/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/Problem02_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:27:21,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:27:21,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:27:21,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:27:21,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:27:21,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:27:21,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:27:21,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:27:21,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:27:21,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:27:21,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:27:21,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:27:21,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:27:21,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:27:21,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:27:21,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:27:21,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:27:21,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:27:21,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:27:21,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:27:21,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:27:21,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:27:21,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:27:21,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:27:21,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:27:21,258 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:27:21,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:27:21,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:27:21,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:27:21,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:27:21,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:27:21,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:27:21,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:27:21,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:27:21,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:27:21,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:27:21,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:27:21,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:27:21,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:27:21,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:27:21,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:27:21,269 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 04:27:21,300 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:27:21,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:27:21,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:27:21,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:27:21,302 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:27:21,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:27:21,303 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:27:21,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:27:21,303 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:27:21,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:27:21,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:27:21,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:27:21,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:27:21,304 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:27:21,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:27:21,304 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:27:21,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:27:21,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:27:21,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:27:21,305 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:27:21,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:27:21,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:27:21,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:27:21,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:27:21,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:27:21,306 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:27:21,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:27:21,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:27:21,307 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:27:21,307 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 04:27:21,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:27:21,800 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:27:21,804 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:27:21,806 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:27:21,806 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:27:21,807 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label22.c [2020-09-25 04:27:21,891 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ffbf0107/ef4ee5d438cf47acbdc3316dcd5f2288/FLAGdec5ea600 [2020-09-25 04:27:22,565 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:27:22,566 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label22.c [2020-09-25 04:27:22,584 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ffbf0107/ef4ee5d438cf47acbdc3316dcd5f2288/FLAGdec5ea600 [2020-09-25 04:27:22,742 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ffbf0107/ef4ee5d438cf47acbdc3316dcd5f2288 [2020-09-25 04:27:22,756 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:27:22,763 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:27:22,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:27:22,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:27:22,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:27:22,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:27:22" (1/1) ... [2020-09-25 04:27:22,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e37eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:22, skipping insertion in model container [2020-09-25 04:27:22,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:27:22" (1/1) ... [2020-09-25 04:27:22,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:27:22,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:27:23,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:27:23,304 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:27:23,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:27:23,595 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:27:23,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:23 WrapperNode [2020-09-25 04:27:23,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:27:23,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:27:23,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:27:23,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:27:23,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:23" (1/1) ... [2020-09-25 04:27:23,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:23" (1/1) ... [2020-09-25 04:27:23,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:23" (1/1) ... [2020-09-25 04:27:23,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:23" (1/1) ... [2020-09-25 04:27:23,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:23" (1/1) ... [2020-09-25 04:27:23,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:23" (1/1) ... [2020-09-25 04:27:23,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:23" (1/1) ... [2020-09-25 04:27:23,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:27:23,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:27:23,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:27:23,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:27:23,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:23" (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 04:27:23,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:27:23,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:27:23,831 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:27:23,832 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:27:23,832 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:27:23,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:27:23,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:27:23,833 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:27:23,833 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:27:23,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:27:23,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:27:25,393 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:27:25,394 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:27:25,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:27:25 BoogieIcfgContainer [2020-09-25 04:27:25,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:27:25,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:27:25,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:27:25,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:27:25,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:27:22" (1/3) ... [2020-09-25 04:27:25,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39890648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:27:25, skipping insertion in model container [2020-09-25 04:27:25,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:23" (2/3) ... [2020-09-25 04:27:25,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39890648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:27:25, skipping insertion in model container [2020-09-25 04:27:25,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:27:25" (3/3) ... [2020-09-25 04:27:25,416 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label22.c [2020-09-25 04:27:25,430 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:27:25,445 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:27:25,472 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:27:25,513 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:27:25,514 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:27:25,514 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:27:25,514 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:27:25,514 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:27:25,515 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:27:25,515 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:27:25,515 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:27:25,552 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 04:27:25,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 04:27:25,573 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:25,575 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] [2020-09-25 04:27:25,576 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:25,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:25,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1564262750, now seen corresponding path program 1 times [2020-09-25 04:27:25,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:25,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829968196] [2020-09-25 04:27:25,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:26,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:26,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:27,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:27,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:28,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:28,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:30,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:30,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 04:27:30,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:27:30,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 04:27:30,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:30,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:30,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:27:30,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:27:30,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 04:27:30,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:27:31,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:31,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:31,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:31,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:31,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:31,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 04:27:31,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:31,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:31,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:31,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:31,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:27:31,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:27:31,336 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 04:27:31,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829968196] [2020-09-25 04:27:31,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:27:31,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:27:31,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284585098] [2020-09-25 04:27:31,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:27:31,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:31,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:27:31,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:27:31,373 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 04:27:34,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:34,800 INFO L93 Difference]: Finished difference Result 1431 states and 2025 transitions. [2020-09-25 04:27:34,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:27:34,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-09-25 04:27:34,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:34,840 INFO L225 Difference]: With dead ends: 1431 [2020-09-25 04:27:34,840 INFO L226 Difference]: Without dead ends: 848 [2020-09-25 04:27:34,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:27:34,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-09-25 04:27:35,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 775. [2020-09-25 04:27:35,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-09-25 04:27:35,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 947 transitions. [2020-09-25 04:27:35,035 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 947 transitions. Word has length 123 [2020-09-25 04:27:35,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:35,037 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 947 transitions. [2020-09-25 04:27:35,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:27:35,037 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 947 transitions. [2020-09-25 04:27:35,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 04:27:35,053 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:35,054 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:27:35,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:27:35,057 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:35,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:35,058 INFO L82 PathProgramCache]: Analyzing trace with hash 2015374481, now seen corresponding path program 1 times [2020-09-25 04:27:35,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:35,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868567944] [2020-09-25 04:27:35,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:35,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:35,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:35,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:36,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:40,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:40,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 04:27:40,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:27:40,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 04:27:40,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:40,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:40,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:27:40,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:27:40,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 04:27:40,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:40,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:40,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:40,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:40,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:40,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:40,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 04:27:40,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:40,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:40,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:27:40,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:40,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:40,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:40,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:40,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:40,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:40,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 04:27:40,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:40,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:40,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:40,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:27:40,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:27:40,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:40,514 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:27:40,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868567944] [2020-09-25 04:27:40,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:27:40,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:27:40,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763257992] [2020-09-25 04:27:40,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:27:40,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:40,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:27:40,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:27:40,521 INFO L87 Difference]: Start difference. First operand 775 states and 947 transitions. Second operand 7 states. [2020-09-25 04:27:42,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:42,821 INFO L93 Difference]: Finished difference Result 2035 states and 2620 transitions. [2020-09-25 04:27:42,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:27:42,823 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-09-25 04:27:42,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:42,843 INFO L225 Difference]: With dead ends: 2035 [2020-09-25 04:27:42,843 INFO L226 Difference]: Without dead ends: 1282 [2020-09-25 04:27:42,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 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 04:27:42,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2020-09-25 04:27:42,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1240. [2020-09-25 04:27:42,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1240 states. [2020-09-25 04:27:42,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1542 transitions. [2020-09-25 04:27:42,926 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1542 transitions. Word has length 152 [2020-09-25 04:27:42,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:42,927 INFO L479 AbstractCegarLoop]: Abstraction has 1240 states and 1542 transitions. [2020-09-25 04:27:42,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:27:42,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1542 transitions. [2020-09-25 04:27:42,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 04:27:42,935 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:42,935 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:42,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:27:42,936 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:42,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:42,936 INFO L82 PathProgramCache]: Analyzing trace with hash -2080388409, now seen corresponding path program 1 times [2020-09-25 04:27:42,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:42,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230250462] [2020-09-25 04:27:42,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:43,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:43,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:43,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:44,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:45,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:47,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:47,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:47,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 04:27:47,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:27:47,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 04:27:47,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:47,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:47,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:27:47,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:27:47,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 04:27:47,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:48,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:48,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:48,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:48,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:48,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:48,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:48,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 04:27:48,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:48,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:48,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:48,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:48,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:27:48,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:48,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:48,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:48,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:48,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 04:27:48,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:48,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 04:27:48,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:48,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:48,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:48,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:27:48,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 04:27:48,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:48,378 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:27:48,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230250462] [2020-09-25 04:27:48,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:27:48,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:27:48,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618554914] [2020-09-25 04:27:48,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:27:48,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:48,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:27:48,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:27:48,386 INFO L87 Difference]: Start difference. First operand 1240 states and 1542 transitions. Second operand 7 states. [2020-09-25 04:27:50,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:50,990 INFO L93 Difference]: Finished difference Result 3648 states and 4758 transitions. [2020-09-25 04:27:50,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:27:50,991 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2020-09-25 04:27:50,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:51,015 INFO L225 Difference]: With dead ends: 3648 [2020-09-25 04:27:51,015 INFO L226 Difference]: Without dead ends: 2430 [2020-09-25 04:27:51,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:27:51,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2020-09-25 04:27:51,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 2306. [2020-09-25 04:27:51,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2306 states. [2020-09-25 04:27:51,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 2904 transitions. [2020-09-25 04:27:51,153 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 2904 transitions. Word has length 171 [2020-09-25 04:27:51,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:51,155 INFO L479 AbstractCegarLoop]: Abstraction has 2306 states and 2904 transitions. [2020-09-25 04:27:51,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:27:51,155 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 2904 transitions. [2020-09-25 04:27:51,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 04:27:51,166 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:51,166 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, 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] [2020-09-25 04:27:51,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:27:51,166 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:51,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:51,168 INFO L82 PathProgramCache]: Analyzing trace with hash 411141510, now seen corresponding path program 1 times [2020-09-25 04:27:51,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:51,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582339884] [2020-09-25 04:27:51,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:51,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:51,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:51,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:52,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:52,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:56,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:56,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 04:27:56,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:27:56,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:27:56,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:56,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:56,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:56,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-09-25 04:27:56,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 04:27:56,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:27:56,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:56,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:56,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:56,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:56,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:56,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:27:56,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:56,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:56,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:56,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:56,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:56,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:56,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:56,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:56,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:56,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 04:27:56,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:56,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 04:27:56,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:56,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:56,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:56,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:56,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 04:27:56,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:27:56,596 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:27:56,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582339884] [2020-09-25 04:27:56,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:56,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:27:56,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993318162] [2020-09-25 04:27:56,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:27:56,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:56,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:27:56,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:27:56,605 INFO L87 Difference]: Start difference. First operand 2306 states and 2904 transitions. Second operand 5 states. [2020-09-25 04:27:58,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:58,977 INFO L93 Difference]: Finished difference Result 6104 states and 7859 transitions. [2020-09-25 04:27:58,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:27:58,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-09-25 04:27:58,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:59,000 INFO L225 Difference]: With dead ends: 6104 [2020-09-25 04:27:59,001 INFO L226 Difference]: Without dead ends: 3651 [2020-09-25 04:27:59,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:27:59,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3651 states. [2020-09-25 04:27:59,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3651 to 3539. [2020-09-25 04:27:59,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3539 states. [2020-09-25 04:27:59,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3539 states to 3539 states and 4462 transitions. [2020-09-25 04:27:59,112 INFO L78 Accepts]: Start accepts. Automaton has 3539 states and 4462 transitions. Word has length 189 [2020-09-25 04:27:59,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:59,113 INFO L479 AbstractCegarLoop]: Abstraction has 3539 states and 4462 transitions. [2020-09-25 04:27:59,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:27:59,113 INFO L276 IsEmpty]: Start isEmpty. Operand 3539 states and 4462 transitions. [2020-09-25 04:27:59,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 04:27:59,127 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:59,127 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 04:27:59,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:27:59,127 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:59,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:59,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1467050811, now seen corresponding path program 1 times [2020-09-25 04:27:59,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:59,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343307971] [2020-09-25 04:27:59,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:59,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:59,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:59,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:59,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:59,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:01,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:01,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:01,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:03,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:04,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:04,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 04:28:04,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:28:04,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 04:28:04,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:04,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:04,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:04,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 04:28:04,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 04:28:04,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:28:04,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:04,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:04,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:04,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:04,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:04,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:28:04,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:04,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:04,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:04,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:04,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:04,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:04,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:04,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:04,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:04,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:28:04,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:04,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:28:04,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:04,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:04,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:04,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:04,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:04,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:04,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 04:28:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:04,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:04,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:04,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 04:28:04,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:04,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 04:28:04,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:04,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:04,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:04,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:04,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 04:28:04,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:04,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-25 04:28:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:04,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:04,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:04,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:04,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:04,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 04:28:04,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:04,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:04,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:04,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:28:04,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:28:04,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:04,482 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 04:28:04,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343307971] [2020-09-25 04:28:04,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:04,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:28:04,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549775906] [2020-09-25 04:28:04,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:28:04,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:04,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:28:04,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:28:04,486 INFO L87 Difference]: Start difference. First operand 3539 states and 4462 transitions. Second operand 7 states. [2020-09-25 04:28:06,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:06,915 INFO L93 Difference]: Finished difference Result 7974 states and 10187 transitions. [2020-09-25 04:28:06,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 04:28:06,916 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-09-25 04:28:06,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:06,933 INFO L225 Difference]: With dead ends: 7974 [2020-09-25 04:28:06,934 INFO L226 Difference]: Without dead ends: 3477 [2020-09-25 04:28:06,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:28:06,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3477 states. [2020-09-25 04:28:07,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3477 to 3315. [2020-09-25 04:28:07,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3315 states. [2020-09-25 04:28:07,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3315 states to 3315 states and 3976 transitions. [2020-09-25 04:28:07,030 INFO L78 Accepts]: Start accepts. Automaton has 3315 states and 3976 transitions. Word has length 203 [2020-09-25 04:28:07,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:07,031 INFO L479 AbstractCegarLoop]: Abstraction has 3315 states and 3976 transitions. [2020-09-25 04:28:07,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:28:07,031 INFO L276 IsEmpty]: Start isEmpty. Operand 3315 states and 3976 transitions. [2020-09-25 04:28:07,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-25 04:28:07,041 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:07,042 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 04:28:07,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:28:07,042 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:07,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:07,042 INFO L82 PathProgramCache]: Analyzing trace with hash -49704311, now seen corresponding path program 1 times [2020-09-25 04:28:07,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:07,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932150609] [2020-09-25 04:28:07,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:07,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:07,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:07,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:07,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking...