/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:37:38,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:37:38,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:37:38,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:37:38,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:37:38,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:37:38,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:37:38,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:37:38,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:37:38,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:37:38,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:37:38,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:37:38,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:37:38,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:37:38,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:37:38,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:37:38,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:37:38,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:37:38,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:37:38,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:37:38,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:37:38,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:37:38,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:37:38,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:37:38,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:37:38,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:37:38,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:37:38,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:37:38,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:37:38,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:37:38,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:37:38,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:37:38,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:37:38,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:37:38,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:37:38,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:37:38,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:37:38,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:37:38,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:37:38,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:37:38,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:37:38,584 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:37:38,611 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:37:38,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:37:38,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:37:38,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:37:38,613 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:37:38,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:37:38,613 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:37:38,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:37:38,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:37:38,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:37:38,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:37:38,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:37:38,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:37:38,615 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:37:38,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:37:38,615 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:37:38,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:37:38,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:37:38,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:37:38,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:37:38,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:37:38,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:37:38,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:37:38,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:37:38,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:37:38,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:37:38,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:37:38,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:37:38,618 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:37:38,618 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:37:39,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:37:39,127 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:37:39,132 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:37:39,134 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:37:39,135 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:37:39,136 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label46.c [2020-09-25 14:37:39,229 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8decba03f/e1409649cb034b70b786e431553d2c60/FLAGbfbcf6692 [2020-09-25 14:37:39,907 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:37:39,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label46.c [2020-09-25 14:37:39,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8decba03f/e1409649cb034b70b786e431553d2c60/FLAGbfbcf6692 [2020-09-25 14:37:40,119 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8decba03f/e1409649cb034b70b786e431553d2c60 [2020-09-25 14:37:40,138 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:37:40,144 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:37:40,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:37:40,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:37:40,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:37:40,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:37:40" (1/1) ... [2020-09-25 14:37:40,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:40, skipping insertion in model container [2020-09-25 14:37:40,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:37:40" (1/1) ... [2020-09-25 14:37:40,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:37:40,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:37:40,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:37:40,697 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:37:40,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:37:40,934 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:37:40,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:40 WrapperNode [2020-09-25 14:37:40,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:37:40,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:37:40,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:37:40,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:37:40,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:40" (1/1) ... [2020-09-25 14:37:40,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:40" (1/1) ... [2020-09-25 14:37:40,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:40" (1/1) ... [2020-09-25 14:37:40,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:40" (1/1) ... [2020-09-25 14:37:41,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:40" (1/1) ... [2020-09-25 14:37:41,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:40" (1/1) ... [2020-09-25 14:37:41,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:40" (1/1) ... [2020-09-25 14:37:41,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:37:41,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:37:41,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:37:41,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:37:41,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:37:41,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:37:41,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:37:41,159 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:37:41,159 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:37:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:37:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:37:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:37:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:37:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:37:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:37:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:37:42,481 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:37:42,481 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:37:42,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:37:42 BoogieIcfgContainer [2020-09-25 14:37:42,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:37:42,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:37:42,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:37:42,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:37:42,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:37:40" (1/3) ... [2020-09-25 14:37:42,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33478af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:37:42, skipping insertion in model container [2020-09-25 14:37:42,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:40" (2/3) ... [2020-09-25 14:37:42,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33478af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:37:42, skipping insertion in model container [2020-09-25 14:37:42,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:37:42" (3/3) ... [2020-09-25 14:37:42,501 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label46.c [2020-09-25 14:37:42,514 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:37:42,526 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:37:42,550 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:37:42,586 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:37:42,586 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:37:42,586 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:37:42,586 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:37:42,586 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:37:42,587 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:37:42,587 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:37:42,587 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:37:42,620 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 14:37:42,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 14:37:42,641 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:42,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:42,643 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:42,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:42,653 INFO L82 PathProgramCache]: Analyzing trace with hash -2063330177, now seen corresponding path program 1 times [2020-09-25 14:37:42,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:42,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036488076] [2020-09-25 14:37:42,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:43,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:43,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:43,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:44,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:47,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:47,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:47,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 14:37:47,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:37:47,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 14:37:47,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:47,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:47,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:37:47,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 14:37:47,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 14:37:47,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:37:48,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:48,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:48,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:48,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:48,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:48,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 14:37:48,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:48,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:48,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:48,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:48,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:37:48,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:37:48,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:48,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036488076] [2020-09-25 14:37:48,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:37:48,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:37:48,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631812392] [2020-09-25 14:37:48,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:37:48,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:48,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:37:48,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:37:48,381 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 14:37:50,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:50,559 INFO L93 Difference]: Finished difference Result 1270 states and 1669 transitions. [2020-09-25 14:37:50,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:37:50,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2020-09-25 14:37:50,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:50,589 INFO L225 Difference]: With dead ends: 1270 [2020-09-25 14:37:50,590 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 14:37:50,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:50,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 14:37:50,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 603. [2020-09-25 14:37:50,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 14:37:50,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 731 transitions. [2020-09-25 14:37:50,701 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 731 transitions. Word has length 140 [2020-09-25 14:37:50,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:50,702 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 731 transitions. [2020-09-25 14:37:50,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:37:50,703 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 731 transitions. [2020-09-25 14:37:50,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 14:37:50,711 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:50,711 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:50,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:37:50,712 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:50,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:50,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1805238925, now seen corresponding path program 1 times [2020-09-25 14:37:50,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:50,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142409740] [2020-09-25 14:37:50,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:50,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:50,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:50,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:51,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:51,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:52,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:52,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:55,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:55,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:55,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 14:37:55,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:37:55,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 14:37:55,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:55,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:55,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 14:37:55,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 14:37:55,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 14:37:55,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:56,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:56,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:56,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:56,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:56,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:56,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 14:37:56,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:56,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:56,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:56,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:37:56,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:56,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:56,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:56,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:56,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:56,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:37:56,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:37:56,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 14:37:56,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:56,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:56,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:37:56,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:56,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:37:56,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:56,887 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 14:37:56,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142409740] [2020-09-25 14:37:56,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:56,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 14:37:56,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077902673] [2020-09-25 14:37:56,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 14:37:56,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:56,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 14:37:56,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2020-09-25 14:37:56,891 INFO L87 Difference]: Start difference. First operand 603 states and 731 transitions. Second operand 20 states. [2020-09-25 14:37:58,301 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2020-09-25 14:37:58,535 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-09-25 14:37:58,831 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 90 [2020-09-25 14:37:59,220 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-09-25 14:37:59,514 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-09-25 14:37:59,800 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2020-09-25 14:38:00,093 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-09-25 14:38:00,505 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 88 [2020-09-25 14:38:00,897 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2020-09-25 14:38:01,782 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-09-25 14:38:02,593 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2020-09-25 14:38:02,880 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-09-25 14:38:03,475 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-09-25 14:38:03,771 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-09-25 14:38:04,438 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-09-25 14:38:05,046 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2020-09-25 14:38:05,487 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-09-25 14:38:06,080 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-09-25 14:38:06,674 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-25 14:38:07,315 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-09-25 14:38:08,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:08,349 INFO L93 Difference]: Finished difference Result 1970 states and 2592 transitions. [2020-09-25 14:38:08,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-09-25 14:38:08,350 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 162 [2020-09-25 14:38:08,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:08,364 INFO L225 Difference]: With dead ends: 1970 [2020-09-25 14:38:08,364 INFO L226 Difference]: Without dead ends: 1391 [2020-09-25 14:38:08,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1007, Invalid=2653, Unknown=0, NotChecked=0, Total=3660 [2020-09-25 14:38:08,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-09-25 14:38:08,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1280. [2020-09-25 14:38:08,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1280 states. [2020-09-25 14:38:08,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1534 transitions. [2020-09-25 14:38:08,446 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1534 transitions. Word has length 162 [2020-09-25 14:38:08,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:08,447 INFO L479 AbstractCegarLoop]: Abstraction has 1280 states and 1534 transitions. [2020-09-25 14:38:08,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 14:38:08,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1534 transitions. [2020-09-25 14:38:08,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 14:38:08,454 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:08,454 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:38:08,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:38:08,455 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:08,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:08,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1181282038, now seen corresponding path program 1 times [2020-09-25 14:38:08,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:08,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623118615] [2020-09-25 14:38:08,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:08,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:08,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:08,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:09,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:09,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:09,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:09,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:11,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:12,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:13,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:13,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 14:38:13,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:38:13,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 14:38:13,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:13,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:13,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:13,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 14:38:13,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 14:38:13,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:13,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:13,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:13,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:13,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:13,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:13,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:38:13,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:13,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:13,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:13,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:13,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:13,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:13,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:13,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:13,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:13,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:38:13,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:13,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 14:38:13,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:13,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:13,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:38:13,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:13,747 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 14:38:13,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623118615] [2020-09-25 14:38:13,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:13,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:38:13,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813539397] [2020-09-25 14:38:13,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:38:13,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:13,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:38:13,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:38:13,751 INFO L87 Difference]: Start difference. First operand 1280 states and 1534 transitions. Second operand 5 states. [2020-09-25 14:38:15,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:15,721 INFO L93 Difference]: Finished difference Result 2568 states and 3092 transitions. [2020-09-25 14:38:15,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:38:15,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-09-25 14:38:15,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:15,734 INFO L225 Difference]: With dead ends: 2568 [2020-09-25 14:38:15,735 INFO L226 Difference]: Without dead ends: 1312 [2020-09-25 14:38:15,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:38:15,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2020-09-25 14:38:15,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1115. [2020-09-25 14:38:15,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1115 states. [2020-09-25 14:38:15,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1276 transitions. [2020-09-25 14:38:15,789 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1276 transitions. Word has length 169 [2020-09-25 14:38:15,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:15,790 INFO L479 AbstractCegarLoop]: Abstraction has 1115 states and 1276 transitions. [2020-09-25 14:38:15,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:38:15,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1276 transitions. [2020-09-25 14:38:15,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-25 14:38:15,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:15,796 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:38:15,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:38:15,797 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:15,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:15,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1743351590, now seen corresponding path program 1 times [2020-09-25 14:38:15,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:15,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140197415] [2020-09-25 14:38:15,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:15,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:15,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:16,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:16,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:17,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:18,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:20,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:20,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:20,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:20,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 14:38:20,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:38:20,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 14:38:20,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:20,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:20,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 14:38:20,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-25 14:38:20,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 14:38:20,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:21,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:21,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:21,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:21,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:21,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:21,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:38:21,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:21,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:21,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:21,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:21,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:21,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:21,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:21,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:21,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:21,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 14:38:21,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:21,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 14:38:21,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:21,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:21,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:38:21,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:21,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 14:38:21,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:22,009 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:38:22,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140197415] [2020-09-25 14:38:22,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:22,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 14:38:22,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614384638] [2020-09-25 14:38:22,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 14:38:22,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:22,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 14:38:22,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2020-09-25 14:38:22,012 INFO L87 Difference]: Start difference. First operand 1115 states and 1276 transitions. Second operand 19 states. [2020-09-25 14:38:24,943 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2020-09-25 14:38:25,429 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2020-09-25 14:38:27,436 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2020-09-25 14:38:28,288 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2020-09-25 14:38:29,141 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2020-09-25 14:38:32,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:32,221 INFO L93 Difference]: Finished difference Result 3508 states and 4179 transitions. [2020-09-25 14:38:32,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 14:38:32,222 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 183 [2020-09-25 14:38:32,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:32,223 INFO L225 Difference]: With dead ends: 3508 [2020-09-25 14:38:32,223 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 14:38:32,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=336, Invalid=656, Unknown=0, NotChecked=0, Total=992 [2020-09-25 14:38:32,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 14:38:32,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 14:38:32,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 14:38:32,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 14:38:32,235 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 183 [2020-09-25 14:38:32,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:32,235 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 14:38:32,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 14:38:32,236 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 14:38:32,236 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 14:38:32,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:38:32,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.