/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem10_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:39:28,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:39:28,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:39:28,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:39:28,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:39:28,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:39:28,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:39:28,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:39:28,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:39:28,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:39:28,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:39:28,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:39:28,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:39:28,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:39:28,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:39:28,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:39:28,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:39:28,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:39:28,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:39:28,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:39:28,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:39:28,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:39:28,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:39:28,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:39:28,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:39:28,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:39:28,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:39:28,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:39:28,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:39:28,480 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:39:28,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:39:28,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:39:28,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:39:28,483 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:39:28,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:39:28,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:39:28,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:39:28,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:39:28,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:39:28,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:39:28,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:39:28,489 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 05:39:28,526 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:39:28,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:39:28,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:39:28,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:39:28,528 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:39:28,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:39:28,529 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:39:28,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:39:28,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:39:28,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:39:28,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:39:28,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:39:28,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:39:28,530 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:39:28,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:39:28,530 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:39:28,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:39:28,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:39:28,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:39:28,531 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:39:28,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:39:28,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:39:28,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:39:28,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:39:28,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:39:28,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:39:28,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:39:28,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:39:28,533 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:39:28,533 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:39:29,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:39:29,041 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:39:29,045 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:39:29,047 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:39:29,048 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:39:29,049 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label52.c [2020-09-25 05:39:29,134 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bffff762/dbe37e80eabb460ab71c7fd732556a9a/FLAGa897ef718 [2020-09-25 05:39:29,816 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:39:29,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label52.c [2020-09-25 05:39:29,840 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bffff762/dbe37e80eabb460ab71c7fd732556a9a/FLAGa897ef718 [2020-09-25 05:39:30,091 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bffff762/dbe37e80eabb460ab71c7fd732556a9a [2020-09-25 05:39:30,107 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:39:30,114 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:39:30,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:39:30,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:39:30,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:39:30,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:39:30" (1/1) ... [2020-09-25 05:39:30,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@488fa6c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:30, skipping insertion in model container [2020-09-25 05:39:30,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:39:30" (1/1) ... [2020-09-25 05:39:30,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:39:30,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:39:30,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:39:30,836 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:39:30,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:39:31,009 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:39:31,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:31 WrapperNode [2020-09-25 05:39:31,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:39:31,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:39:31,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:39:31,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:39:31,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:31" (1/1) ... [2020-09-25 05:39:31,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:31" (1/1) ... [2020-09-25 05:39:31,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:31" (1/1) ... [2020-09-25 05:39:31,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:31" (1/1) ... [2020-09-25 05:39:31,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:31" (1/1) ... [2020-09-25 05:39:31,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:31" (1/1) ... [2020-09-25 05:39:31,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:31" (1/1) ... [2020-09-25 05:39:31,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:39:31,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:39:31,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:39:31,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:39:31,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:31" (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 05:39:31,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:39:31,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:39:31,276 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:39:31,276 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:39:31,277 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:39:31,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:39:31,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:39:31,279 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:39:31,280 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:39:31,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:39:31,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:39:33,089 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:39:33,090 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:39:33,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:33 BoogieIcfgContainer [2020-09-25 05:39:33,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:39:33,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:39:33,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:39:33,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:39:33,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:39:30" (1/3) ... [2020-09-25 05:39:33,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b399239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:33, skipping insertion in model container [2020-09-25 05:39:33,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:31" (2/3) ... [2020-09-25 05:39:33,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b399239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:33, skipping insertion in model container [2020-09-25 05:39:33,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:33" (3/3) ... [2020-09-25 05:39:33,109 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label52.c [2020-09-25 05:39:33,121 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:39:33,133 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:39:33,156 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:39:33,192 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:39:33,192 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:39:33,193 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:39:33,193 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:39:33,193 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:39:33,193 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:39:33,193 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:39:33,194 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:39:33,228 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 05:39:33,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 05:39:33,239 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:33,240 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] [2020-09-25 05:39:33,241 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:33,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:33,250 INFO L82 PathProgramCache]: Analyzing trace with hash 963589103, now seen corresponding path program 1 times [2020-09-25 05:39:33,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:33,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027335576] [2020-09-25 05:39:33,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:33,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:33,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:34,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:34,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 05:39:34,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:39:34,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 664 [2020-09-25 05:39:34,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:34,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:34,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:39:34,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:39:34,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 05:39:34,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:39:34,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:34,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:34,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:34,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:34,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:34,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:39:34,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:34,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:34,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:39:34,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:34,373 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 05:39:34,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027335576] [2020-09-25 05:39:34,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:39:34,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:39:34,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149900704] [2020-09-25 05:39:34,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:39:34,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:34,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:39:34,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:39:34,408 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 05:39:36,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:36,590 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 05:39:36,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:39:36,593 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-25 05:39:36,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:36,632 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 05:39:36,632 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 05:39:36,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:36,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 05:39:36,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 05:39:36,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 05:39:36,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 05:39:36,750 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 60 [2020-09-25 05:39:36,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:36,751 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 05:39:36,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:39:36,751 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 05:39:36,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 05:39:36,759 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:36,760 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:36,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:39:36,760 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:36,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:36,761 INFO L82 PathProgramCache]: Analyzing trace with hash 495482008, now seen corresponding path program 1 times [2020-09-25 05:39:36,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:36,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094994465] [2020-09-25 05:39:36,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:36,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:37,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:37,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:37,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:38,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:38,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:38,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 05:39:38,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:39:38,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1861 [2020-09-25 05:39:38,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:38,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:38,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:38,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 05:39:38,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 05:39:38,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:38,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:38,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:38,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:38,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:38,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:38,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:39:38,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:38,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:38,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:38,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:38,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:38,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:38,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:38,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:38,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:38,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 05:39:38,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:38,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 05:39:38,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:38,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:38,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:38,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:38,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 05:39:38,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:38,975 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:38,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094994465] [2020-09-25 05:39:38,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:38,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:38,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718724643] [2020-09-25 05:39:38,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:38,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:38,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:38,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:38,979 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 5 states. [2020-09-25 05:39:40,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:40,741 INFO L93 Difference]: Finished difference Result 1387 states and 1793 transitions. [2020-09-25 05:39:40,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:39:40,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-09-25 05:39:40,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:40,749 INFO L225 Difference]: With dead ends: 1387 [2020-09-25 05:39:40,750 INFO L226 Difference]: Without dead ends: 859 [2020-09-25 05:39:40,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:39:40,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-25 05:39:40,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 847. [2020-09-25 05:39:40,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-09-25 05:39:40,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1051 transitions. [2020-09-25 05:39:40,802 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1051 transitions. Word has length 140 [2020-09-25 05:39:40,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:40,804 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1051 transitions. [2020-09-25 05:39:40,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:40,804 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1051 transitions. [2020-09-25 05:39:40,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-25 05:39:40,814 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:40,814 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:40,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:39:40,815 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:40,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:40,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1229481446, now seen corresponding path program 1 times [2020-09-25 05:39:40,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:40,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925438678] [2020-09-25 05:39:40,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:40,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:41,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:42,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:43,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:45,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:45,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:45,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:45,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:45,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-25 05:39:45,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:39:45,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-09-25 05:39:45,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:45,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:45,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:39:45,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-09-25 05:39:45,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 05:39:45,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:46,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:46,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:46,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:46,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:46,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:46,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:39:46,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:46,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:46,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:46,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:46,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:46,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:46,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:46,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:46,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:46,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 05:39:46,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:46,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-25 05:39:46,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:46,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:46,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:39:46,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 05:39:46,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:46,548 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:46,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925438678] [2020-09-25 05:39:46,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:46,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:39:46,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925338487] [2020-09-25 05:39:46,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:39:46,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:46,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:39:46,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:39:46,553 INFO L87 Difference]: Start difference. First operand 847 states and 1051 transitions. Second operand 6 states. [2020-09-25 05:39:49,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:49,297 INFO L93 Difference]: Finished difference Result 2807 states and 3667 transitions. [2020-09-25 05:39:49,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:39:49,299 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 206 [2020-09-25 05:39:49,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:49,319 INFO L225 Difference]: With dead ends: 2807 [2020-09-25 05:39:49,319 INFO L226 Difference]: Without dead ends: 1975 [2020-09-25 05:39:49,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:39:49,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2020-09-25 05:39:49,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1916. [2020-09-25 05:39:49,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2020-09-25 05:39:49,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2398 transitions. [2020-09-25 05:39:49,413 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2398 transitions. Word has length 206 [2020-09-25 05:39:49,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:49,419 INFO L479 AbstractCegarLoop]: Abstraction has 1916 states and 2398 transitions. [2020-09-25 05:39:49,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:39:49,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2398 transitions. [2020-09-25 05:39:49,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-25 05:39:49,429 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:49,429 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:39:49,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:39:49,430 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:49,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:49,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1270686682, now seen corresponding path program 1 times [2020-09-25 05:39:49,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:49,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655291659] [2020-09-25 05:39:49,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:49,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:49,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:49,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:50,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:51,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:52,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:52,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:53,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:54,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:54,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:54,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-09-25 05:39:54,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:39:54,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-09-25 05:39:54,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:54,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:54,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:54,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 05:39:54,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 05:39:54,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:54,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:54,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:54,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:54,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:54,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:54,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:39:54,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:54,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:54,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:54,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:54,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:54,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:54,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:54,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:54,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:54,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:39:54,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:54,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 05:39:54,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:54,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:54,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:54,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:54,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 05:39:54,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:54,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 05:39:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:54,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:55,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:55,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 05:39:55,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:55,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 05:39:55,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:55,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:55,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:55,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:39:55,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 05:39:55,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:55,199 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:39:55,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655291659] [2020-09-25 05:39:55,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:55,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:39:55,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176097696] [2020-09-25 05:39:55,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:39:55,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:55,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:39:55,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:39:55,205 INFO L87 Difference]: Start difference. First operand 1916 states and 2398 transitions. Second operand 7 states. [2020-09-25 05:39:57,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:57,578 INFO L93 Difference]: Finished difference Result 4503 states and 5833 transitions. [2020-09-25 05:39:57,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:39:57,580 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-09-25 05:39:57,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:57,593 INFO L225 Difference]: With dead ends: 4503 [2020-09-25 05:39:57,593 INFO L226 Difference]: Without dead ends: 2130 [2020-09-25 05:39:57,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:39:57,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2130 states. [2020-09-25 05:39:57,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2130 to 1920. [2020-09-25 05:39:57,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2020-09-25 05:39:57,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2350 transitions. [2020-09-25 05:39:57,661 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2350 transitions. Word has length 232 [2020-09-25 05:39:57,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:57,661 INFO L479 AbstractCegarLoop]: Abstraction has 1920 states and 2350 transitions. [2020-09-25 05:39:57,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:39:57,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2350 transitions. [2020-09-25 05:39:57,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-09-25 05:39:57,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:57,667 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:39:57,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:39:57,668 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:57,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:57,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1568000594, now seen corresponding path program 1 times [2020-09-25 05:39:57,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:57,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24537822] [2020-09-25 05:39:57,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:57,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:57,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:58,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:58,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:59,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:00,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:02,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:02,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-09-25 05:40:02,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:40:02,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 05:40:02,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:02,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:02,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:40:02,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:40:02,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-09-25 05:40:02,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:02,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:02,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:02,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:02,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:02,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:02,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 05:40:02,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:02,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:02,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:40:02,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:02,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:40:02,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:02,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:02,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:03,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:03,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:03,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 05:40:03,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:40:03,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-25 05:40:03,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:03,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:03,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:03,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:03,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 05:40:03,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:03,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-25 05:40:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:03,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:03,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:03,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:03,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 05:40:03,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:40:03,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-09-25 05:40:03,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:03,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:03,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:40:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:40:03,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:03,826 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 05:40:03,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24537822] [2020-09-25 05:40:03,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:03,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 05:40:03,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274798783] [2020-09-25 05:40:03,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 05:40:03,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:03,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 05:40:03,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:40:03,830 INFO L87 Difference]: Start difference. First operand 1920 states and 2350 transitions. Second operand 10 states. [2020-09-25 05:40:07,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:07,483 INFO L93 Difference]: Finished difference Result 4789 states and 6005 transitions. [2020-09-25 05:40:07,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:40:07,489 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 234 [2020-09-25 05:40:07,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:07,504 INFO L225 Difference]: With dead ends: 4789 [2020-09-25 05:40:07,505 INFO L226 Difference]: Without dead ends: 2865 [2020-09-25 05:40:07,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 05:40:07,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2020-09-25 05:40:07,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2683. [2020-09-25 05:40:07,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2683 states. [2020-09-25 05:40:07,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2683 states to 2683 states and 3261 transitions. [2020-09-25 05:40:07,593 INFO L78 Accepts]: Start accepts. Automaton has 2683 states and 3261 transitions. Word has length 234 [2020-09-25 05:40:07,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:07,593 INFO L479 AbstractCegarLoop]: Abstraction has 2683 states and 3261 transitions. [2020-09-25 05:40:07,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 05:40:07,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2683 states and 3261 transitions. [2020-09-25 05:40:07,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-09-25 05:40:07,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:07,600 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:40:07,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:40:07,601 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:07,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:07,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1330315263, now seen corresponding path program 1 times [2020-09-25 05:40:07,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:07,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304436921] [2020-09-25 05:40:07,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:07,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:07,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:08,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:08,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:12,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:12,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:12,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:12,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-09-25 05:40:12,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:40:12,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5132 [2020-09-25 05:40:12,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:12,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:12,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:40:12,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 05:40:12,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 05:40:12,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:12,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:12,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:12,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:12,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:12,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:12,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:40:12,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:12,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:12,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:12,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:12,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:12,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:12,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:13,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:13,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:13,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:40:13,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:13,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 05:40:13,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:13,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:13,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:40:13,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:13,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 05:40:13,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:13,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 05:40:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:13,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:13,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:13,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 05:40:13,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:13,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-25 05:40:13,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:13,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:13,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:13,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:40:13,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 05:40:13,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:13,566 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:40:13,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304436921] [2020-09-25 05:40:13,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:13,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:40:13,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032770177] [2020-09-25 05:40:13,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:40:13,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:13,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:40:13,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:40:13,569 INFO L87 Difference]: Start difference. First operand 2683 states and 3261 transitions. Second operand 8 states.