/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=0.2 --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/Problem14_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:31:26,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:31:26,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:31:26,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:31:26,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:31:26,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:31:26,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:31:26,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:31:26,472 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:31:26,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:31:26,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:31:26,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:31:26,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:31:26,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:31:26,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:31:26,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:31:26,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:31:26,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:31:26,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:31:26,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:31:26,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:31:26,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:31:26,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:31:26,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:31:26,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:31:26,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:31:26,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:31:26,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:31:26,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:31:26,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:31:26,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:31:26,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:31:26,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:31:26,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:31:26,500 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:31:26,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:31:26,501 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:31:26,501 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:31:26,501 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:31:26,502 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:31:26,503 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:31:26,504 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 04:31:26,555 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:31:26,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:31:26,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:31:26,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:31:26,557 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:31:26,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:31:26,558 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:31:26,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:31:26,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:31:26,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:31:26,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:31:26,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:31:26,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:31:26,559 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:31:26,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:31:26,560 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:31:26,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:31:26,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:31:26,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:31:26,561 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:31:26,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:31:26,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:31:26,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:31:26,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:31:26,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:31:26,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:31:26,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:31:26,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:31:26,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:31:26,563 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 04:31:27,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:31:27,105 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:31:27,112 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:31:27,114 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:31:27,114 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:31:27,115 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label24.c [2020-09-25 04:31:27,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e97cb9199/4120632b49ce4cf286acc42a10eb3bd8/FLAGed1055c95 [2020-09-25 04:31:27,862 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:31:27,863 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label24.c [2020-09-25 04:31:27,877 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e97cb9199/4120632b49ce4cf286acc42a10eb3bd8/FLAGed1055c95 [2020-09-25 04:31:28,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e97cb9199/4120632b49ce4cf286acc42a10eb3bd8 [2020-09-25 04:31:28,076 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:31:28,082 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:31:28,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:31:28,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:31:28,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:31:28,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:31:28" (1/1) ... [2020-09-25 04:31:28,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283e1fb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:28, skipping insertion in model container [2020-09-25 04:31:28,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:31:28" (1/1) ... [2020-09-25 04:31:28,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:31:28,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:31:28,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:31:28,816 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:31:29,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:31:29,131 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:31:29,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:29 WrapperNode [2020-09-25 04:31:29,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:31:29,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:31:29,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:31:29,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:31:29,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:29" (1/1) ... [2020-09-25 04:31:29,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:29" (1/1) ... [2020-09-25 04:31:29,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:29" (1/1) ... [2020-09-25 04:31:29,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:29" (1/1) ... [2020-09-25 04:31:29,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:29" (1/1) ... [2020-09-25 04:31:29,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:29" (1/1) ... [2020-09-25 04:31:29,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:29" (1/1) ... [2020-09-25 04:31:29,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:31:29,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:31:29,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:31:29,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:31:29,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:29" (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 04:31:29,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:31:29,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:31:29,377 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:31:29,377 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:31:29,377 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:31:29,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:31:29,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:31:29,379 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:31:29,379 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:31:29,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:31:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:31:31,311 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:31:31,312 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:31:31,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:31:31 BoogieIcfgContainer [2020-09-25 04:31:31,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:31:31,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:31:31,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:31:31,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:31:31,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:31:28" (1/3) ... [2020-09-25 04:31:31,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534e6760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:31:31, skipping insertion in model container [2020-09-25 04:31:31,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:29" (2/3) ... [2020-09-25 04:31:31,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534e6760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:31:31, skipping insertion in model container [2020-09-25 04:31:31,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:31:31" (3/3) ... [2020-09-25 04:31:31,333 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label24.c [2020-09-25 04:31:31,346 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:31:31,358 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:31:31,383 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:31:31,428 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:31:31,430 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:31:31,430 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:31:31,430 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:31:31,431 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:31:31,431 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:31:31,431 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:31:31,431 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:31:31,478 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 04:31:31,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 04:31:31,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:31,495 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 04:31:31,496 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:31,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:31,505 INFO L82 PathProgramCache]: Analyzing trace with hash -444760420, now seen corresponding path program 1 times [2020-09-25 04:31:31,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:31,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715861378] [2020-09-25 04:31:31,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:31,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:32,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:32,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:32,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:32,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 04:31:32,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:31:32,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 616 [2020-09-25 04:31:32,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:32,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:31:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 04:31:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 04:31:32,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:31:32,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:32,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:32,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:32,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:32,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:32,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 04:31:32,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:32,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:32,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:32,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:32,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:31:32,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:32,577 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 04:31:32,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715861378] [2020-09-25 04:31:32,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:31:32,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:31:32,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79251088] [2020-09-25 04:31:32,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:31:32,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:32,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:31:32,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:31:32,617 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 04:31:35,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:35,638 INFO L93 Difference]: Finished difference Result 1656 states and 2196 transitions. [2020-09-25 04:31:35,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:31:35,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-25 04:31:35,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:35,678 INFO L225 Difference]: With dead ends: 1656 [2020-09-25 04:31:35,678 INFO L226 Difference]: Without dead ends: 920 [2020-09-25 04:31:35,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 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 04:31:35,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-25 04:31:35,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 806. [2020-09-25 04:31:35,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 04:31:35,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 969 transitions. [2020-09-25 04:31:35,812 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 969 transitions. Word has length 60 [2020-09-25 04:31:35,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:35,813 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 969 transitions. [2020-09-25 04:31:35,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:31:35,813 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 969 transitions. [2020-09-25 04:31:35,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 04:31:35,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:35,821 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] [2020-09-25 04:31:35,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:31:35,822 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:35,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:35,822 INFO L82 PathProgramCache]: Analyzing trace with hash -681557324, now seen corresponding path program 1 times [2020-09-25 04:31:35,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:35,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271651989] [2020-09-25 04:31:35,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:35,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:36,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:36,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:36,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:37,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:37,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:39,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:39,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 04:31:39,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:31:39,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3588 [2020-09-25 04:31:39,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:39,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:39,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:39,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 04:31:39,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 04:31:39,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:39,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:39,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:39,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:39,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:39,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:39,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:31:39,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:39,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:39,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:39,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:39,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:39,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:39,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:39,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:39,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:39,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:31:39,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:39,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 04:31:39,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:39,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 04:31:39,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:39,735 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 04:31:39,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271651989] [2020-09-25 04:31:39,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:39,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:39,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638259681] [2020-09-25 04:31:39,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:39,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:39,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:39,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:39,740 INFO L87 Difference]: Start difference. First operand 806 states and 969 transitions. Second operand 5 states. [2020-09-25 04:31:42,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:42,460 INFO L93 Difference]: Finished difference Result 2007 states and 2506 transitions. [2020-09-25 04:31:42,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:42,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 04:31:42,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:42,469 INFO L225 Difference]: With dead ends: 2007 [2020-09-25 04:31:42,469 INFO L226 Difference]: Without dead ends: 1216 [2020-09-25 04:31:42,472 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 04:31:42,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2020-09-25 04:31:42,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1202. [2020-09-25 04:31:42,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1202 states. [2020-09-25 04:31:42,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1425 transitions. [2020-09-25 04:31:42,504 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1425 transitions. Word has length 139 [2020-09-25 04:31:42,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:42,505 INFO L479 AbstractCegarLoop]: Abstraction has 1202 states and 1425 transitions. [2020-09-25 04:31:42,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:42,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1425 transitions. [2020-09-25 04:31:42,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-25 04:31:42,510 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:42,510 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, 1, 1, 1] [2020-09-25 04:31:42,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:31:42,511 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:42,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:42,511 INFO L82 PathProgramCache]: Analyzing trace with hash 188553467, now seen corresponding path program 1 times [2020-09-25 04:31:42,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:42,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702152577] [2020-09-25 04:31:42,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:42,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:43,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:43,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:43,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:44,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:46,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:46,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:47,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:47,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-25 04:31:47,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:31:47,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4726 [2020-09-25 04:31:47,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:47,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:47,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:47,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-09-25 04:31:47,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 04:31:47,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:47,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:47,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:47,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:47,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:47,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:47,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:31:47,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:47,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:47,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:47,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:47,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:47,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:47,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:47,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:47,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:47,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 04:31:47,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:47,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-25 04:31:47,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:47,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:47,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:47,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:47,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 04:31:47,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:47,771 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 04:31:47,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702152577] [2020-09-25 04:31:47,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:47,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:31:47,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603866959] [2020-09-25 04:31:47,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:31:47,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:47,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:31:47,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:47,774 INFO L87 Difference]: Start difference. First operand 1202 states and 1425 transitions. Second operand 6 states. [2020-09-25 04:31:51,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:51,476 INFO L93 Difference]: Finished difference Result 3000 states and 3782 transitions. [2020-09-25 04:31:51,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:31:51,476 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 209 [2020-09-25 04:31:51,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:51,490 INFO L225 Difference]: With dead ends: 3000 [2020-09-25 04:31:51,490 INFO L226 Difference]: Without dead ends: 2002 [2020-09-25 04:31:51,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 04:31:51,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2020-09-25 04:31:51,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1966. [2020-09-25 04:31:51,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-09-25 04:31:51,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 2446 transitions. [2020-09-25 04:31:51,568 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 2446 transitions. Word has length 209 [2020-09-25 04:31:51,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:51,571 INFO L479 AbstractCegarLoop]: Abstraction has 1966 states and 2446 transitions. [2020-09-25 04:31:51,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:31:51,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 2446 transitions. [2020-09-25 04:31:51,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-09-25 04:31:51,580 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:51,580 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] [2020-09-25 04:31:51,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:31:51,580 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:51,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:51,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1811434454, now seen corresponding path program 1 times [2020-09-25 04:31:51,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:51,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693141128] [2020-09-25 04:31:51,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:51,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:51,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:51,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:52,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:53,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:53,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:54,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:54,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:55,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:56,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:56,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-09-25 04:31:56,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:31:56,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 04:31:56,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:56,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:56,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:56,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 04:31:56,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 04:31:56,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:56,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:56,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:56,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:56,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:56,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:56,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:31:56,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:56,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:56,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:56,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:56,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:56,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:56,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:56,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:56,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:56,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:31:56,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:56,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 04:31:56,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:56,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:56,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:56,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:56,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 04:31:56,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:31:56,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 04:31:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:56,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:57,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:57,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 04:31:57,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:57,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 04:31:57,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:57,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:57,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:57,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:31:57,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 04:31:57,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:57,341 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 04:31:57,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693141128] [2020-09-25 04:31:57,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:57,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:31:57,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286403365] [2020-09-25 04:31:57,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:31:57,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:57,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:31:57,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:31:57,346 INFO L87 Difference]: Start difference. First operand 1966 states and 2446 transitions. Second operand 7 states. [2020-09-25 04:32:00,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:32:00,972 INFO L93 Difference]: Finished difference Result 4093 states and 5268 transitions. [2020-09-25 04:32:00,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:32:00,972 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2020-09-25 04:32:00,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:32:00,988 INFO L225 Difference]: With dead ends: 4093 [2020-09-25 04:32:00,988 INFO L226 Difference]: Without dead ends: 2331 [2020-09-25 04:32:01,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:32:01,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2331 states. [2020-09-25 04:32:01,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2331 to 2215. [2020-09-25 04:32:01,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2215 states. [2020-09-25 04:32:01,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 2754 transitions. [2020-09-25 04:32:01,102 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 2754 transitions. Word has length 233 [2020-09-25 04:32:01,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:32:01,104 INFO L479 AbstractCegarLoop]: Abstraction has 2215 states and 2754 transitions. [2020-09-25 04:32:01,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:32:01,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 2754 transitions. [2020-09-25 04:32:01,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-25 04:32:01,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:32:01,118 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, 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 04:32:01,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:32:01,118 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:32:01,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:32:01,119 INFO L82 PathProgramCache]: Analyzing trace with hash -510942541, now seen corresponding path program 1 times [2020-09-25 04:32:01,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:32:01,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752089504] [2020-09-25 04:32:01,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:32:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:01,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:01,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:01,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:01,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:02,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:03,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:04,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:05,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:05,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:06,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:06,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-09-25 04:32:06,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:32:06,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 04:32:06,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:06,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:06,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:32:06,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-25 04:32:06,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 04:32:06,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:32:06,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:32:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:06,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:06,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:06,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:32:06,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:06,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:32:06,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:06,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:06,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:32:06,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:06,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:32:06,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:06,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:32:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:06,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:06,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:06,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 04:32:06,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:06,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 04:32:06,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:06,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:06,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:32:06,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:06,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 04:32:06,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:06,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-25 04:32:06,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:06,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:06,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:06,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 04:32:06,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:06,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 04:32:06,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:06,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:06,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:32:06,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:32:06,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 04:32:06,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:06,895 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:32:06,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752089504] [2020-09-25 04:32:06,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:32:06,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 04:32:06,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79602112] [2020-09-25 04:32:06,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:32:06,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:32:06,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:32:06,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:32:06,898 INFO L87 Difference]: Start difference. First operand 2215 states and 2754 transitions. Second operand 9 states. [2020-09-25 04:32:12,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:32:12,176 INFO L93 Difference]: Finished difference Result 5538 states and 7143 transitions. [2020-09-25 04:32:12,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 04:32:12,177 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 242 [2020-09-25 04:32:12,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:32:12,200 INFO L225 Difference]: With dead ends: 5538 [2020-09-25 04:32:12,200 INFO L226 Difference]: Without dead ends: 3527 [2020-09-25 04:32:12,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-09-25 04:32:12,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3527 states. [2020-09-25 04:32:12,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3527 to 3314. [2020-09-25 04:32:12,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3314 states. [2020-09-25 04:32:12,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3314 states to 3314 states and 4047 transitions. [2020-09-25 04:32:12,318 INFO L78 Accepts]: Start accepts. Automaton has 3314 states and 4047 transitions. Word has length 242 [2020-09-25 04:32:12,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:32:12,318 INFO L479 AbstractCegarLoop]: Abstraction has 3314 states and 4047 transitions. [2020-09-25 04:32:12,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:32:12,319 INFO L276 IsEmpty]: Start isEmpty. Operand 3314 states and 4047 transitions. [2020-09-25 04:32:12,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-09-25 04:32:12,325 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:32:12,326 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, 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] [2020-09-25 04:32:12,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:32:12,326 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:32:12,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:32:12,327 INFO L82 PathProgramCache]: Analyzing trace with hash -344198728, now seen corresponding path program 1 times [2020-09-25 04:32:12,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:32:12,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485994767] [2020-09-25 04:32:12,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:32:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:12,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:12,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:12,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:12,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:13,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:13,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking...