/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:16:01,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:16:01,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:16:02,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:16:02,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:16:02,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:16:02,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:16:02,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:16:02,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:16:02,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:16:02,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:16:02,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:16:02,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:16:02,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:16:02,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:16:02,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:16:02,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:16:02,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:16:02,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:16:02,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:16:02,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:16:02,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:16:02,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:16:02,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:16:02,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:16:02,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:16:02,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:16:02,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:16:02,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:16:02,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:16:02,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:16:02,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:16:02,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:16:02,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:16:02,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:16:02,119 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:16:02,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:16:02,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:16:02,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:16:02,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:16:02,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:16:02,126 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 18:16:02,173 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:16:02,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:16:02,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:16:02,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:16:02,176 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:16:02,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:16:02,177 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:16:02,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:16:02,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:16:02,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:16:02,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:16:02,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:16:02,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:16:02,179 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:16:02,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:16:02,180 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:16:02,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:16:02,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:16:02,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:16:02,181 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:16:02,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:16:02,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:16:02,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:16:02,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:16:02,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:16:02,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:16:02,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:16:02,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:16:02,183 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:16:02,183 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:16:02,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:16:02,655 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:16:02,663 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:16:02,668 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:16:02,669 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:16:02,670 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c [2020-09-24 18:16:02,753 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7e976610/f18e7790a0594470a0573dd02c6432df/FLAGb06c4ae3b [2020-09-24 18:16:03,402 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:16:03,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c [2020-09-24 18:16:03,411 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7e976610/f18e7790a0594470a0573dd02c6432df/FLAGb06c4ae3b [2020-09-24 18:16:03,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7e976610/f18e7790a0594470a0573dd02c6432df [2020-09-24 18:16:03,443 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:16:03,449 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:16:03,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:16:03,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:16:03,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:16:03,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:16:03" (1/1) ... [2020-09-24 18:16:03,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cc521e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:03, skipping insertion in model container [2020-09-24 18:16:03,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:16:03" (1/1) ... [2020-09-24 18:16:03,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:16:03,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:16:03,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:16:03,789 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:16:03,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:16:03,838 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:16:03,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:03 WrapperNode [2020-09-24 18:16:03,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:16:03,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:16:03,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:16:03,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:16:03,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:03" (1/1) ... [2020-09-24 18:16:03,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:03" (1/1) ... [2020-09-24 18:16:03,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:03" (1/1) ... [2020-09-24 18:16:03,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:03" (1/1) ... [2020-09-24 18:16:03,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:03" (1/1) ... [2020-09-24 18:16:03,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:03" (1/1) ... [2020-09-24 18:16:03,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:03" (1/1) ... [2020-09-24 18:16:03,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:16:03,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:16:03,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:16:03,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:16:03,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:16:04,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:16:04,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:16:04,054 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 18:16:04,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 18:16:04,054 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-24 18:16:04,055 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:16:04,055 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-24 18:16:04,055 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 18:16:04,055 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 18:16:04,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:16:04,056 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 18:16:04,056 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 18:16:04,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 18:16:04,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:16:04,057 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 18:16:04,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 18:16:04,057 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:16:04,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 18:16:04,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-24 18:16:04,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:16:04,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:16:04,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:16:04,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 18:16:04,434 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:16:04,435 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 18:16:04,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:16:04 BoogieIcfgContainer [2020-09-24 18:16:04,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:16:04,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:16:04,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:16:04,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:16:04,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:16:03" (1/3) ... [2020-09-24 18:16:04,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28fc3abd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:16:04, skipping insertion in model container [2020-09-24 18:16:04,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:03" (2/3) ... [2020-09-24 18:16:04,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28fc3abd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:16:04, skipping insertion in model container [2020-09-24 18:16:04,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:16:04" (3/3) ... [2020-09-24 18:16:04,453 INFO L109 eAbstractionObserver]: Analyzing ICFG elimination_max_rec_onepoint.c [2020-09-24 18:16:04,466 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:16:04,477 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:16:04,500 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:16:04,529 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:16:04,530 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:16:04,530 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:16:04,530 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:16:04,530 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:16:04,530 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:16:04,530 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:16:04,531 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:16:04,560 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2020-09-24 18:16:04,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 18:16:04,570 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:04,571 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:16:04,572 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:04,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:04,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1228919024, now seen corresponding path program 1 times [2020-09-24 18:16:04,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:04,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395001065] [2020-09-24 18:16:04,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:04,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:05,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:05,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 18:16:05,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:05,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-09-24 18:16:05,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:05,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:16:05,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 18:16:05,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:16:05,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:16:05,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:05,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:05,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:05,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:16:05,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:05,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:16:05,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:05,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:05,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:05,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 18:16:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:05,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:05,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:05,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:05,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:05,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:16:05,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:05,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:05,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:05,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:05,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:05,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 18:16:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:05,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:05,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:05,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:05,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:05,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:16:05,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:05,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:05,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:05,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:05,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:05,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 18:16:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:05,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:05,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:05,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:16:05,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:05,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:16:05,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:05,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:05,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:05,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:05,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:05,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 18:16:05,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395001065] [2020-09-24 18:16:05,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:05,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 18:16:05,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412816524] [2020-09-24 18:16:05,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 18:16:05,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:05,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 18:16:05,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:16:05,698 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 10 states. [2020-09-24 18:16:06,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:06,687 INFO L93 Difference]: Finished difference Result 221 states and 257 transitions. [2020-09-24 18:16:06,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:16:06,689 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-09-24 18:16:06,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:06,707 INFO L225 Difference]: With dead ends: 221 [2020-09-24 18:16:06,708 INFO L226 Difference]: Without dead ends: 138 [2020-09-24 18:16:06,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-09-24 18:16:06,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-24 18:16:06,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 122. [2020-09-24 18:16:06,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-24 18:16:06,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2020-09-24 18:16:06,826 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 40 [2020-09-24 18:16:06,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:06,828 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2020-09-24 18:16:06,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 18:16:06,829 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2020-09-24 18:16:06,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 18:16:06,832 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:06,832 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:16:06,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:16:06,833 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:06,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:06,833 INFO L82 PathProgramCache]: Analyzing trace with hash -2013393660, now seen corresponding path program 1 times [2020-09-24 18:16:06,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:06,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191380990] [2020-09-24 18:16:06,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:06,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:06,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:09,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:09,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 18:16:09,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:16:09,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2524 [2020-09-24 18:16:09,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:09,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 18:16:09,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-24 18:16:09,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 18:16:09,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:16:09,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:09,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:09,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:09,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:16:09,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:09,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:16:09,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:09,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:09,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:09,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:09,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:09,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 18:16:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:09,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:09,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:09,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:09,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:09,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:16:09,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:09,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:09,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:09,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:09,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 18:16:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:09,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:09,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:09,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:09,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:09,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:16:09,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:09,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:09,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:09,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:09,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:09,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 18:16:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:09,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:09,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:09,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:16:09,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:09,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:16:09,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:09,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:16:09,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:09,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:16:09,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:09,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-24 18:16:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:09,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:09,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:09,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:16:09,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:09,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:16:09,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:09,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:09,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:09,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 18:16:09,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:09,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 18:16:09,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191380990] [2020-09-24 18:16:09,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:09,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-24 18:16:09,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741854916] [2020-09-24 18:16:09,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 18:16:09,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:09,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 18:16:09,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-24 18:16:09,694 INFO L87 Difference]: Start difference. First operand 122 states and 132 transitions. Second operand 13 states. [2020-09-24 18:16:10,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:10,562 INFO L93 Difference]: Finished difference Result 128 states and 137 transitions. [2020-09-24 18:16:10,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 18:16:10,563 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-09-24 18:16:10,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:10,565 INFO L225 Difference]: With dead ends: 128 [2020-09-24 18:16:10,565 INFO L226 Difference]: Without dead ends: 108 [2020-09-24 18:16:10,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2020-09-24 18:16:10,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-24 18:16:10,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-09-24 18:16:10,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-24 18:16:10,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 116 transitions. [2020-09-24 18:16:10,581 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 116 transitions. Word has length 52 [2020-09-24 18:16:10,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:10,582 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 116 transitions. [2020-09-24 18:16:10,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 18:16:10,582 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 116 transitions. [2020-09-24 18:16:10,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-24 18:16:10,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:10,585 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:16:10,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:16:10,585 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:10,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:10,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1709597342, now seen corresponding path program 1 times [2020-09-24 18:16:10,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:10,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438251555] [2020-09-24 18:16:10,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:10,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:10,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:13,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:13,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 18:16:13,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:16:13,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3262 [2020-09-24 18:16:13,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:13,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:16:13,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 18:16:13,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 18:16:13,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-09-24 18:16:14,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:14,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:14,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:14,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:16:14,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:14,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:16:14,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:14,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:14,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:14,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:14,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:14,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 18:16:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:14,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:14,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:14,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:14,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:14,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:16:14,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:14,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:14,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:14,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:14,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:14,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 18:16:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:14,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:14,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:14,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:14,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:14,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:16:14,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:14,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:14,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:14,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:14,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:14,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 18:16:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:14,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:14,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:14,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:16:14,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:14,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:16:14,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:14,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:14,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:14,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:14,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:14,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 18:16:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:14,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:14,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:14,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:14,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:14,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:16:14,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:14,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:16:14,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:14,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:16:14,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:14,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-24 18:16:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:14,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:14,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:14,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:14,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:14,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:16:14,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:14,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:14,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:14,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:16:14,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:14,198 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 18:16:14,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438251555] [2020-09-24 18:16:14,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:16:14,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 18:16:14,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969974687] [2020-09-24 18:16:14,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 18:16:14,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:14,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 18:16:14,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-09-24 18:16:14,202 INFO L87 Difference]: Start difference. First operand 108 states and 116 transitions. Second operand 13 states. [2020-09-24 18:16:15,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:15,301 INFO L93 Difference]: Finished difference Result 189 states and 211 transitions. [2020-09-24 18:16:15,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 18:16:15,301 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-09-24 18:16:15,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:15,305 INFO L225 Difference]: With dead ends: 189 [2020-09-24 18:16:15,305 INFO L226 Difference]: Without dead ends: 187 [2020-09-24 18:16:15,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2020-09-24 18:16:15,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-09-24 18:16:15,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 151. [2020-09-24 18:16:15,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-09-24 18:16:15,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 167 transitions. [2020-09-24 18:16:15,347 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 167 transitions. Word has length 67 [2020-09-24 18:16:15,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:15,347 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 167 transitions. [2020-09-24 18:16:15,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 18:16:15,348 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 167 transitions. [2020-09-24 18:16:15,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-24 18:16:15,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:15,353 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:16:15,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:16:15,353 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:15,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:15,357 INFO L82 PathProgramCache]: Analyzing trace with hash 587834366, now seen corresponding path program 1 times [2020-09-24 18:16:15,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:15,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696042057] [2020-09-24 18:16:15,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:15,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:15,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:15,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:20,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:20,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 18:16:20,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:16:20,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 18:16:20,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:20,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:16:20,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-24 18:16:20,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 18:16:20,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:20,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:20,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:20,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:20,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:16:20,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:20,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:16:20,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:20,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:20,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 18:16:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:20,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:20,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:20,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:20,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:20,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:16:20,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:20,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:20,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:20,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:20,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:16:20,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 18:16:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:20,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:20,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:20,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:20,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:20,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:16:20,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:20,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:20,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:20,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:20,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:20,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 18:16:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:20,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:20,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:20,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:16:20,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:20,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:16:20,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:20,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:16:20,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:20,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:16:20,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:20,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 18:16:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:20,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:20,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:20,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:20,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:20,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:16:20,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:20,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:20,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:20,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:16:20,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:20,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-24 18:16:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:20,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:20,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:20,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:20,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:20,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:16:20,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:20,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:20,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:20,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:16:20,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:20,624 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 18:16:20,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696042057] [2020-09-24 18:16:20,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:20,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 18:16:20,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428110453] [2020-09-24 18:16:20,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 18:16:20,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:20,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 18:16:20,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:16:20,627 INFO L87 Difference]: Start difference. First operand 151 states and 167 transitions. Second operand 11 states. [2020-09-24 18:16:21,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:21,116 INFO L93 Difference]: Finished difference Result 206 states and 227 transitions. [2020-09-24 18:16:21,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:16:21,117 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-09-24 18:16:21,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:21,119 INFO L225 Difference]: With dead ends: 206 [2020-09-24 18:16:21,119 INFO L226 Difference]: Without dead ends: 100 [2020-09-24 18:16:21,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-09-24 18:16:21,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-24 18:16:21,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-09-24 18:16:21,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-24 18:16:21,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2020-09-24 18:16:21,144 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 67 [2020-09-24 18:16:21,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:21,145 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2020-09-24 18:16:21,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 18:16:21,146 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2020-09-24 18:16:21,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 18:16:21,153 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:21,155 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:16:21,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:16:21,155 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:21,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:21,156 INFO L82 PathProgramCache]: Analyzing trace with hash 687369648, now seen corresponding path program 1 times [2020-09-24 18:16:21,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:21,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941039893] [2020-09-24 18:16:21,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:21,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:21,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:21,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:26,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:26,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-24 18:16:26,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:16:26,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 18:16:26,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:26,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:16:26,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-24 18:16:26,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 18:16:26,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:26,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:26,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:26,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:26,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:16:26,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:26,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:16:26,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:26,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:26,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:26,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:26,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:26,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 18:16:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:26,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:26,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:26,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:26,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:26,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:16:26,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:26,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:26,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:26,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:26,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:26,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 18:16:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:26,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:26,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:26,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:26,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:26,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:16:26,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:26,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:26,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:26,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 18:16:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:26,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:26,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:26,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:16:26,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:26,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:16:26,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:26,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:16:26,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:26,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:16:26,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:26,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 18:16:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:26,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:26,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:26,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:26,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:26,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:16:26,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:26,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:26,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:26,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:16:26,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:26,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-24 18:16:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:26,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:26,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:26,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:26,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:26,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:16:26,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:26,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:26,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:26,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:16:26,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:26,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-24 18:16:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:26,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:26,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:26,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:16:26,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:26,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 18:16:26,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:26,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:26,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:26,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 18:16:26,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:26,645 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 18:16:26,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941039893] [2020-09-24 18:16:26,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:16:26,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 18:16:26,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832249124] [2020-09-24 18:16:26,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 18:16:26,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:26,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 18:16:26,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-09-24 18:16:26,651 INFO L87 Difference]: Start difference. First operand 100 states and 106 transitions. Second operand 15 states. [2020-09-24 18:16:27,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:27,555 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2020-09-24 18:16:27,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 18:16:27,556 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 79 [2020-09-24 18:16:27,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:27,557 INFO L225 Difference]: With dead ends: 104 [2020-09-24 18:16:27,557 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 18:16:27,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2020-09-24 18:16:27,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 18:16:27,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 18:16:27,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 18:16:27,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 18:16:27,562 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 79 [2020-09-24 18:16:27,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:27,563 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 18:16:27,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 18:16:27,563 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 18:16:27,563 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 18:16:27,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:16:27,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 18:16:27,951 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-09-24 18:16:28,263 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 18:16:28,264 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 18:16:28,264 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 18:16:28,264 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-24 18:16:28,264 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:16:28,265 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:16:28,265 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 18:16:28,265 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 18:16:28,265 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 18:16:28,265 INFO L271 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 5 7) the Hoare annotation is: true [2020-09-24 18:16:28,265 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 18:16:28,266 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-24 18:16:28,266 INFO L268 CegarLoopResult]: For program point L6-3(lines 5 7) no Hoare annotation was computed. [2020-09-24 18:16:28,266 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2020-09-24 18:16:28,266 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 38 52) no Hoare annotation was computed. [2020-09-24 18:16:28,266 INFO L268 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2020-09-24 18:16:28,266 INFO L264 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= main_~ai~1 main_~ax~1) (= main_~ai~1 0) (= (select |#memory_int| |main_#t~malloc10.base|) .cse0))) [2020-09-24 18:16:28,267 INFO L268 CegarLoopResult]: For program point L48-1(line 48) no Hoare annotation was computed. [2020-09-24 18:16:28,267 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-24 18:16:28,267 INFO L268 CegarLoopResult]: For program point L46-1(line 46) no Hoare annotation was computed. [2020-09-24 18:16:28,267 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 38 52) no Hoare annotation was computed. [2020-09-24 18:16:28,267 INFO L264 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-09-24 18:16:28,267 INFO L268 CegarLoopResult]: For program point L46-2(line 46) no Hoare annotation was computed. [2020-09-24 18:16:28,267 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-09-24 18:16:28,268 INFO L264 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-09-24 18:16:28,268 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-09-24 18:16:28,268 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 38 52) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-09-24 18:16:28,268 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-09-24 18:16:28,268 INFO L268 CegarLoopResult]: For program point L47-1(line 47) no Hoare annotation was computed. [2020-09-24 18:16:28,268 INFO L264 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= (select |#memory_int| |main_#t~malloc10.base|) .cse0))) [2020-09-24 18:16:28,269 INFO L268 CegarLoopResult]: For program point L47-2(line 47) no Hoare annotation was computed. [2020-09-24 18:16:28,269 INFO L268 CegarLoopResult]: For program point L45-1(line 45) no Hoare annotation was computed. [2020-09-24 18:16:28,269 INFO L264 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-09-24 18:16:28,269 INFO L268 CegarLoopResult]: For program point L45-2(line 45) no Hoare annotation was computed. [2020-09-24 18:16:28,269 INFO L268 CegarLoopResult]: For program point L43-1(line 43) no Hoare annotation was computed. [2020-09-24 18:16:28,269 INFO L268 CegarLoopResult]: For program point L45-3(line 45) no Hoare annotation was computed. [2020-09-24 18:16:28,270 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-24 18:16:28,270 INFO L268 CegarLoopResult]: For program point L41-1(line 41) no Hoare annotation was computed. [2020-09-24 18:16:28,270 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-09-24 18:16:28,270 INFO L268 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed. [2020-09-24 18:16:28,270 INFO L264 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (let ((.cse1 ((as const (Array Int Int)) 0))) (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse2 (not (= (select |#memory_int| |check_#in~a.base|) .cse1)))) (and (or .cse0 (and (= check_~ai~0 0) (= (select |#memory_int| check_~a.base) .cse1) (or (= check_~ax~0 0) (= check_~ax~0 1))) (not (<= 0 |check_#in~x|)) .cse2) (or .cse0 (not (<= 1 |check_#in~x|)) .cse2 (<= 1 check_~x))))) [2020-09-24 18:16:28,270 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-24 18:16:28,271 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 14 36) the Hoare annotation is: true [2020-09-24 18:16:28,271 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-24 18:16:28,271 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-09-24 18:16:28,271 INFO L268 CegarLoopResult]: For program point L31-2(line 31) no Hoare annotation was computed. [2020-09-24 18:16:28,271 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-24 18:16:28,271 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-24 18:16:28,271 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 18:16:28,272 INFO L268 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-09-24 18:16:28,272 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-24 18:16:28,272 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-24 18:16:28,272 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 18:16:28,272 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 18:16:28,272 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 18:16:28,272 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 14 36) no Hoare annotation was computed. [2020-09-24 18:16:28,273 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-24 18:16:28,273 INFO L268 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2020-09-24 18:16:28,273 INFO L268 CegarLoopResult]: For program point L32-2(line 32) no Hoare annotation was computed. [2020-09-24 18:16:28,273 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 18:16:28,273 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-24 18:16:28,273 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 18:16:28,274 INFO L268 CegarLoopResult]: For program point L24-2(lines 24 25) no Hoare annotation was computed. [2020-09-24 18:16:28,274 INFO L268 CegarLoopResult]: For program point L24-3(line 24) no Hoare annotation was computed. [2020-09-24 18:16:28,274 INFO L268 CegarLoopResult]: For program point L24-4(line 24) no Hoare annotation was computed. [2020-09-24 18:16:28,274 INFO L268 CegarLoopResult]: For program point L24-5(line 24) no Hoare annotation was computed. [2020-09-24 18:16:28,274 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 14 36) no Hoare annotation was computed. [2020-09-24 18:16:28,275 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (let ((.cse3 ((as const (Array Int Int)) 0))) (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse3)))) (and (or .cse0 (not (<= 0 |check_#in~x|)) .cse1 (let ((.cse2 (+ check_~y 1))) (and (<= .cse2 |check_#in~n|) (<= 0 check_~x) (<= .cse2 check_~n) (= (select |#memory_int| check_~a.base) .cse3)))) (or .cse0 (not (<= 1 |check_#in~x|)) .cse1 (<= 1 check_~x))))) [2020-09-24 18:16:28,275 INFO L268 CegarLoopResult]: For program point L24-6(line 24) no Hoare annotation was computed. [2020-09-24 18:16:28,275 INFO L264 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (let ((.cse3 ((as const (Array Int Int)) 0))) (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse3)))) (and (or .cse0 (not (<= 0 |check_#in~x|)) .cse1 (let ((.cse2 (+ check_~y 1))) (and (<= .cse2 |check_#in~n|) (<= 0 check_~x) (<= .cse2 check_~n) (= (select |#memory_int| check_~a.base) .cse3)))) (or .cse0 (not (<= 1 |check_#in~x|)) .cse1 (<= 1 check_~x))))) [2020-09-24 18:16:28,275 INFO L268 CegarLoopResult]: For program point L24-7(line 24) no Hoare annotation was computed. [2020-09-24 18:16:28,275 INFO L268 CegarLoopResult]: For program point L24-9(line 24) no Hoare annotation was computed. [2020-09-24 18:16:28,276 INFO L268 CegarLoopResult]: For program point L14(lines 14 36) no Hoare annotation was computed. [2020-09-24 18:16:28,276 INFO L268 CegarLoopResult]: For program point L24-10(line 24) no Hoare annotation was computed. [2020-09-24 18:16:28,276 INFO L268 CegarLoopResult]: For program point L14-1(lines 14 36) no Hoare annotation was computed. [2020-09-24 18:16:28,276 INFO L264 CegarLoopResult]: At program point L24-11(lines 24 25) the Hoare annotation is: (let ((.cse1 ((as const (Array Int Int)) 0))) (let ((.cse2 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse0 (+ check_~y 1)) (.cse3 (not (= (select |#memory_int| |check_#in~a.base|) .cse1)))) (and (or (and (<= .cse0 check_~n) (= (select |#memory_int| check_~a.base) .cse1) (<= 1 check_~x)) .cse2 (not (<= 0 |check_#in~x|)) .cse3) (or .cse2 (not (<= 1 |check_#in~x|)) (<= .cse0 |check_#in~n|) .cse3)))) [2020-09-24 18:16:28,277 INFO L268 CegarLoopResult]: For program point L14-2(lines 14 36) no Hoare annotation was computed. [2020-09-24 18:16:28,277 INFO L268 CegarLoopResult]: For program point L14-3(lines 14 36) no Hoare annotation was computed. [2020-09-24 18:16:28,277 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 8 10) the Hoare annotation is: true [2020-09-24 18:16:28,277 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 8 10) no Hoare annotation was computed. [2020-09-24 18:16:28,277 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-24 18:16:28,277 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-24 18:16:28,277 INFO L268 CegarLoopResult]: For program point L9-3(lines 8 10) no Hoare annotation was computed. [2020-09-24 18:16:28,278 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-09-24 18:16:28,278 INFO L264 CegarLoopResult]: At program point #Ultimate.meminitENTRY(line -1) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-09-24 18:16:28,278 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:16:28,278 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitFINAL(line -1) no Hoare annotation was computed. [2020-09-24 18:16:28,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:16:28 BoogieIcfgContainer [2020-09-24 18:16:28,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:16:28,289 INFO L168 Benchmark]: Toolchain (without parser) took 24844.60 ms. Allocated memory was 141.0 MB in the beginning and 388.5 MB in the end (delta: 247.5 MB). Free memory was 102.2 MB in the beginning and 290.9 MB in the end (delta: -188.7 MB). Peak memory consumption was 235.4 MB. Max. memory is 7.1 GB. [2020-09-24 18:16:28,290 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-24 18:16:28,291 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.50 ms. Allocated memory is still 141.0 MB. Free memory was 101.4 MB in the beginning and 91.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-24 18:16:28,292 INFO L168 Benchmark]: Boogie Preprocessor took 131.14 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 91.0 MB in the beginning and 182.9 MB in the end (delta: -91.9 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-24 18:16:28,293 INFO L168 Benchmark]: RCFGBuilder took 470.64 ms. Allocated memory is still 205.0 MB. Free memory was 182.9 MB in the beginning and 160.0 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-09-24 18:16:28,294 INFO L168 Benchmark]: TraceAbstraction took 23844.21 ms. Allocated memory was 205.0 MB in the beginning and 388.5 MB in the end (delta: 183.5 MB). Free memory was 160.0 MB in the beginning and 290.9 MB in the end (delta: -130.9 MB). Peak memory consumption was 229.2 MB. Max. memory is 7.1 GB. [2020-09-24 18:16:28,298 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 388.50 ms. Allocated memory is still 141.0 MB. Free memory was 101.4 MB in the beginning and 91.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.14 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 91.0 MB in the beginning and 182.9 MB in the end (delta: -91.9 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 470.64 ms. Allocated memory is still 205.0 MB. Free memory was 182.9 MB in the beginning and 160.0 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23844.21 ms. Allocated memory was 205.0 MB in the beginning and 388.5 MB in the end (delta: 183.5 MB). Free memory was 160.0 MB in the beginning and 290.9 MB in the end (delta: -130.9 MB). Peak memory consumption was 229.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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 7 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 23.0s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 320 SDtfs, 1013 SDslu, 461 SDs, 0 SdLazy, 3079 SolverSat, 283 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 169 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=151occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 52 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 82 PreInvPairs, 95 NumberOfFragments, 308 HoareAnnotationTreeSize, 82 FomulaSimplifications, 234 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 17 FomulaSimplificationsInter, 468 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.9s InterpolantComputationTime, 305 NumberOfCodeBlocks, 305 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 300 ConstructedInterpolants, 0 QuantifiedInterpolants, 60963 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 63/70 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...