/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/Problem01_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:24:45,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:24:45,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:24:45,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:24:45,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:24:45,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:24:45,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:24:45,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:24:45,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:24:45,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:24:45,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:24:45,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:24:45,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:24:45,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:24:45,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:24:45,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:24:45,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:24:45,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:24:45,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:24:45,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:24:45,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:24:45,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:24:45,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:24:45,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:24:45,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:24:45,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:24:45,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:24:45,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:24:45,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:24:45,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:24:45,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:24:45,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:24:45,347 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:24:45,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:24:45,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:24:45,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:24:45,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:24:45,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:24:45,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:24:45,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:24:45,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:24:45,354 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 04:24:45,382 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:24:45,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:24:45,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:24:45,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:24:45,384 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:24:45,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:24:45,385 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:24:45,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:24:45,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:24:45,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:24:45,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:24:45,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:24:45,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:24:45,386 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:24:45,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:24:45,387 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:24:45,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:24:45,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:24:45,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:24:45,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:24:45,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:24:45,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:24:45,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:24:45,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:24:45,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:24:45,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:24:45,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:24:45,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:24:45,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:24:45,390 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 04:24:45,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:24:45,871 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:24:45,876 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:24:45,878 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:24:45,880 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:24:45,882 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-09-25 04:24:45,978 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4498e7e9/7b77b66ce3be44a4afd0d4990fa96e65/FLAGcdaf10d7f [2020-09-25 04:24:46,648 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:24:46,649 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-09-25 04:24:46,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4498e7e9/7b77b66ce3be44a4afd0d4990fa96e65/FLAGcdaf10d7f [2020-09-25 04:24:46,865 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4498e7e9/7b77b66ce3be44a4afd0d4990fa96e65 [2020-09-25 04:24:46,880 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:24:46,887 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:24:46,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:24:46,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:24:46,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:24:46,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:24:46" (1/1) ... [2020-09-25 04:24:46,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ba245a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:46, skipping insertion in model container [2020-09-25 04:24:46,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:24:46" (1/1) ... [2020-09-25 04:24:46,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:24:46,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:24:47,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:24:47,458 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:24:47,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:24:47,696 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:24:47,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:47 WrapperNode [2020-09-25 04:24:47,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:24:47,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:24:47,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:24:47,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:24:47,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:47" (1/1) ... [2020-09-25 04:24:47,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:47" (1/1) ... [2020-09-25 04:24:47,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:47" (1/1) ... [2020-09-25 04:24:47,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:47" (1/1) ... [2020-09-25 04:24:47,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:47" (1/1) ... [2020-09-25 04:24:47,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:47" (1/1) ... [2020-09-25 04:24:47,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:47" (1/1) ... [2020-09-25 04:24:47,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:24:47,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:24:47,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:24:47,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:24:47,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:47" (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 04:24:47,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:24:47,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:24:47,908 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:24:47,909 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:24:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:24:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:24:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:24:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:24:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:24:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:24:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:24:49,297 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:24:49,298 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:24:49,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:24:49 BoogieIcfgContainer [2020-09-25 04:24:49,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:24:49,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:24:49,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:24:49,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:24:49,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:24:46" (1/3) ... [2020-09-25 04:24:49,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f891f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:24:49, skipping insertion in model container [2020-09-25 04:24:49,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:47" (2/3) ... [2020-09-25 04:24:49,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f891f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:24:49, skipping insertion in model container [2020-09-25 04:24:49,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:24:49" (3/3) ... [2020-09-25 04:24:49,318 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label08.c [2020-09-25 04:24:49,330 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:24:49,342 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:24:49,365 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:24:49,403 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:24:49,404 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:24:49,404 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:24:49,404 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:24:49,404 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:24:49,404 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:24:49,404 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:24:49,405 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:24:49,442 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 04:24:49,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 04:24:49,464 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:49,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:49,467 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:49,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:49,477 INFO L82 PathProgramCache]: Analyzing trace with hash 461278893, now seen corresponding path program 1 times [2020-09-25 04:24:49,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:49,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469248235] [2020-09-25 04:24:49,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:49,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:50,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:50,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:50,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:50,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:50,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:51,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:51,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:53,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:53,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:54,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:54,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 04:24:54,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:24:54,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 04:24:54,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:54,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:54,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:24:54,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:24:54,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 04:24:54,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:24:55,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:55,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:55,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:55,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:24:55,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:55,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 04:24:55,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:55,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:55,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:24:55,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:55,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:24:55,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:55,189 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 04:24:55,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469248235] [2020-09-25 04:24:55,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:55,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:24:55,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259848303] [2020-09-25 04:24:55,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:24:55,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:55,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:24:55,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:24:55,225 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 04:24:57,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:57,487 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 04:24:57,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:24:57,489 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2020-09-25 04:24:57,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:57,526 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 04:24:57,526 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 04:24:57,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:24:57,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 04:24:57,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 04:24:57,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 04:24:57,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 04:24:57,651 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 141 [2020-09-25 04:24:57,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:57,652 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 04:24:57,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:24:57,653 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 04:24:57,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 04:24:57,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:57,660 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:57,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:24:57,661 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:57,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:57,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1572128645, now seen corresponding path program 1 times [2020-09-25 04:24:57,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:57,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088015101] [2020-09-25 04:24:57,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:57,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:57,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:58,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:00,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:01,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:02,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:02,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:02,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 04:25:02,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:25:02,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 04:25:02,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:02,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:02,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:25:02,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:25:02,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 04:25:02,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:02,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:02,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:02,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:02,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:02,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:02,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 04:25:02,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:02,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:02,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:02,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:02,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:25:02,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:02,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:02,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:02,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:02,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:25:02,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:02,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 04:25:02,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:02,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:02,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:02,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:02,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:25:02,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:25:03,058 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:25:03,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088015101] [2020-09-25 04:25:03,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:25:03,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:25:03,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286280760] [2020-09-25 04:25:03,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:25:03,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:03,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:25:03,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:25:03,063 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 04:25:05,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:05,572 INFO L93 Difference]: Finished difference Result 1538 states and 1910 transitions. [2020-09-25 04:25:05,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:25:05,573 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2020-09-25 04:25:05,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:05,581 INFO L225 Difference]: With dead ends: 1538 [2020-09-25 04:25:05,581 INFO L226 Difference]: Without dead ends: 959 [2020-09-25 04:25:05,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:25:05,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-09-25 04:25:05,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 901. [2020-09-25 04:25:05,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-09-25 04:25:05,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1108 transitions. [2020-09-25 04:25:05,660 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1108 transitions. Word has length 162 [2020-09-25 04:25:05,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:05,660 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1108 transitions. [2020-09-25 04:25:05,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:25:05,662 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1108 transitions. [2020-09-25 04:25:05,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 04:25:05,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:05,667 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:25:05,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:25:05,668 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:05,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:05,668 INFO L82 PathProgramCache]: Analyzing trace with hash 127836767, now seen corresponding path program 1 times [2020-09-25 04:25:05,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:05,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720924431] [2020-09-25 04:25:05,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:05,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:05,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:06,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:06,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:07,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:07,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:10,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:10,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:10,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 04:25:10,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:25:10,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 04:25:10,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:10,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:10,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:25:10,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:25:10,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:25:10,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:10,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:10,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:10,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:10,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:10,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:10,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 04:25:10,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:10,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:10,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:10,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:10,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:25:10,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:10,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:10,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:10,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:10,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:25:10,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:10,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 04:25:10,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:10,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:10,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:10,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:10,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 04:25:10,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:11,008 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:25:11,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720924431] [2020-09-25 04:25:11,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:25:11,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:25:11,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575015506] [2020-09-25 04:25:11,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:25:11,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:11,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:25:11,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:25:11,015 INFO L87 Difference]: Start difference. First operand 901 states and 1108 transitions. Second operand 8 states. [2020-09-25 04:25:14,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:14,042 INFO L93 Difference]: Finished difference Result 2951 states and 3851 transitions. [2020-09-25 04:25:14,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:25:14,043 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 163 [2020-09-25 04:25:14,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:14,056 INFO L225 Difference]: With dead ends: 2951 [2020-09-25 04:25:14,056 INFO L226 Difference]: Without dead ends: 2074 [2020-09-25 04:25:14,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:25:14,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2020-09-25 04:25:14,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 1981. [2020-09-25 04:25:14,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2020-09-25 04:25:14,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 2506 transitions. [2020-09-25 04:25:14,132 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 2506 transitions. Word has length 163 [2020-09-25 04:25:14,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:14,133 INFO L479 AbstractCegarLoop]: Abstraction has 1981 states and 2506 transitions. [2020-09-25 04:25:14,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:25:14,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 2506 transitions. [2020-09-25 04:25:14,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 04:25:14,143 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:14,144 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:14,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:25:14,144 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:14,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:14,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1373458601, now seen corresponding path program 1 times [2020-09-25 04:25:14,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:14,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177879318] [2020-09-25 04:25:14,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:14,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:14,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:14,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:15,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:15,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:18,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:18,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:19,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:19,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 04:25:19,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:25:19,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 04:25:19,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:19,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:19,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:19,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:25:19,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 04:25:19,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:25:19,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:19,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:19,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:19,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:19,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:19,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:25:19,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:19,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:19,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:19,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:19,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:19,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:19,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:19,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:19,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:25:19,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:19,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 04:25:19,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:19,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:19,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:19,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:19,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:25:19,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:19,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:25:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:19,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:19,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:19,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:19,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:19,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 04:25:19,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:19,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:19,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:19,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:19,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:25:19,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:19,517 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:25:19,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177879318] [2020-09-25 04:25:19,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:19,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:25:19,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121883282] [2020-09-25 04:25:19,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:25:19,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:19,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:25:19,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:25:19,523 INFO L87 Difference]: Start difference. First operand 1981 states and 2506 transitions. Second operand 7 states. [2020-09-25 04:25:21,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:21,519 INFO L93 Difference]: Finished difference Result 4378 states and 5692 transitions. [2020-09-25 04:25:21,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:25:21,519 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-09-25 04:25:21,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:21,542 INFO L225 Difference]: With dead ends: 4378 [2020-09-25 04:25:21,543 INFO L226 Difference]: Without dead ends: 2421 [2020-09-25 04:25:21,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 04:25:21,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2020-09-25 04:25:21,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2163. [2020-09-25 04:25:21,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2163 states. [2020-09-25 04:25:21,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 2692 transitions. [2020-09-25 04:25:21,663 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 2692 transitions. Word has length 193 [2020-09-25 04:25:21,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:21,666 INFO L479 AbstractCegarLoop]: Abstraction has 2163 states and 2692 transitions. [2020-09-25 04:25:21,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:25:21,667 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 2692 transitions. [2020-09-25 04:25:21,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 04:25:21,679 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:21,679 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:21,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:25:21,680 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:21,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:21,680 INFO L82 PathProgramCache]: Analyzing trace with hash 82298840, now seen corresponding path program 1 times [2020-09-25 04:25:21,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:21,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071941906] [2020-09-25 04:25:21,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:21,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:21,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:22,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:22,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:22,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:22,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:22,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:22,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:22,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:23,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:24,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:24,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:24,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:25,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:25,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:26,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:26,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 04:25:26,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 04:25:26,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:25:26,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:26,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:26,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:26,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-25 04:25:26,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 04:25:26,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:25:26,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:26,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:26,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:26,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:26,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:26,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:25:26,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:26,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:26,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:26,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:26,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:26,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:26,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:26,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:26,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:26,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:25:26,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:26,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:25:26,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:26,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:26,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:26,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:26,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:26,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:25:26,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 04:25:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:26,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:26,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:26,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:26,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:26,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 04:25:26,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:26,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:26,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:26,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:26,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:25:26,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:25:26,979 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 04:25:26,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071941906] [2020-09-25 04:25:26,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:26,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:25:26,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220266976] [2020-09-25 04:25:26,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:25:26,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:26,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:25:26,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:25:26,982 INFO L87 Difference]: Start difference. First operand 2163 states and 2692 transitions. Second operand 5 states. [2020-09-25 04:25:28,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:28,941 INFO L93 Difference]: Finished difference Result 5646 states and 7204 transitions. [2020-09-25 04:25:28,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:25:28,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2020-09-25 04:25:28,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:28,966 INFO L225 Difference]: With dead ends: 5646 [2020-09-25 04:25:28,967 INFO L226 Difference]: Without dead ends: 3507 [2020-09-25 04:25:28,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:25:28,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3507 states. [2020-09-25 04:25:29,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3507 to 3311. [2020-09-25 04:25:29,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3311 states. [2020-09-25 04:25:29,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3311 states to 3311 states and 4108 transitions. [2020-09-25 04:25:29,066 INFO L78 Accepts]: Start accepts. Automaton has 3311 states and 4108 transitions. Word has length 200 [2020-09-25 04:25:29,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:29,066 INFO L479 AbstractCegarLoop]: Abstraction has 3311 states and 4108 transitions. [2020-09-25 04:25:29,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:25:29,067 INFO L276 IsEmpty]: Start isEmpty. Operand 3311 states and 4108 transitions. [2020-09-25 04:25:29,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-25 04:25:29,081 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:29,082 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:29,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:25:29,082 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:29,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:29,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1184211931, now seen corresponding path program 1 times [2020-09-25 04:25:29,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:29,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029874292] [2020-09-25 04:25:29,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:29,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:29,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:29,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:29,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:30,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:30,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:34,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:34,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-25 04:25:34,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:25:34,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:25:34,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:34,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:25:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:25:34,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:25:34,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:34,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:34,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:34,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:34,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:34,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:25:34,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:34,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:34,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:34,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:34,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:34,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:34,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:34,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:34,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:34,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:25:34,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:34,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:25:34,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:34,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:34,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:34,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:34,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:25:34,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:25:34,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:25:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:34,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:34,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:34,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:25:34,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:34,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 04:25:34,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:34,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:34,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:34,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:25:34,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:25:34,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-25 04:25:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:34,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:34,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:34,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:25:34,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:34,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 04:25:34,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:34,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:34,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:34,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 04:25:34,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:34,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:34,524 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 78 proven. 14 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 04:25:34,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029874292] [2020-09-25 04:25:34,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:34,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:25:34,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053049262] [2020-09-25 04:25:34,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:25:34,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:34,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:25:34,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:25:34,527 INFO L87 Difference]: Start difference. First operand 3311 states and 4108 transitions. Second operand 7 states.