/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 SequenceOfStatements --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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id2_i5_o5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 18:24:15,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 18:24:15,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 18:24:15,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 18:24:15,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 18:24:15,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 18:24:15,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 18:24:15,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 18:24:15,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 18:24:15,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 18:24:15,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 18:24:15,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 18:24:15,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 18:24:15,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 18:24:15,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 18:24:15,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 18:24:15,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 18:24:15,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 18:24:15,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 18:24:15,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 18:24:15,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 18:24:15,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 18:24:15,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 18:24:15,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 18:24:15,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 18:24:15,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 18:24:15,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 18:24:15,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 18:24:15,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 18:24:15,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 18:24:15,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 18:24:15,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 18:24:15,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 18:24:15,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 18:24:15,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 18:24:15,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 18:24:15,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 18:24:15,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 18:24:15,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 18:24:15,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 18:24:15,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 18:24:15,263 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 [2020-10-12 18:24:15,286 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 18:24:15,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 18:24:15,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 18:24:15,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 18:24:15,288 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 18:24:15,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 18:24:15,289 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 18:24:15,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 18:24:15,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 18:24:15,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 18:24:15,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 18:24:15,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 18:24:15,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 18:24:15,290 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 18:24:15,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 18:24:15,291 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 18:24:15,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 18:24:15,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 18:24:15,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 18:24:15,292 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 18:24:15,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 18:24:15,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 18:24:15,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 18:24:15,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 18:24:15,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 18:24:15,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 18:24:15,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 18:24:15,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 18:24:15,293 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 18:24:15,294 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 -> SequenceOfStatements 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 18:24:15,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 18:24:15,587 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 18:24:15,591 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 18:24:15,592 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 18:24:15,593 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 18:24:15,594 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_i5_o5-2.c [2020-10-12 18:24:15,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee5b81504/921573e4232a46648f15615d146bbf75/FLAGcff01fe35 [2020-10-12 18:24:16,066 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 18:24:16,067 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id2_i5_o5-2.c [2020-10-12 18:24:16,073 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee5b81504/921573e4232a46648f15615d146bbf75/FLAGcff01fe35 [2020-10-12 18:24:16,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee5b81504/921573e4232a46648f15615d146bbf75 [2020-10-12 18:24:16,453 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 18:24:16,455 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 18:24:16,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 18:24:16,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 18:24:16,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 18:24:16,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:24:16" (1/1) ... [2020-10-12 18:24:16,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1225839d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:24:16, skipping insertion in model container [2020-10-12 18:24:16,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:24:16" (1/1) ... [2020-10-12 18:24:16,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 18:24:16,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 18:24:16,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:24:16,710 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 18:24:16,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:24:16,741 INFO L208 MainTranslator]: Completed translation [2020-10-12 18:24:16,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:24:16 WrapperNode [2020-10-12 18:24:16,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 18:24:16,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 18:24:16,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 18:24:16,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 18:24:16,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:24:16" (1/1) ... [2020-10-12 18:24:16,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:24:16" (1/1) ... [2020-10-12 18:24:16,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:24:16" (1/1) ... [2020-10-12 18:24:16,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:24:16" (1/1) ... [2020-10-12 18:24:16,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:24:16" (1/1) ... [2020-10-12 18:24:16,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:24:16" (1/1) ... [2020-10-12 18:24:16,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:24:16" (1/1) ... [2020-10-12 18:24:16,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 18:24:16,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 18:24:16,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 18:24:16,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 18:24:16,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:24:16" (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 [2020-10-12 18:24:16,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 18:24:16,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 18:24:16,911 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-10-12 18:24:16,911 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-10-12 18:24:16,912 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 18:24:16,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 18:24:16,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 18:24:16,912 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-10-12 18:24:16,912 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-10-12 18:24:16,912 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 18:24:16,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 18:24:16,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 18:24:17,094 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 18:24:17,094 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 18:24:17,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:24:17 BoogieIcfgContainer [2020-10-12 18:24:17,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 18:24:17,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 18:24:17,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 18:24:17,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 18:24:17,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:24:16" (1/3) ... [2020-10-12 18:24:17,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a44a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:24:17, skipping insertion in model container [2020-10-12 18:24:17,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:24:16" (2/3) ... [2020-10-12 18:24:17,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a44a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:24:17, skipping insertion in model container [2020-10-12 18:24:17,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:24:17" (3/3) ... [2020-10-12 18:24:17,108 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_i5_o5-2.c [2020-10-12 18:24:17,119 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 18:24:17,127 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 18:24:17,142 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 18:24:17,169 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 18:24:17,169 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 18:24:17,169 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 18:24:17,169 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 18:24:17,169 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 18:24:17,170 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 18:24:17,170 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 18:24:17,170 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 18:24:17,195 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-12 18:24:17,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-12 18:24:17,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:24:17,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:24:17,208 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:24:17,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:24:17,217 INFO L82 PathProgramCache]: Analyzing trace with hash -550894517, now seen corresponding path program 1 times [2020-10-12 18:24:17,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:24:17,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259322436] [2020-10-12 18:24:17,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:24:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:17,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:17,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:17,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 18:24:17,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:17,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-12 18:24:17,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:17,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:24:17,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 18:24:17,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:24:17,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 18:24:17,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:24:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:17,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:17,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:17,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:24:17,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:17,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:24:17,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:17,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:24:17,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:17,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:24:17,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:24:17,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:24:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:17,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:17,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:17,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:24:17,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:17,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 18:24:17,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:17,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:24:17,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:24:17,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:24:17,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:24:17,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:24:17,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259322436] [2020-10-12 18:24:17,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:24:17,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 18:24:17,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955744822] [2020-10-12 18:24:17,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 18:24:17,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:24:17,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 18:24:17,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:24:17,654 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 5 states. [2020-10-12 18:24:17,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:24:17,738 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-10-12 18:24:17,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 18:24:17,744 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-12 18:24:17,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:24:17,753 INFO L225 Difference]: With dead ends: 36 [2020-10-12 18:24:17,753 INFO L226 Difference]: Without dead ends: 24 [2020-10-12 18:24:17,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 18:24:17,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-12 18:24:17,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-12 18:24:17,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-12 18:24:17,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-12 18:24:17,801 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 13 [2020-10-12 18:24:17,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:24:17,802 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-12 18:24:17,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 18:24:17,802 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-12 18:24:17,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-12 18:24:17,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:24:17,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:24:17,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 18:24:17,806 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:24:17,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:24:17,806 INFO L82 PathProgramCache]: Analyzing trace with hash 40504409, now seen corresponding path program 1 times [2020-10-12 18:24:17,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:24:17,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352330638] [2020-10-12 18:24:17,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:24:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:17,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:17,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:17,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 18:24:17,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:17,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-12 18:24:17,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:17,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:24:17,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 18:24:17,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:24:17,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:24:17,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:24:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:17,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:17,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:17,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:24:17,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:17,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:24:17,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:17,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:24:17,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:17,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:24:17,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:24:17,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:24:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:18,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:18,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:18,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 18:24:18,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:18,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-12 18:24:18,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:18,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:24:18,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:24:18,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:24:18,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:24:18,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:18,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:18,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:18,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:24:18,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:18,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 18:24:18,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:18,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:24:18,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:18,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:24:18,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:18,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:24:18,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352330638] [2020-10-12 18:24:18,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:24:18,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 18:24:18,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773792429] [2020-10-12 18:24:18,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 18:24:18,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:24:18,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 18:24:18,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:24:18,139 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 7 states. [2020-10-12 18:24:18,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:24:18,219 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2020-10-12 18:24:18,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 18:24:18,220 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-12 18:24:18,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:24:18,221 INFO L225 Difference]: With dead ends: 33 [2020-10-12 18:24:18,222 INFO L226 Difference]: Without dead ends: 29 [2020-10-12 18:24:18,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:24:18,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-12 18:24:18,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-10-12 18:24:18,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-12 18:24:18,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-10-12 18:24:18,231 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19 [2020-10-12 18:24:18,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:24:18,232 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-10-12 18:24:18,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 18:24:18,232 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-10-12 18:24:18,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-12 18:24:18,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:24:18,234 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:24:18,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 18:24:18,235 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:24:18,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:24:18,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1029702107, now seen corresponding path program 1 times [2020-10-12 18:24:18,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:24:18,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997025285] [2020-10-12 18:24:18,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:24:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:18,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:18,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:18,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 18:24:18,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:18,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 18:24:18,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:18,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:24:18,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 18:24:18,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:24:18,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:24:18,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:24:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:18,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:18,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:18,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:24:18,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:18,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:24:18,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:18,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:24:18,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:18,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:24:18,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:18,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:24:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:18,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:18,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:18,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:24:18,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:18,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 18:24:18,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:18,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:24:18,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:24:18,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:24:18,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:18,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:18,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:18,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:18,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 18:24:18,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:18,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 18:24:18,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:18,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:24:18,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:18,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 18:24:18,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:18,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:18,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:18,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:18,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:24:18,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:18,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:24:18,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:18,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:24:18,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:18,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:24:18,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:18,581 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 18:24:18,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997025285] [2020-10-12 18:24:18,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:24:18,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 18:24:18,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384904747] [2020-10-12 18:24:18,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 18:24:18,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:24:18,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 18:24:18,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 18:24:18,584 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 8 states. [2020-10-12 18:24:18,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:24:18,670 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-10-12 18:24:18,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 18:24:18,671 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-10-12 18:24:18,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:24:18,672 INFO L225 Difference]: With dead ends: 39 [2020-10-12 18:24:18,672 INFO L226 Difference]: Without dead ends: 35 [2020-10-12 18:24:18,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:24:18,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-12 18:24:18,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2020-10-12 18:24:18,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-12 18:24:18,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-10-12 18:24:18,681 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 25 [2020-10-12 18:24:18,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:24:18,681 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-10-12 18:24:18,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 18:24:18,681 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-10-12 18:24:18,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 18:24:18,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:24:18,683 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] [2020-10-12 18:24:18,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 18:24:18,683 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:24:18,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:24:18,684 INFO L82 PathProgramCache]: Analyzing trace with hash -559715991, now seen corresponding path program 1 times [2020-10-12 18:24:18,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:24:18,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68798399] [2020-10-12 18:24:18,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:24:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:18,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:18,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:18,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 18:24:18,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:18,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-12 18:24:18,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:18,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:24:18,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 18:24:18,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 18:24:18,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:18,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:24:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:18,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:18,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:18,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:24:18,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:18,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:24:18,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:18,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:24:18,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:18,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:24:18,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:18,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:24:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:18,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:18,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:18,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 18:24:18,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:18,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 18:24:18,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:18,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:24:18,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:24:18,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 18:24:18,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:18,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:18,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:18,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:18,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:24:18,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:18,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 18:24:18,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:24:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:24:18,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:18,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:19,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:19,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:19,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 18:24:19,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:19,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 18:24:19,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:19,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:24:19,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:19,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 18:24:19,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:24:19,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:19,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:19,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:19,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:24:19,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:19,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:24:19,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:19,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:24:19,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:19,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:24:19,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:24:19,115 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 18:24:19,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68798399] [2020-10-12 18:24:19,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:24:19,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 18:24:19,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390434665] [2020-10-12 18:24:19,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 18:24:19,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:24:19,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 18:24:19,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:24:19,118 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 10 states. [2020-10-12 18:24:19,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:24:19,254 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2020-10-12 18:24:19,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 18:24:19,255 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-10-12 18:24:19,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:24:19,256 INFO L225 Difference]: With dead ends: 45 [2020-10-12 18:24:19,256 INFO L226 Difference]: Without dead ends: 41 [2020-10-12 18:24:19,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:24:19,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-12 18:24:19,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2020-10-12 18:24:19,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-12 18:24:19,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-10-12 18:24:19,264 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 31 [2020-10-12 18:24:19,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:24:19,265 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-10-12 18:24:19,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 18:24:19,265 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-10-12 18:24:19,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 18:24:19,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:24:19,267 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:24:19,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 18:24:19,267 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:24:19,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:24:19,268 INFO L82 PathProgramCache]: Analyzing trace with hash 2003326827, now seen corresponding path program 2 times [2020-10-12 18:24:19,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:24:19,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238522262] [2020-10-12 18:24:19,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:24:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:19,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:19,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:19,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-12 18:24:19,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:19,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-12 18:24:19,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:19,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:24:19,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 18:24:19,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:24:19,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:19,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:24:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:19,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:19,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:19,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:24:19,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:19,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:24:19,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:19,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:24:19,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:19,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:24:19,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:19,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:24:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:19,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:19,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:19,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 18:24:19,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:19,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-12 18:24:19,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:19,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:24:19,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:24:19,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:24:19,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:19,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:19,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:19,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:19,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 18:24:19,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:19,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-12 18:24:19,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:19,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:24:19,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:19,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 18:24:19,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:19,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:19,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:19,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:19,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:24:19,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:19,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 18:24:19,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:19,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:24:19,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:19,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:24:19,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:19,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:19,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:19,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:19,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 18:24:19,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:19,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 18:24:19,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:19,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:24:19,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:19,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 18:24:19,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:19,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:19,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:19,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:19,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:24:19,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:19,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:24:19,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:19,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:24:19,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:19,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:24:19,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:24:19,833 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 18:24:19,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238522262] [2020-10-12 18:24:19,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:24:19,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 18:24:19,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953111306] [2020-10-12 18:24:19,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:24:19,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:24:19,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:24:19,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:24:19,836 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 11 states. [2020-10-12 18:24:19,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:24:19,952 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2020-10-12 18:24:19,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 18:24:19,953 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-10-12 18:24:19,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:24:19,955 INFO L225 Difference]: With dead ends: 51 [2020-10-12 18:24:19,955 INFO L226 Difference]: Without dead ends: 47 [2020-10-12 18:24:19,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-12 18:24:19,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-12 18:24:19,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2020-10-12 18:24:19,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-12 18:24:19,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-10-12 18:24:19,965 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 37 [2020-10-12 18:24:19,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:24:19,965 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-10-12 18:24:19,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:24:19,965 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-10-12 18:24:19,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-12 18:24:19,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:24:19,967 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:24:19,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 18:24:19,968 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:24:19,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:24:19,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1197899385, now seen corresponding path program 2 times [2020-10-12 18:24:19,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:24:19,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694331032] [2020-10-12 18:24:19,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:24:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:19,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:20,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:20,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 18:24:20,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:20,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-12 18:24:20,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:20,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:24:20,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-12 18:24:20,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:24:20,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:20,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:24:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:20,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:20,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:20,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:24:20,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:20,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:24:20,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:20,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:24:20,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:20,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:24:20,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:24:20,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:24:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:20,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:20,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:20,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 18:24:20,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:20,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-12 18:24:20,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:20,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:24:20,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:20,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 18:24:20,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:24:20,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:20,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:20,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:20,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 18:24:20,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:20,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-12 18:24:20,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:20,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:24:20,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:20,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 18:24:20,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:20,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:20,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:20,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:20,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 18:24:20,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:20,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 18:24:20,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:20,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:24:20,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:20,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 18:24:20,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:24:20,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:20,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:20,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:20,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:24:20,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:20,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 18:24:20,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:20,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:24:20,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:20,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 18:24:20,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:24:20,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:20,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:20,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:20,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 18:24:20,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:20,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 18:24:20,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:20,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:24:20,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:20,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:24:20,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:20,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:20,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:20,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:20,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:24:20,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:20,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:24:20,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:20,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:24:20,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:20,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:24:20,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:24:20,880 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-12 18:24:20,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694331032] [2020-10-12 18:24:20,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:24:20,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 18:24:20,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571796322] [2020-10-12 18:24:20,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 18:24:20,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:24:20,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 18:24:20,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:24:20,882 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 15 states. [2020-10-12 18:24:20,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:24:20,969 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2020-10-12 18:24:20,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 18:24:20,970 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2020-10-12 18:24:20,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:24:20,971 INFO L225 Difference]: With dead ends: 57 [2020-10-12 18:24:20,972 INFO L226 Difference]: Without dead ends: 53 [2020-10-12 18:24:20,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:24:20,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-12 18:24:20,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2020-10-12 18:24:20,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-12 18:24:20,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-10-12 18:24:20,980 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 43 [2020-10-12 18:24:20,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:24:20,980 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-10-12 18:24:20,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 18:24:20,981 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-10-12 18:24:20,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-12 18:24:20,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:24:20,982 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:24:20,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 18:24:20,982 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:24:20,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:24:20,983 INFO L82 PathProgramCache]: Analyzing trace with hash 706413819, now seen corresponding path program 3 times [2020-10-12 18:24:20,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:24:20,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951388122] [2020-10-12 18:24:20,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:24:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:20,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:21,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:21,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:21,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 18:24:21,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:24:21,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-12 18:24:21,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:21,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:24:21,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 18:24:21,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 18:24:21,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:24:21,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:24:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:21,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:21,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:21,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:24:21,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:21,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:24:21,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:21,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:24:21,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:21,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:24:21,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:21,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:24:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:21,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:21,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:21,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:21,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-12 18:24:21,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:24:21,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-12 18:24:21,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:21,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:24:21,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:24:21,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 18:24:21,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:21,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:21,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:21,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:21,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 18:24:21,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:21,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-12 18:24:21,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:21,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:24:21,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:21,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 18:24:21,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:21,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:21,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:22,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:22,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 18:24:22,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:22,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-12 18:24:22,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:22,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:24:22,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:22,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 18:24:22,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:22,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:22,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:22,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:22,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 18:24:22,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:22,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-12 18:24:22,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:22,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:24:22,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:22,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 18:24:22,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:24:22,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:22,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:22,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:22,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:24:22,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:22,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 18:24:22,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:22,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:24:22,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:24:22,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:22,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:22,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:22,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:22,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 18:24:22,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:22,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 18:24:22,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:24:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 18:24:22,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:24:22,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:22,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:22,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:22,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:24:22,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:22,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:24:22,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:22,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:24:22,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:22,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:24:22,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:24:22,348 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-12 18:24:22,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951388122] [2020-10-12 18:24:22,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:24:22,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 18:24:22,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110334572] [2020-10-12 18:24:22,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 18:24:22,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:24:22,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 18:24:22,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-12 18:24:22,351 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 12 states. [2020-10-12 18:24:22,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:24:22,546 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-10-12 18:24:22,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 18:24:22,546 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-12 18:24:22,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:24:22,548 INFO L225 Difference]: With dead ends: 75 [2020-10-12 18:24:22,548 INFO L226 Difference]: Without dead ends: 45 [2020-10-12 18:24:22,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:24:22,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-12 18:24:22,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2020-10-12 18:24:22,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-12 18:24:22,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-10-12 18:24:22,556 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 49 [2020-10-12 18:24:22,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:24:22,556 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-10-12 18:24:22,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 18:24:22,556 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-10-12 18:24:22,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 18:24:22,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:24:22,557 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:24:22,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 18:24:22,558 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:24:22,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:24:22,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1492956279, now seen corresponding path program 3 times [2020-10-12 18:24:22,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:24:22,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531320145] [2020-10-12 18:24:22,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:24:22,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:22,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:22,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:22,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:22,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 18:24:22,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:24:22,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-12 18:24:22,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:22,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:24:22,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 18:24:22,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 18:24:22,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:22,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:24:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:22,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:22,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:22,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:24:22,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:22,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:24:22,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:22,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:24:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:24:22,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:22,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:24:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:22,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:22,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:23,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:23,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-12 18:24:23,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:24:23,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-12 18:24:23,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:23,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:24:23,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:24:23,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 18:24:23,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:23,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:23,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:23,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:23,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-12 18:24:23,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:23,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-12 18:24:23,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:23,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:24:23,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:23,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 18:24:23,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:24:23,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:23,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:23,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:23,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 18:24:23,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:23,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-12 18:24:23,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:23,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:24:23,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:23,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 18:24:23,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:24:23,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:23,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:23,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:23,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 18:24:23,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:23,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-12 18:24:23,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:23,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:24:23,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:23,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 18:24:23,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:24:23,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:23,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:23,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:23,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 18:24:23,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:23,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 18:24:23,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:23,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:24:23,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:23,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 18:24:23,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:23,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:23,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:23,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:23,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:24:23,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:23,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 18:24:23,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:23,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:24:23,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:23,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:24:23,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:24:23,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:23,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:23,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:23,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 18:24:23,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:23,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 18:24:23,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:23,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:24:23,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:23,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 18:24:23,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:24:23,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:24,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:24,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:24,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:24:24,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:24,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:24:24,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:24,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:24:24,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:24,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:24:24,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:24:24,041 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-12 18:24:24,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531320145] [2020-10-12 18:24:24,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:24:24,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 18:24:24,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409521377] [2020-10-12 18:24:24,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 18:24:24,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:24:24,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 18:24:24,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:24:24,045 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 14 states. [2020-10-12 18:24:24,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:24:24,247 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2020-10-12 18:24:24,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 18:24:24,249 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-10-12 18:24:24,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:24:24,250 INFO L225 Difference]: With dead ends: 45 [2020-10-12 18:24:24,250 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 18:24:24,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2020-10-12 18:24:24,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 18:24:24,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 18:24:24,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 18:24:24,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 18:24:24,254 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2020-10-12 18:24:24,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:24:24,254 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 18:24:24,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 18:24:24,255 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 18:24:24,255 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 18:24:24,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 18:24:24,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 18:24:24,356 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-12 18:24:24,356 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-12 18:24:24,356 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (= id2_~x |id2_#in~x|) [2020-10-12 18:24:24,356 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-10-12 18:24:24,356 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-10-12 18:24:24,357 INFO L268 CegarLoopResult]: For program point id2EXIT(lines 12 15) no Hoare annotation was computed. [2020-10-12 18:24:24,357 INFO L271 CegarLoopResult]: At program point id2ENTRY(lines 12 15) the Hoare annotation is: true [2020-10-12 18:24:24,357 INFO L268 CegarLoopResult]: For program point id2FINAL(lines 12 15) no Hoare annotation was computed. [2020-10-12 18:24:24,357 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-12 18:24:24,357 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-12 18:24:24,357 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-12 18:24:24,357 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-12 18:24:24,358 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2020-10-12 18:24:24,359 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 17 23) the Hoare annotation is: true [2020-10-12 18:24:24,359 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 17 23) no Hoare annotation was computed. [2020-10-12 18:24:24,359 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-10-12 18:24:24,359 INFO L268 CegarLoopResult]: For program point L20(lines 20 22) no Hoare annotation was computed. [2020-10-12 18:24:24,360 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= 5 main_~input~0) [2020-10-12 18:24:24,360 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-12 18:24:24,360 INFO L268 CegarLoopResult]: For program point L20-2(lines 17 23) no Hoare annotation was computed. [2020-10-12 18:24:24,360 INFO L268 CegarLoopResult]: For program point idFINAL(lines 7 10) no Hoare annotation was computed. [2020-10-12 18:24:24,360 INFO L268 CegarLoopResult]: For program point idEXIT(lines 7 10) no Hoare annotation was computed. [2020-10-12 18:24:24,360 INFO L264 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: (and (<= id_~x |id_#in~x|) (<= |id_#in~x| id_~x)) [2020-10-12 18:24:24,360 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-12 18:24:24,361 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-10-12 18:24:24,361 INFO L271 CegarLoopResult]: At program point idENTRY(lines 7 10) the Hoare annotation is: true [2020-10-12 18:24:24,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 06:24:24 BoogieIcfgContainer [2020-10-12 18:24:24,380 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 18:24:24,385 INFO L168 Benchmark]: Toolchain (without parser) took 7927.66 ms. Allocated memory was 138.9 MB in the beginning and 325.6 MB in the end (delta: 186.6 MB). Free memory was 102.3 MB in the beginning and 147.9 MB in the end (delta: -45.7 MB). Peak memory consumption was 141.0 MB. Max. memory is 7.1 GB. [2020-10-12 18:24:24,387 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 18:24:24,388 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.18 ms. Allocated memory is still 138.9 MB. Free memory was 102.1 MB in the beginning and 92.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-10-12 18:24:24,389 INFO L168 Benchmark]: Boogie Preprocessor took 110.42 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 92.7 MB in the beginning and 180.4 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-10-12 18:24:24,390 INFO L168 Benchmark]: RCFGBuilder took 245.03 ms. Allocated memory is still 201.3 MB. Free memory was 180.4 MB in the beginning and 168.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-10-12 18:24:24,392 INFO L168 Benchmark]: TraceAbstraction took 7280.16 ms. Allocated memory was 201.3 MB in the beginning and 325.6 MB in the end (delta: 124.3 MB). Free memory was 167.5 MB in the beginning and 147.9 MB in the end (delta: 19.6 MB). Peak memory consumption was 143.9 MB. Max. memory is 7.1 GB. [2020-10-12 18:24:24,399 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 286.18 ms. Allocated memory is still 138.9 MB. Free memory was 102.1 MB in the beginning and 92.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.42 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 92.7 MB in the beginning and 180.4 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 245.03 ms. Allocated memory is still 201.3 MB. Free memory was 180.4 MB in the beginning and 168.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7280.16 ms. Allocated memory was 201.3 MB in the beginning and 325.6 MB in the end (delta: 124.3 MB). Free memory was 167.5 MB in the beginning and 147.9 MB in the end (delta: 19.6 MB). Peak memory consumption was 143.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.0s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 173 SDtfs, 111 SDslu, 1086 SDs, 0 SdLazy, 557 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 184 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 43 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 13 PreInvPairs, 13 NumberOfFragments, 19 HoareAnnotationTreeSize, 13 FomulaSimplifications, 14 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 39 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 272 NumberOfCodeBlocks, 272 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 264 ConstructedInterpolants, 0 QuantifiedInterpolants, 27390 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 141/180 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...