/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=0.8 --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_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:54:57,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:54:57,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:54:57,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:54:57,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:54:57,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:54:57,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:54:57,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:54:57,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:54:57,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:54:57,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:54:57,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:54:57,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:54:57,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:54:57,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:54:57,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:54:57,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:54:57,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:54:57,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:54:57,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:54:57,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:54:57,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:54:57,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:54:57,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:54:57,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:54:57,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:54:57,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:54:57,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:54:57,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:54:57,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:54:57,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:54:57,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:54:57,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:54:57,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:54:57,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:54:57,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:54:57,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:54:57,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:54:57,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:54:57,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:54:57,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:54:57,287 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 07:54:57,334 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:54:57,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:54:57,336 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:54:57,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:54:57,337 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:54:57,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:54:57,338 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:54:57,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:54:57,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:54:57,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:54:57,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:54:57,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:54:57,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:54:57,340 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:54:57,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:54:57,341 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:54:57,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:54:57,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:54:57,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:54:57,342 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:54:57,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:54:57,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:54:57,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:54:57,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:54:57,343 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:54:57,343 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:54:57,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:54:57,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:54:57,343 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:54:57,344 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 07:54:57,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:54:57,825 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:54:57,829 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:54:57,831 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:54:57,832 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:54:57,833 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label50.c [2020-09-25 07:54:57,928 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e7dabca4/7ec13960947b407881a2010d79ef377e/FLAGe15040176 [2020-09-25 07:54:58,647 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:54:58,648 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label50.c [2020-09-25 07:54:58,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e7dabca4/7ec13960947b407881a2010d79ef377e/FLAGe15040176 [2020-09-25 07:54:58,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e7dabca4/7ec13960947b407881a2010d79ef377e [2020-09-25 07:54:58,921 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:54:58,928 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:54:58,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:54:58,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:54:58,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:54:58,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:54:58" (1/1) ... [2020-09-25 07:54:58,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1840d501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:58, skipping insertion in model container [2020-09-25 07:54:58,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:54:58" (1/1) ... [2020-09-25 07:54:58,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:54:59,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:54:59,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:54:59,610 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:54:59,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:54:59,749 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:54:59,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:59 WrapperNode [2020-09-25 07:54:59,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:54:59,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:54:59,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:54:59,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:54:59,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:59" (1/1) ... [2020-09-25 07:54:59,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:59" (1/1) ... [2020-09-25 07:54:59,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:59" (1/1) ... [2020-09-25 07:54:59,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:59" (1/1) ... [2020-09-25 07:54:59,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:59" (1/1) ... [2020-09-25 07:54:59,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:59" (1/1) ... [2020-09-25 07:54:59,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:59" (1/1) ... [2020-09-25 07:54:59,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:54:59,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:54:59,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:54:59,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:54:59,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:59" (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 07:55:00,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:55:00,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:55:00,034 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:55:00,034 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:55:00,035 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:55:00,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:55:00,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:55:00,036 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:55:00,037 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:55:00,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:55:00,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:55:01,609 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:55:01,610 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:55:01,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:55:01 BoogieIcfgContainer [2020-09-25 07:55:01,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:55:01,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:55:01,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:55:01,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:55:01,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:54:58" (1/3) ... [2020-09-25 07:55:01,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6236b7d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:55:01, skipping insertion in model container [2020-09-25 07:55:01,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:59" (2/3) ... [2020-09-25 07:55:01,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6236b7d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:55:01, skipping insertion in model container [2020-09-25 07:55:01,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:55:01" (3/3) ... [2020-09-25 07:55:01,640 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label50.c [2020-09-25 07:55:01,654 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:55:01,671 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:55:01,697 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:55:01,744 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:55:01,745 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:55:01,745 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:55:01,746 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:55:01,746 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:55:01,746 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:55:01,746 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:55:01,746 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:55:01,792 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 07:55:01,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 07:55:01,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:01,813 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] [2020-09-25 07:55:01,813 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:01,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:01,820 INFO L82 PathProgramCache]: Analyzing trace with hash -593885342, now seen corresponding path program 1 times [2020-09-25 07:55:01,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:01,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483358567] [2020-09-25 07:55:01,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:02,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:02,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:02,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:04,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:06,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:06,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 07:55:06,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:55:06,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3963 [2020-09-25 07:55:06,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:06,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:06,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:55:06,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:55:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 07:55:06,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:55:06,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:06,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:06,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:06,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:06,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:06,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 07:55:06,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:06,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:06,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:06,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:06,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:55:06,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:06,336 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 07:55:06,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483358567] [2020-09-25 07:55:06,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:55:06,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:55:06,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067112900] [2020-09-25 07:55:06,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:06,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:06,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:06,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:06,371 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 07:55:09,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:09,503 INFO L93 Difference]: Finished difference Result 1539 states and 2132 transitions. [2020-09-25 07:55:09,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:55:09,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-09-25 07:55:09,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:09,534 INFO L225 Difference]: With dead ends: 1539 [2020-09-25 07:55:09,534 INFO L226 Difference]: Without dead ends: 935 [2020-09-25 07:55:09,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:55:09,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2020-09-25 07:55:09,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 878. [2020-09-25 07:55:09,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-09-25 07:55:09,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1089 transitions. [2020-09-25 07:55:09,672 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1089 transitions. Word has length 107 [2020-09-25 07:55:09,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:09,673 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1089 transitions. [2020-09-25 07:55:09,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:55:09,674 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1089 transitions. [2020-09-25 07:55:09,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-25 07:55:09,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:09,683 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 07:55:09,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:55:09,683 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:09,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:09,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1658093710, now seen corresponding path program 1 times [2020-09-25 07:55:09,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:09,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795032399] [2020-09-25 07:55:09,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:09,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:09,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:09,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:09,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:10,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:12,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:12,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 07:55:12,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:55:12,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2912 [2020-09-25 07:55:12,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:12,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:12,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:12,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 07:55:12,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 07:55:12,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:12,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:12,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:12,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:12,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:12,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:12,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 07:55:12,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:12,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:12,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:12,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:12,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:12,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:55:12,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:12,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:12,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:12,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:55:12,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:12,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:55:12,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:12,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:12,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:12,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:12,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 07:55:12,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:12,937 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:12,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795032399] [2020-09-25 07:55:12,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:12,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:55:12,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932515706] [2020-09-25 07:55:12,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:12,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:12,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:12,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:12,943 INFO L87 Difference]: Start difference. First operand 878 states and 1089 transitions. Second operand 5 states. [2020-09-25 07:55:14,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:14,964 INFO L93 Difference]: Finished difference Result 2199 states and 2857 transitions. [2020-09-25 07:55:14,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:55:14,966 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-09-25 07:55:14,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:14,975 INFO L225 Difference]: With dead ends: 2199 [2020-09-25 07:55:14,975 INFO L226 Difference]: Without dead ends: 1343 [2020-09-25 07:55:14,979 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 07:55:14,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2020-09-25 07:55:15,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1330. [2020-09-25 07:55:15,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1330 states. [2020-09-25 07:55:15,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1680 transitions. [2020-09-25 07:55:15,039 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1680 transitions. Word has length 125 [2020-09-25 07:55:15,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:15,040 INFO L479 AbstractCegarLoop]: Abstraction has 1330 states and 1680 transitions. [2020-09-25 07:55:15,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:55:15,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1680 transitions. [2020-09-25 07:55:15,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 07:55:15,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:15,047 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:15,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:55:15,047 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:15,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:15,048 INFO L82 PathProgramCache]: Analyzing trace with hash -125182521, now seen corresponding path program 1 times [2020-09-25 07:55:15,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:15,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068822975] [2020-09-25 07:55:15,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:15,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:15,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:15,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:15,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:17,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:17,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 07:55:17,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:55:17,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2064 [2020-09-25 07:55:17,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:17,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:17,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:17,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 07:55:17,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 07:55:17,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:17,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:17,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:17,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:17,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:17,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:17,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:55:17,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:17,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:17,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:17,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:17,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:17,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:17,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:17,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:17,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:17,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 07:55:17,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:17,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 07:55:17,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:17,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:17,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:17,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:17,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 07:55:17,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:17,396 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:17,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068822975] [2020-09-25 07:55:17,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:17,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:55:17,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047198696] [2020-09-25 07:55:17,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:17,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:17,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:17,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:17,400 INFO L87 Difference]: Start difference. First operand 1330 states and 1680 transitions. Second operand 5 states. [2020-09-25 07:55:19,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:19,079 INFO L93 Difference]: Finished difference Result 3411 states and 4445 transitions. [2020-09-25 07:55:19,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:55:19,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 07:55:19,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:19,087 INFO L225 Difference]: With dead ends: 3411 [2020-09-25 07:55:19,087 INFO L226 Difference]: Without dead ends: 1270 [2020-09-25 07:55:19,094 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 07:55:19,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2020-09-25 07:55:19,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1257. [2020-09-25 07:55:19,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1257 states. [2020-09-25 07:55:19,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1563 transitions. [2020-09-25 07:55:19,132 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1563 transitions. Word has length 141 [2020-09-25 07:55:19,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:19,133 INFO L479 AbstractCegarLoop]: Abstraction has 1257 states and 1563 transitions. [2020-09-25 07:55:19,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:55:19,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1563 transitions. [2020-09-25 07:55:19,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 07:55:19,137 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:19,138 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:19,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:55:19,138 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:19,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:19,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1712229635, now seen corresponding path program 1 times [2020-09-25 07:55:19,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:19,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75147478] [2020-09-25 07:55:19,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:19,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:19,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:19,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 07:55:19,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:19,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-09-25 07:55:19,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:19,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:19,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:55:19,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:55:19,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 07:55:19,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:19,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:19,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:19,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:19,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:19,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:19,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 07:55:19,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:19,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:19,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:19,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:19,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:55:19,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:19,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:19,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:19,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:19,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:55:19,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:19,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 07:55:19,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:19,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:19,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:19,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:55:19,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 07:55:19,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:19,845 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:19,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75147478] [2020-09-25 07:55:19,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:55:19,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:55:19,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296915491] [2020-09-25 07:55:19,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:55:19,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:19,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:55:19,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:55:19,850 INFO L87 Difference]: Start difference. First operand 1257 states and 1563 transitions. Second operand 7 states. [2020-09-25 07:55:21,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:21,901 INFO L93 Difference]: Finished difference Result 3481 states and 4471 transitions. [2020-09-25 07:55:21,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:55:21,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2020-09-25 07:55:21,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:21,911 INFO L225 Difference]: With dead ends: 3481 [2020-09-25 07:55:21,912 INFO L226 Difference]: Without dead ends: 2246 [2020-09-25 07:55:21,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:55:21,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2020-09-25 07:55:21,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 2196. [2020-09-25 07:55:21,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2196 states. [2020-09-25 07:55:21,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 2604 transitions. [2020-09-25 07:55:21,980 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 2604 transitions. Word has length 145 [2020-09-25 07:55:21,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:21,980 INFO L479 AbstractCegarLoop]: Abstraction has 2196 states and 2604 transitions. [2020-09-25 07:55:21,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:55:21,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 2604 transitions. [2020-09-25 07:55:21,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 07:55:21,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:21,988 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:21,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:55:21,988 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:21,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:21,988 INFO L82 PathProgramCache]: Analyzing trace with hash 740847210, now seen corresponding path program 1 times [2020-09-25 07:55:21,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:21,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842863919] [2020-09-25 07:55:21,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:22,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:22,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:22,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 07:55:22,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:22,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-09-25 07:55:22,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:22,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 07:55:22,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 07:55:22,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:22,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:22,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:22,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:22,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:22,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:22,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:55:22,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:22,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:22,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:22,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:22,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:22,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:22,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:22,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:22,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:22,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:55:22,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:22,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:55:22,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:22,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:22,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:22,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:22,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 07:55:22,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:22,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 07:55:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:22,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:22,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:22,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:55:22,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:22,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 07:55:22,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:22,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:22,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:22,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:55:22,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 07:55:22,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:22,666 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:55:22,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842863919] [2020-09-25 07:55:22,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:22,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:55:22,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050783792] [2020-09-25 07:55:22,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:55:22,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:22,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:55:22,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:55:22,669 INFO L87 Difference]: Start difference. First operand 2196 states and 2604 transitions. Second operand 8 states. [2020-09-25 07:55:24,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:24,889 INFO L93 Difference]: Finished difference Result 4872 states and 5893 transitions. [2020-09-25 07:55:24,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:55:24,890 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 162 [2020-09-25 07:55:24,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:24,904 INFO L225 Difference]: With dead ends: 4872 [2020-09-25 07:55:24,904 INFO L226 Difference]: Without dead ends: 2698 [2020-09-25 07:55:24,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:55:24,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2020-09-25 07:55:24,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 2670. [2020-09-25 07:55:24,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2670 states. [2020-09-25 07:55:24,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 3196 transitions. [2020-09-25 07:55:24,996 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 3196 transitions. Word has length 162 [2020-09-25 07:55:24,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:24,997 INFO L479 AbstractCegarLoop]: Abstraction has 2670 states and 3196 transitions. [2020-09-25 07:55:24,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:55:24,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 3196 transitions. [2020-09-25 07:55:25,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 07:55:25,005 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:25,005 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:25,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:55:25,006 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:25,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:25,006 INFO L82 PathProgramCache]: Analyzing trace with hash -451289247, now seen corresponding path program 1 times [2020-09-25 07:55:25,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:25,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280758019] [2020-09-25 07:55:25,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:25,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:25,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:25,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:25,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 07:55:25,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:55:25,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 837 [2020-09-25 07:55:25,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:25,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:25,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:55:25,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 07:55:25,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 07:55:25,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:25,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:25,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:26,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:26,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:26,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:26,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:55:26,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:26,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:26,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:26,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:26,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:26,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:26,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:26,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:26,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:26,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:55:26,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:26,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 07:55:26,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:26,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:26,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:26,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:26,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:55:26,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:26,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 07:55:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:26,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:26,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:26,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:26,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:55:26,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:55:26,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 07:55:26,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:26,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:26,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:26,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:55:26,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 07:55:26,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 50 [2020-09-25 07:55:26,348 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 47 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 07:55:26,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280758019] [2020-09-25 07:55:26,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:26,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:55:26,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121956534] [2020-09-25 07:55:26,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:55:26,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:26,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:55:26,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:55:26,351 INFO L87 Difference]: Start difference. First operand 2670 states and 3196 transitions. Second operand 6 states. [2020-09-25 07:55:28,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:28,286 INFO L93 Difference]: Finished difference Result 6837 states and 8316 transitions. [2020-09-25 07:55:28,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:55:28,287 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2020-09-25 07:55:28,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:28,313 INFO L225 Difference]: With dead ends: 6837 [2020-09-25 07:55:28,313 INFO L226 Difference]: Without dead ends: 3852 [2020-09-25 07:55:28,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:55:28,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3852 states. [2020-09-25 07:55:28,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3852 to 3732. [2020-09-25 07:55:28,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3732 states. [2020-09-25 07:55:28,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3732 states to 3732 states and 4404 transitions. [2020-09-25 07:55:28,449 INFO L78 Accepts]: Start accepts. Automaton has 3732 states and 4404 transitions. Word has length 167 [2020-09-25 07:55:28,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:28,449 INFO L479 AbstractCegarLoop]: Abstraction has 3732 states and 4404 transitions. [2020-09-25 07:55:28,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:55:28,449 INFO L276 IsEmpty]: Start isEmpty. Operand 3732 states and 4404 transitions. [2020-09-25 07:55:28,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 07:55:28,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:28,460 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:28,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:55:28,461 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:28,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:28,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1319203817, now seen corresponding path program 1 times [2020-09-25 07:55:28,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:28,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571474700] [2020-09-25 07:55:28,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:28,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:28,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:28,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:28,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:33,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:33,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-25 07:55:33,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:55:33,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:55:33,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:33,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:33,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:33,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 07:55:33,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 07:55:33,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:33,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:33,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:33,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:33,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:33,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:33,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:55:33,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:33,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:33,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:33,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:33,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:33,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:33,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:33,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:33,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:33,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:55:33,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:33,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:55:33,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:33,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:33,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:33,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:33,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 07:55:33,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:33,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 07:55:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:33,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:33,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:33,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 07:55:33,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:33,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 07:55:33,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:33,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:33,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:33,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:55:33,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 07:55:33,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:33,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 07:55:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:33,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:33,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:33,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 07:55:33,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:33,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:55:33,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:33,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 07:55:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:33,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:33,825 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 84 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 07:55:33,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571474700] [2020-09-25 07:55:33,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:33,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:55:33,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518050961] [2020-09-25 07:55:33,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:55:33,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:33,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:55:33,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:55:33,827 INFO L87 Difference]: Start difference. First operand 3732 states and 4404 transitions. Second operand 7 states. [2020-09-25 07:55:35,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:35,982 INFO L93 Difference]: Finished difference Result 7568 states and 8966 transitions. [2020-09-25 07:55:35,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:55:35,983 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-09-25 07:55:35,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:36,002 INFO L225 Difference]: With dead ends: 7568 [2020-09-25 07:55:36,002 INFO L226 Difference]: Without dead ends: 3857 [2020-09-25 07:55:36,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 07:55:36,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3857 states. [2020-09-25 07:55:36,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3857 to 3738. [2020-09-25 07:55:36,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3738 states. [2020-09-25 07:55:36,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3738 states to 3738 states and 4326 transitions. [2020-09-25 07:55:36,112 INFO L78 Accepts]: Start accepts. Automaton has 3738 states and 4326 transitions. Word has length 193 [2020-09-25 07:55:36,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:36,112 INFO L479 AbstractCegarLoop]: Abstraction has 3738 states and 4326 transitions. [2020-09-25 07:55:36,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:55:36,112 INFO L276 IsEmpty]: Start isEmpty. Operand 3738 states and 4326 transitions. [2020-09-25 07:55:36,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 07:55:36,123 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:36,123 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:36,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 07:55:36,124 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:36,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:36,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1664304064, now seen corresponding path program 1 times [2020-09-25 07:55:36,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:36,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124192995] [2020-09-25 07:55:36,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:36,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:36,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:37,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:37,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 07:55:37,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:55:37,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1492 [2020-09-25 07:55:37,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:37,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:37,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:37,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 07:55:37,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 07:55:37,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:37,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:37,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:37,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:37,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:37,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:37,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:55:37,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:37,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:37,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:37,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:37,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:37,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:37,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:37,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:37,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:37,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:55:37,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:37,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 07:55:37,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:37,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:37,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:55:37,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:37,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 07:55:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:37,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:37,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:37,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 07:55:37,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:37,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 07:55:37,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:37,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:37,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:37,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:55:37,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 07:55:37,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:37,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-09-25 07:55:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:37,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:37,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:37,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 07:55:37,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:37,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:55:37,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:37,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:37,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:37,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 07:55:37,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:37,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:38,008 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 92 proven. 13 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 07:55:38,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124192995] [2020-09-25 07:55:38,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:38,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:55:38,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190997515] [2020-09-25 07:55:38,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:55:38,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:38,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:55:38,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:55:38,011 INFO L87 Difference]: Start difference. First operand 3738 states and 4326 transitions. Second operand 7 states. [2020-09-25 07:55:40,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:40,114 INFO L93 Difference]: Finished difference Result 7498 states and 8702 transitions. [2020-09-25 07:55:40,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:55:40,115 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 198 [2020-09-25 07:55:40,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:40,132 INFO L225 Difference]: With dead ends: 7498 [2020-09-25 07:55:40,133 INFO L226 Difference]: Without dead ends: 3782 [2020-09-25 07:55:40,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 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 07:55:40,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3782 states. [2020-09-25 07:55:40,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3782 to 3750. [2020-09-25 07:55:40,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3750 states. [2020-09-25 07:55:40,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3750 states to 3750 states and 4229 transitions. [2020-09-25 07:55:40,240 INFO L78 Accepts]: Start accepts. Automaton has 3750 states and 4229 transitions. Word has length 198 [2020-09-25 07:55:40,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:40,241 INFO L479 AbstractCegarLoop]: Abstraction has 3750 states and 4229 transitions. [2020-09-25 07:55:40,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:55:40,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3750 states and 4229 transitions. [2020-09-25 07:55:40,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-25 07:55:40,252 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:40,253 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:40,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 07:55:40,253 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:40,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:40,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1117172267, now seen corresponding path program 1 times [2020-09-25 07:55:40,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:40,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986656532] [2020-09-25 07:55:40,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:40,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:40,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:40,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:40,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:41,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:45,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:45,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-09-25 07:55:45,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:55:45,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:55:45,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:45,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:45,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:55:45,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 07:55:45,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 07:55:45,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:45,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:45,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:45,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:45,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:45,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:45,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:55:45,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:45,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:45,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:45,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:45,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:45,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:45,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:45,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:45,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:45,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:55:45,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:45,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:55:45,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:45,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:45,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:45,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:45,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:45,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:45,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 07:55:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:45,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:45,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:45,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:55:45,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:45,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:55:45,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:45,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:45,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:45,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:45,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 07:55:45,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:45,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 07:55:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:45,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:45,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:45,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:45,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 07:55:45,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:55:45,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 07:55:45,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:45,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:45,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:45,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:55:45,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 07:55:45,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:45,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-09-25 07:55:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:45,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:45,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:45,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 07:55:45,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:45,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 07:55:45,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:45,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:45,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:45,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:55:45,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 07:55:45,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:45,666 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 126 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 07:55:45,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986656532] [2020-09-25 07:55:45,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:45,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:55:45,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935833583] [2020-09-25 07:55:45,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:55:45,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:45,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:55:45,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:55:45,669 INFO L87 Difference]: Start difference. First operand 3750 states and 4229 transitions. Second operand 7 states.