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:46,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:46,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:46,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:46,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 12:21:46,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:46,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:46,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:46,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:46,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 12:21:46,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:46,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:46,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:46,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:46,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:46,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:21:46,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:21:46,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 12:21:46,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:46,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:46,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:46,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:21:46,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:21:46,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:46,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 12:21:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:46,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:46,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:46,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:21:46,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:46,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 12:21:46,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:46,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:21:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:21:46,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:46,862 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 12:21:46,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944636889] [2020-09-25 12:21:46,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:46,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:21:46,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210299244] [2020-09-25 12:21:46,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:21:46,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:46,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:21:46,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:21:46,866 INFO L87 Difference]: Start difference. First operand 1709 states and 2102 transitions. Second operand 8 states. [2020-09-25 12:21:48,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:48,874 INFO L93 Difference]: Finished difference Result 3955 states and 5033 transitions. [2020-09-25 12:21:48,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:21:48,874 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 186 [2020-09-25 12:21:48,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:48,891 INFO L225 Difference]: With dead ends: 3955 [2020-09-25 12:21:48,891 INFO L226 Difference]: Without dead ends: 2270 [2020-09-25 12:21:48,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:21:48,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2020-09-25 12:21:48,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 2185. [2020-09-25 12:21:48,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2185 states. [2020-09-25 12:21:49,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2185 states to 2185 states and 2739 transitions. [2020-09-25 12:21:49,008 INFO L78 Accepts]: Start accepts. Automaton has 2185 states and 2739 transitions. Word has length 186 [2020-09-25 12:21:49,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:49,008 INFO L479 AbstractCegarLoop]: Abstraction has 2185 states and 2739 transitions. [2020-09-25 12:21:49,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:21:49,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2185 states and 2739 transitions. [2020-09-25 12:21:49,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 12:21:49,019 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:49,020 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:49,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:21:49,020 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:49,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:49,020 INFO L82 PathProgramCache]: Analyzing trace with hash -269597623, now seen corresponding path program 1 times [2020-09-25 12:21:49,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:49,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563311676] [2020-09-25 12:21:49,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:49,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:49,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:49,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:49,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:50,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:50,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:50,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:50,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:50,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:50,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:54,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:54,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 12:21:54,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:21:54,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 12:21:54,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:54,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:54,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:21:54,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-09-25 12:21:54,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 12:21:54,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:54,803 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 42 [2020-09-25 12:21:54,977 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 41 [2020-09-25 12:21:55,145 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 39 [2020-09-25 12:21:55,311 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 37 [2020-09-25 12:21:55,480 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 35 [2020-09-25 12:21:55,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:55,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:55,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:55,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:55,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:55,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:21:55,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:55,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:55,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:55,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:55,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:55,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:55,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:55,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:55,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:55,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 12:21:55,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:55,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:21:55,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:55,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:55,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:55,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:55,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:55,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:55,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 12:21:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:55,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:55,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:55,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:21:55,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:55,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 12:21:55,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:55,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:55,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:21:55,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:55,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:21:55,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:55,932 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 12:21:55,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563311676] [2020-09-25 12:21:55,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:55,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 12:21:55,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294526679] [2020-09-25 12:21:55,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 12:21:55,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:55,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 12:21:55,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:21:55,934 INFO L87 Difference]: Start difference. First operand 2185 states and 2739 transitions. Second operand 16 states.