/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:38:06,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:38:06,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:38:06,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:38:06,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:38:06,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:38:06,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:38:06,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:38:06,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:38:06,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:38:06,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:38:06,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:38:06,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:38:06,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:38:06,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:38:06,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:38:06,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:38:06,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:38:06,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:38:06,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:38:06,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:38:06,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:38:06,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:38:06,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:38:06,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:38:06,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:38:06,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:38:06,308 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:38:06,309 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:38:06,310 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:38:06,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:38:06,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:38:06,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:38:06,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:38:06,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:38:06,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:38:06,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:38:06,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:38:06,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:38:06,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:38:06,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:38:06,326 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:38:06,355 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:38:06,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:38:06,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:38:06,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:38:06,357 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:38:06,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:38:06,358 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:38:06,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:38:06,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:38:06,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:38:06,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:38:06,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:38:06,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:38:06,359 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:38:06,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:38:06,359 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:38:06,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:38:06,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:38:06,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:38:06,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:38:06,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:38:06,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:38:06,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:38:06,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:38:06,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:38:06,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:38:06,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:38:06,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:38:06,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:38:06,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:38:06,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:38:06,820 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:38:06,825 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:38:06,827 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:38:06,828 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:38:06,829 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label10.c [2020-09-25 05:38:06,910 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79e17ba27/cbcf7b5702f04045a2382608b14e9472/FLAGbeb383a07 [2020-09-25 05:38:07,606 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:38:07,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label10.c [2020-09-25 05:38:07,623 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79e17ba27/cbcf7b5702f04045a2382608b14e9472/FLAGbeb383a07 [2020-09-25 05:38:07,798 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79e17ba27/cbcf7b5702f04045a2382608b14e9472 [2020-09-25 05:38:07,813 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:38:07,818 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:38:07,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:38:07,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:38:07,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:38:07,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:38:07" (1/1) ... [2020-09-25 05:38:07,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ef6092a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:07, skipping insertion in model container [2020-09-25 05:38:07,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:38:07" (1/1) ... [2020-09-25 05:38:07,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:38:07,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:38:08,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:38:08,503 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:38:08,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:38:08,626 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:38:08,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:08 WrapperNode [2020-09-25 05:38:08,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:38:08,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:38:08,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:38:08,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:38:08,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:08" (1/1) ... [2020-09-25 05:38:08,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:08" (1/1) ... [2020-09-25 05:38:08,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:08" (1/1) ... [2020-09-25 05:38:08,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:08" (1/1) ... [2020-09-25 05:38:08,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:08" (1/1) ... [2020-09-25 05:38:08,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:08" (1/1) ... [2020-09-25 05:38:08,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:08" (1/1) ... [2020-09-25 05:38:08,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:38:08,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:38:08,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:38:08,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:38:08,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:38:08,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:38:08,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:38:08,864 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:38:08,864 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:38:08,864 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:38:08,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:38:08,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:38:08,865 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:38:08,865 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:38:08,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:38:08,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:38:10,429 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:38:10,430 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:38:10,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:38:10 BoogieIcfgContainer [2020-09-25 05:38:10,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:38:10,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:38:10,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:38:10,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:38:10,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:38:07" (1/3) ... [2020-09-25 05:38:10,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3572d228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:38:10, skipping insertion in model container [2020-09-25 05:38:10,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:08" (2/3) ... [2020-09-25 05:38:10,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3572d228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:38:10, skipping insertion in model container [2020-09-25 05:38:10,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:38:10" (3/3) ... [2020-09-25 05:38:10,465 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label10.c [2020-09-25 05:38:10,478 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:38:10,494 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:38:10,518 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:38:10,562 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:38:10,562 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:38:10,563 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:38:10,563 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:38:10,563 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:38:10,563 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:38:10,563 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:38:10,563 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:38:10,597 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 05:38:10,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 05:38:10,609 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:10,610 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] [2020-09-25 05:38:10,611 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:10,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:10,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1834886135, now seen corresponding path program 1 times [2020-09-25 05:38:10,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:10,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278188530] [2020-09-25 05:38:10,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:10,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:11,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:11,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:11,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:11,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 05:38:11,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:38:11,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 643 [2020-09-25 05:38:11,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:11,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:11,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:38:11,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:38:11,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 05:38:11,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:38:11,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:11,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:11,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:11,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:11,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:11,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:38:11,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:11,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:11,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:11,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:11,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:38:11,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:11,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:11,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278188530] [2020-09-25 05:38:11,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:38:11,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:38:11,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668704021] [2020-09-25 05:38:11,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:38:11,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:11,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:38:11,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:38:11,722 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 05:38:13,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:13,565 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 05:38:13,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:38:13,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-09-25 05:38:13,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:13,609 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 05:38:13,609 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 05:38:13,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:13,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 05:38:13,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 05:38:13,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 05:38:13,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 05:38:13,725 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 67 [2020-09-25 05:38:13,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:13,725 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 05:38:13,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:38:13,726 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 05:38:13,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 05:38:13,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:13,734 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:38:13,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:38:13,735 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:13,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:13,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1798381656, now seen corresponding path program 1 times [2020-09-25 05:38:13,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:13,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654224410] [2020-09-25 05:38:13,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:13,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:13,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:14,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:14,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:14,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:15,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:18,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:18,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 05:38:18,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:38:18,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 05:38:18,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:18,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:18,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:18,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 05:38:18,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 05:38:18,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:18,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:18,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:18,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:18,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:18,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:19,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 05:38:19,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:19,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:19,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:19,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:19,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:19,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:19,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:19,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:19,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:19,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:38:19,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:19,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 05:38:19,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:19,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:19,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:19,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:19,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 05:38:19,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:38:19,328 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:19,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654224410] [2020-09-25 05:38:19,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:19,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:38:19,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85816351] [2020-09-25 05:38:19,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:38:19,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:19,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:38:19,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:38:19,333 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 6 states. [2020-09-25 05:38:21,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:21,594 INFO L93 Difference]: Finished difference Result 850 states and 1122 transitions. [2020-09-25 05:38:21,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:38:21,595 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-09-25 05:38:21,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:21,601 INFO L225 Difference]: With dead ends: 850 [2020-09-25 05:38:21,601 INFO L226 Difference]: Without dead ends: 848 [2020-09-25 05:38:21,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:38:21,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-09-25 05:38:21,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 848. [2020-09-25 05:38:21,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 848 states. [2020-09-25 05:38:21,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1119 transitions. [2020-09-25 05:38:21,647 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1119 transitions. Word has length 146 [2020-09-25 05:38:21,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:21,648 INFO L479 AbstractCegarLoop]: Abstraction has 848 states and 1119 transitions. [2020-09-25 05:38:21,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:38:21,648 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1119 transitions. [2020-09-25 05:38:21,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 05:38:21,656 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:21,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:38:21,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:38:21,657 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:21,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:21,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1814743407, now seen corresponding path program 1 times [2020-09-25 05:38:21,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:21,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895792871] [2020-09-25 05:38:21,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:21,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:21,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:22,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:22,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:24,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:26,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:26,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 05:38:26,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:38:26,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 05:38:26,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:26,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:26,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:38:26,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:38:26,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 05:38:26,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:26,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:26,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:26,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:26,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:26,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:26,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 05:38:26,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:26,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:26,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:26,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:26,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:38:26,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:26,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:26,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:27,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:27,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 05:38:27,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:27,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-25 05:38:27,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:27,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:27,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:27,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:38:27,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 05:38:27,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:27,316 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:27,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895792871] [2020-09-25 05:38:27,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:38:27,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:38:27,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603164664] [2020-09-25 05:38:27,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:38:27,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:27,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:38:27,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:38:27,321 INFO L87 Difference]: Start difference. First operand 848 states and 1119 transitions. Second operand 7 states. [2020-09-25 05:38:29,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:29,684 INFO L93 Difference]: Finished difference Result 1852 states and 2501 transitions. [2020-09-25 05:38:29,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:38:29,685 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-09-25 05:38:29,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:29,693 INFO L225 Difference]: With dead ends: 1852 [2020-09-25 05:38:29,693 INFO L226 Difference]: Without dead ends: 1019 [2020-09-25 05:38:29,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:38:29,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2020-09-25 05:38:29,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 1005. [2020-09-25 05:38:29,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-09-25 05:38:29,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1273 transitions. [2020-09-25 05:38:29,757 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1273 transitions. Word has length 203 [2020-09-25 05:38:29,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:29,763 INFO L479 AbstractCegarLoop]: Abstraction has 1005 states and 1273 transitions. [2020-09-25 05:38:29,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:38:29,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1273 transitions. [2020-09-25 05:38:29,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-25 05:38:29,774 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:29,774 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:38:29,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:38:29,775 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:29,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:29,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1197577330, now seen corresponding path program 1 times [2020-09-25 05:38:29,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:29,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981794319] [2020-09-25 05:38:29,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:29,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:30,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:30,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:30,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:34,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:34,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:34,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-09-25 05:38:34,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:38:34,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:38:34,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:34,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:34,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:34,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 05:38:34,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 05:38:34,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:34,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:34,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:34,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:34,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:34,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:34,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:38:34,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:34,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:34,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:34,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:34,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:34,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:34,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:34,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:35,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:35,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:38:35,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:35,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 05:38:35,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:35,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:35,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:35,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:35,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 05:38:35,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:35,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 05:38:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:35,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:35,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:35,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 05:38:35,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:35,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-09-25 05:38:35,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:35,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:35,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:35,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:38:35,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 05:38:35,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:35,623 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:38:35,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981794319] [2020-09-25 05:38:35,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:35,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:38:35,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343192507] [2020-09-25 05:38:35,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:38:35,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:35,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:38:35,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:38:35,629 INFO L87 Difference]: Start difference. First operand 1005 states and 1273 transitions. Second operand 7 states. [2020-09-25 05:38:39,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:39,007 INFO L93 Difference]: Finished difference Result 2594 states and 3535 transitions. [2020-09-25 05:38:39,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:38:39,007 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-09-25 05:38:39,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:39,025 INFO L225 Difference]: With dead ends: 2594 [2020-09-25 05:38:39,025 INFO L226 Difference]: Without dead ends: 1754 [2020-09-25 05:38:39,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:38:39,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2020-09-25 05:38:39,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1522. [2020-09-25 05:38:39,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1522 states. [2020-09-25 05:38:39,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 1948 transitions. [2020-09-25 05:38:39,116 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 1948 transitions. Word has length 275 [2020-09-25 05:38:39,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:39,116 INFO L479 AbstractCegarLoop]: Abstraction has 1522 states and 1948 transitions. [2020-09-25 05:38:39,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:38:39,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 1948 transitions. [2020-09-25 05:38:39,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-09-25 05:38:39,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:39,128 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:38:39,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:38:39,129 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:39,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:39,129 INFO L82 PathProgramCache]: Analyzing trace with hash 467338268, now seen corresponding path program 1 times [2020-09-25 05:38:39,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:39,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481200925] [2020-09-25 05:38:39,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:39,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:39,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:39,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:41,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:41,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:41,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:44,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:44,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-09-25 05:38:44,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:38:44,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 05:38:44,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:44,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:44,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:44,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-09-25 05:38:44,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 05:38:44,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:44,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:44,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:44,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:44,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:44,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:44,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:38:44,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:44,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:44,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:44,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:44,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:44,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:44,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:44,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:44,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:44,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 05:38:44,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:44,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 05:38:44,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:44,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:44,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:44,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:44,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 05:38:44,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:38:44,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 05:38:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:44,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:44,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:44,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 05:38:44,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:44,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-09-25 05:38:44,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:44,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:44,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:44,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:38:44,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 05:38:44,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:44,975 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:38:44,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481200925] [2020-09-25 05:38:44,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:44,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:38:44,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252817081] [2020-09-25 05:38:44,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:38:44,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:44,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:38:44,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:38:44,978 INFO L87 Difference]: Start difference. First operand 1522 states and 1948 transitions. Second operand 8 states. [2020-09-25 05:38:48,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:48,120 INFO L93 Difference]: Finished difference Result 3508 states and 4722 transitions. [2020-09-25 05:38:48,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 05:38:48,121 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 279 [2020-09-25 05:38:48,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:48,133 INFO L225 Difference]: With dead ends: 3508 [2020-09-25 05:38:48,133 INFO L226 Difference]: Without dead ends: 2151 [2020-09-25 05:38:48,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:38:48,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2020-09-25 05:38:48,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 1649. [2020-09-25 05:38:48,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1649 states. [2020-09-25 05:38:48,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 1986 transitions. [2020-09-25 05:38:48,198 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 1986 transitions. Word has length 279 [2020-09-25 05:38:48,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:48,198 INFO L479 AbstractCegarLoop]: Abstraction has 1649 states and 1986 transitions. [2020-09-25 05:38:48,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:38:48,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 1986 transitions. [2020-09-25 05:38:48,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-09-25 05:38:48,210 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:48,210 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:38:48,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:38:48,211 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:48,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:48,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1512672608, now seen corresponding path program 1 times [2020-09-25 05:38:48,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:48,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410259774] [2020-09-25 05:38:48,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:48,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:48,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:48,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:48,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:48,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:50,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:50,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:53,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:53,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-09-25 05:38:53,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:38:53,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:38:53,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:53,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:53,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:53,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 05:38:53,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 05:38:53,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:53,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:53,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:53,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:53,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:53,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:53,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:38:53,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:53,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:53,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:53,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:53,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:53,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:53,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:53,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:53,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:53,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:38:53,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:53,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 05:38:53,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:53,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:53,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:53,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:53,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 05:38:53,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:53,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 05:38:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:53,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking...