/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id2_b2_o3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:08:44,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:08:44,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:08:44,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:08:44,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:08:44,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:08:44,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:08:44,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:08:44,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:08:44,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:08:44,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:08:44,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:08:44,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:08:44,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:08:44,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:08:44,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:08:44,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:08:44,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:08:44,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:08:44,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:08:44,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:08:44,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:08:44,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:08:44,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:08:44,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:08:44,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:08:44,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:08:44,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:08:44,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:08:44,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:08:44,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:08:44,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:08:44,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:08:44,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:08:44,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:08:44,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:08:44,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:08:44,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:08:44,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:08:44,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:08:44,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:08:44,969 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:08:44,995 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:08:44,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:08:44,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:08:44,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:08:44,997 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:08:44,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:08:44,997 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:08:44,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:08:44,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:08:44,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:08:44,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:08:44,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:08:44,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:08:44,998 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:08:44,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:08:44,999 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:08:44,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:08:44,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:08:44,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:08:45,000 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:08:45,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:08:45,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:08:45,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:08:45,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:08:45,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:08:45,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:08:45,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:08:45,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:08:45,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:08:45,002 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:08:45,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:08:45,464 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:08:45,471 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:08:45,473 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:08:45,474 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:08:45,475 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_b2_o3.c [2020-09-25 11:08:45,562 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26cf9fca7/01af59488d0948de970d44c30179e6c4/FLAGf679164ad [2020-09-25 11:08:46,084 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:08:46,085 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id2_b2_o3.c [2020-09-25 11:08:46,093 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26cf9fca7/01af59488d0948de970d44c30179e6c4/FLAGf679164ad [2020-09-25 11:08:46,434 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26cf9fca7/01af59488d0948de970d44c30179e6c4 [2020-09-25 11:08:46,447 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:08:46,453 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:08:46,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:08:46,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:08:46,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:08:46,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:08:46" (1/1) ... [2020-09-25 11:08:46,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:46, skipping insertion in model container [2020-09-25 11:08:46,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:08:46" (1/1) ... [2020-09-25 11:08:46,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:08:46,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:08:46,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:08:46,714 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:08:46,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:08:46,745 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:08:46,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:46 WrapperNode [2020-09-25 11:08:46,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:08:46,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:08:46,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:08:46,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:08:46,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:46" (1/1) ... [2020-09-25 11:08:46,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:46" (1/1) ... [2020-09-25 11:08:46,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:46" (1/1) ... [2020-09-25 11:08:46,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:46" (1/1) ... [2020-09-25 11:08:46,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:46" (1/1) ... [2020-09-25 11:08:46,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:46" (1/1) ... [2020-09-25 11:08:46,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:46" (1/1) ... [2020-09-25 11:08:46,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:08:46,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:08:46,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:08:46,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:08:46,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:08:46,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:08:46,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:08:46,935 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 11:08:46,936 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-09-25 11:08:46,936 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:08:46,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 11:08:46,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:08:46,936 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 11:08:46,936 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-09-25 11:08:46,936 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:08:46,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:08:46,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:08:47,211 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:08:47,211 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 11:08:47,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:08:47 BoogieIcfgContainer [2020-09-25 11:08:47,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:08:47,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:08:47,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:08:47,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:08:47,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:08:46" (1/3) ... [2020-09-25 11:08:47,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf6c2b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:08:47, skipping insertion in model container [2020-09-25 11:08:47,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:46" (2/3) ... [2020-09-25 11:08:47,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf6c2b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:08:47, skipping insertion in model container [2020-09-25 11:08:47,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:08:47" (3/3) ... [2020-09-25 11:08:47,251 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_b2_o3.c [2020-09-25 11:08:47,269 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:08:47,278 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:08:47,298 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:08:47,329 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:08:47,329 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:08:47,329 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:08:47,329 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:08:47,330 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:08:47,330 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:08:47,330 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:08:47,330 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:08:47,352 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-09-25 11:08:47,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 11:08:47,359 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:47,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:08:47,360 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:47,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:47,366 INFO L82 PathProgramCache]: Analyzing trace with hash 875745540, now seen corresponding path program 1 times [2020-09-25 11:08:47,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:47,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120254907] [2020-09-25 11:08:47,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:47,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:47,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:47,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:08:47,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:47,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 11:08:47,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:47,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:47,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:08:47,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:08:47,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:08:47,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:08:47,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:47,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:47,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:47,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:47,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:47,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:08:47,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:47,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:47,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:47,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:47,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:47,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:47,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 11:08:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:47,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:47,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:47,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:47,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:47,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 11:08:47,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:47,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:08:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:08:47,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:47,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:08:47,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120254907] [2020-09-25 11:08:47,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:08:47,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:08:47,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126115333] [2020-09-25 11:08:47,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:08:47,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:47,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:08:47,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:08:47,796 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2020-09-25 11:08:47,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:47,885 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-09-25 11:08:47,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:08:47,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 11:08:47,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:47,899 INFO L225 Difference]: With dead ends: 51 [2020-09-25 11:08:47,900 INFO L226 Difference]: Without dead ends: 36 [2020-09-25 11:08:47,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:08:47,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-25 11:08:47,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-25 11:08:47,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 11:08:47,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-09-25 11:08:47,958 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 16 [2020-09-25 11:08:47,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:47,959 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-09-25 11:08:47,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:08:47,959 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-09-25 11:08:47,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 11:08:47,962 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:47,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:08:47,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:08:47,963 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:47,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:47,963 INFO L82 PathProgramCache]: Analyzing trace with hash 71846672, now seen corresponding path program 1 times [2020-09-25 11:08:47,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:47,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779175248] [2020-09-25 11:08:47,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:47,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:48,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:48,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:48,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 11:08:48,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:48,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-09-25 11:08:48,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:48,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:48,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:08:48,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 11:08:48,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:08:48,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:08:48,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:48,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:48,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:48,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:48,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:48,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:08:48,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:48,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:48,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:48,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:48,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:48,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:48,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 11:08:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:48,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:48,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:48,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 11:08:48,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:48,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 11:08:48,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:48,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:48,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:48,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:48,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:08:48,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:48,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:08:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:48,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:48,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:48,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:48,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:48,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:08:48,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:48,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:48,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:08:48,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:48,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:08:48,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:08:48,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779175248] [2020-09-25 11:08:48,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:08:48,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 11:08:48,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642554228] [2020-09-25 11:08:48,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:08:48,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:48,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:08:48,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:08:48,688 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 8 states. [2020-09-25 11:08:48,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:48,801 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2020-09-25 11:08:48,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:08:48,802 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-09-25 11:08:48,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:48,804 INFO L225 Difference]: With dead ends: 66 [2020-09-25 11:08:48,804 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 11:08:48,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:08:48,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 11:08:48,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 11:08:48,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 11:08:48,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-09-25 11:08:48,815 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 25 [2020-09-25 11:08:48,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:48,815 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-09-25 11:08:48,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:08:48,816 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-09-25 11:08:48,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 11:08:48,817 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:48,818 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:08:48,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:08:48,818 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:48,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:48,819 INFO L82 PathProgramCache]: Analyzing trace with hash -511991682, now seen corresponding path program 1 times [2020-09-25 11:08:48,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:48,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786381343] [2020-09-25 11:08:48,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:48,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:48,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:49,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:49,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:49,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 11:08:49,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:08:49,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 744 [2020-09-25 11:08:49,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:49,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:49,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:08:49,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 11:08:49,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:08:49,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:49,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:49,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:49,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:49,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:49,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:49,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:08:49,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:49,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:49,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:49,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:49,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:49,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:49,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 11:08:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:49,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:49,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:49,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:49,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:08:49,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:49,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-09-25 11:08:49,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:49,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:49,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:08:49,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:08:49,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:08:49,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:49,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:08:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:49,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:49,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:50,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:50,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 11:08:50,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:50,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 11:08:50,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:50,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:50,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:08:50,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:50,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:08:50,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:50,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:08:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:50,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:50,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:50,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:50,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:50,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:08:50,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:50,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:50,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:50,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:50,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:50,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:50,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 11:08:50,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786381343] [2020-09-25 11:08:50,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:08:50,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:08:50,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298087400] [2020-09-25 11:08:50,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:08:50,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:50,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:08:50,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:08:50,180 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 5 states. [2020-09-25 11:08:50,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:50,229 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2020-09-25 11:08:50,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:08:50,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-25 11:08:50,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:50,232 INFO L225 Difference]: With dead ends: 69 [2020-09-25 11:08:50,232 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 11:08:50,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:08:50,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 11:08:50,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2020-09-25 11:08:50,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-25 11:08:50,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-09-25 11:08:50,242 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 34 [2020-09-25 11:08:50,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:50,244 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-09-25 11:08:50,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:08:50,244 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-09-25 11:08:50,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 11:08:50,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:50,246 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:08:50,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:08:50,246 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:50,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:50,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1477652418, now seen corresponding path program 1 times [2020-09-25 11:08:50,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:50,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445364592] [2020-09-25 11:08:50,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:50,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:50,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:50,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:50,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 11:08:50,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:50,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-09-25 11:08:50,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:50,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:50,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:08:50,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 11:08:50,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:08:50,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:50,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:50,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:50,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:50,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:50,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:50,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:08:50,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:50,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:50,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:50,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:50,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:50,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:50,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 11:08:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:50,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:50,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:50,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:50,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:08:50,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:50,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-25 11:08:50,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:50,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:50,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:08:50,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:50,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:08:50,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:50,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:08:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:50,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:50,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:50,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:50,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 11:08:50,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:50,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 11:08:50,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:50,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:50,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:08:50,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 11:08:50,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:08:50,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:50,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:08:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:50,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:50,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:50,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:50,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:50,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:08:50,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:50,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:50,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:08:50,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:50,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:08:50,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:50,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 11:08:50,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445364592] [2020-09-25 11:08:50,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:50,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:08:50,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230521003] [2020-09-25 11:08:50,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:08:50,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:50,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:08:50,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:08:50,983 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 8 states. [2020-09-25 11:08:51,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:51,075 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2020-09-25 11:08:51,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:08:51,076 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-25 11:08:51,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:51,077 INFO L225 Difference]: With dead ends: 84 [2020-09-25 11:08:51,077 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 11:08:51,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:08:51,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 11:08:51,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2020-09-25 11:08:51,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 11:08:51,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-09-25 11:08:51,086 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 34 [2020-09-25 11:08:51,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:51,087 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-09-25 11:08:51,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:08:51,087 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-09-25 11:08:51,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 11:08:51,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:51,089 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:08:51,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:08:51,089 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:51,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:51,090 INFO L82 PathProgramCache]: Analyzing trace with hash -2109914946, now seen corresponding path program 1 times [2020-09-25 11:08:51,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:51,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755298369] [2020-09-25 11:08:51,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:51,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:51,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:51,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:51,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 11:08:51,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:51,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-09-25 11:08:51,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:51,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:51,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:08:51,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 11:08:51,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:08:51,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:51,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:51,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:51,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:51,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:51,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:51,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:51,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:51,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:51,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:51,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:51,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:51,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:51,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 11:08:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:51,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:51,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:51,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:08:51,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:51,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 11:08:51,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:51,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:51,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:08:51,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:51,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:08:51,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:51,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:08:51,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:51,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:51,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:51,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 11:08:51,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:51,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 11:08:51,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:51,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:51,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:51,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:08:51,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:51,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:08:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:51,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:51,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:51,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:51,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:51,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:08:51,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:51,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:51,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:08:51,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:51,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:08:51,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:51,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 11:08:51,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755298369] [2020-09-25 11:08:51,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:51,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:08:51,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626572321] [2020-09-25 11:08:51,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:08:51,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:51,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:08:51,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:08:51,749 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 11 states. [2020-09-25 11:08:51,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:51,925 INFO L93 Difference]: Finished difference Result 92 states and 100 transitions. [2020-09-25 11:08:51,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:08:51,926 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-09-25 11:08:51,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:51,927 INFO L225 Difference]: With dead ends: 92 [2020-09-25 11:08:51,928 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 11:08:51,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:08:51,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 11:08:51,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 53. [2020-09-25 11:08:51,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 11:08:51,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-09-25 11:08:51,937 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 34 [2020-09-25 11:08:51,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:51,937 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-09-25 11:08:51,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:08:51,937 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-09-25 11:08:51,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 11:08:51,939 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:51,939 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:08:51,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:08:51,940 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:51,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:51,940 INFO L82 PathProgramCache]: Analyzing trace with hash 830258234, now seen corresponding path program 1 times [2020-09-25 11:08:51,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:51,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138451554] [2020-09-25 11:08:51,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:51,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:52,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:52,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:52,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 11:08:52,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:52,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 645 [2020-09-25 11:08:52,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:52,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:52,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:08:52,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 11:08:52,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:08:52,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:52,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:52,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:52,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:52,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:52,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:52,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:52,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:52,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:52,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:52,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:52,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:52,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:52,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 11:08:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:52,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:52,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:52,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 11:08:52,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:52,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-25 11:08:52,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:52,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:52,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:08:52,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:08:52,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:08:52,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:52,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:08:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:52,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:53,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:53,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:08:53,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:53,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 11:08:53,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:53,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:53,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:08:53,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:53,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:08:53,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:53,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:08:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:53,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:53,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:53,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 11:08:53,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:53,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 11:08:53,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:53,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:53,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:53,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:53,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:08:53,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:53,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:08:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:53,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:53,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:53,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:53,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:53,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:08:53,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:53,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:53,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:08:53,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:53,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:08:53,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:53,253 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 11:08:53,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138451554] [2020-09-25 11:08:53,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:53,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:08:53,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986739047] [2020-09-25 11:08:53,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:08:53,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:53,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:08:53,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:08:53,257 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 11 states. [2020-09-25 11:08:53,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:53,482 INFO L93 Difference]: Finished difference Result 99 states and 107 transitions. [2020-09-25 11:08:53,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:08:53,483 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-09-25 11:08:53,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:53,484 INFO L225 Difference]: With dead ends: 99 [2020-09-25 11:08:53,486 INFO L226 Difference]: Without dead ends: 73 [2020-09-25 11:08:53,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:08:53,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-25 11:08:53,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2020-09-25 11:08:53,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 11:08:53,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-09-25 11:08:53,502 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 43 [2020-09-25 11:08:53,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:53,503 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-09-25 11:08:53,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:08:53,503 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-09-25 11:08:53,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 11:08:53,507 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:53,507 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:08:53,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:08:53,508 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:53,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:53,509 INFO L82 PathProgramCache]: Analyzing trace with hash 444280, now seen corresponding path program 2 times [2020-09-25 11:08:53,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:53,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162086173] [2020-09-25 11:08:53,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:53,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:53,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:54,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:54,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:55,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:58,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:58,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 11:08:58,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:08:58,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 11:08:58,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:58,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:58,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:08:58,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 11:08:58,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 11:08:58,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:58,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:58,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:58,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:58,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:58,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:58,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:58,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:58,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:58,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:58,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:58,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:58,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:58,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 11:08:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:58,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:58,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:58,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:00,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:00,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 11:09:00,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:09:00,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1946 [2020-09-25 11:09:00,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:00,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:00,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:00,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 11:09:00,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 11:09:00,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:00,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:00,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:00,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:00,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:00,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 11:09:00,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:00,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-09-25 11:09:00,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:00,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:00,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:09:00,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:00,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 11:09:00,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:01,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:01,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:01,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:01,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:09:01,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:01,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 11:09:01,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:01,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:01,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:01,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:01,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:09:01,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:01,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:01,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:01,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:01,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 11:09:01,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:01,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 11:09:01,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:01,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:01,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:09:01,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:01,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:09:01,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:01,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:01,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:01,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:01,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:01,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:01,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:09:01,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:01,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:01,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:01,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:01,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:01,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:01,449 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 11:09:01,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162086173] [2020-09-25 11:09:01,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:01,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 11:09:01,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888768663] [2020-09-25 11:09:01,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 11:09:01,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:01,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 11:09:01,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:09:01,452 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 14 states. [2020-09-25 11:09:01,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:01,737 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2020-09-25 11:09:01,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:09:01,738 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2020-09-25 11:09:01,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:01,738 INFO L225 Difference]: With dead ends: 81 [2020-09-25 11:09:01,739 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 11:09:01,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:09:01,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 11:09:01,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 11:09:01,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 11:09:01,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 11:09:01,741 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2020-09-25 11:09:01,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:01,742 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 11:09:01,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 11:09:01,742 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 11:09:01,742 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 11:09:01,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:09:01,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 11:09:01,781 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 11:09:01,782 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 11:09:01,782 INFO L268 CegarLoopResult]: For program point id2FINAL(lines 14 19) no Hoare annotation was computed. [2020-09-25 11:09:01,782 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 11:09:01,782 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 11:09:01,783 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-09-25 11:09:01,783 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 11:09:01,783 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 11:09:01,783 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 11:09:01,783 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 11:09:01,784 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 11:09:01,784 INFO L268 CegarLoopResult]: For program point id2EXIT(lines 14 19) no Hoare annotation was computed. [2020-09-25 11:09:01,784 INFO L271 CegarLoopResult]: At program point id2ENTRY(lines 14 19) the Hoare annotation is: true [2020-09-25 11:09:01,784 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 11:09:01,785 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 11:09:01,785 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 11:09:01,785 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 11:09:01,785 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2020-09-25 11:09:01,786 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 21 27) the Hoare annotation is: true [2020-09-25 11:09:01,786 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 11:09:01,786 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 21 27) no Hoare annotation was computed. [2020-09-25 11:09:01,786 INFO L268 CegarLoopResult]: For program point L24(lines 24 26) no Hoare annotation was computed. [2020-09-25 11:09:01,786 INFO L271 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-09-25 11:09:01,787 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 11:09:01,787 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-25 11:09:01,787 INFO L268 CegarLoopResult]: For program point L24-2(lines 21 27) no Hoare annotation was computed. [2020-09-25 11:09:01,787 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-25 11:09:01,787 INFO L268 CegarLoopResult]: For program point idFINAL(lines 7 12) no Hoare annotation was computed. [2020-09-25 11:09:01,788 INFO L268 CegarLoopResult]: For program point idEXIT(lines 7 12) no Hoare annotation was computed. [2020-09-25 11:09:01,788 INFO L271 CegarLoopResult]: At program point idENTRY(lines 7 12) the Hoare annotation is: true [2020-09-25 11:09:01,788 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-25 11:09:01,788 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 11:09:01,789 INFO L271 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: true [2020-09-25 11:09:01,789 INFO L268 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2020-09-25 11:09:01,789 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 11:09:01,789 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-25 11:09:01,789 INFO L268 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-09-25 11:09:01,790 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-25 11:09:01,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:09:01 BoogieIcfgContainer [2020-09-25 11:09:01,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 11:09:01,802 INFO L168 Benchmark]: Toolchain (without parser) took 15351.41 ms. Allocated memory was 140.5 MB in the beginning and 337.1 MB in the end (delta: 196.6 MB). Free memory was 102.8 MB in the beginning and 242.5 MB in the end (delta: -139.8 MB). Peak memory consumption was 56.9 MB. Max. memory is 7.1 GB. [2020-09-25 11:09:01,803 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 11:09:01,804 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.46 ms. Allocated memory is still 140.5 MB. Free memory was 102.1 MB in the beginning and 92.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-25 11:09:01,805 INFO L168 Benchmark]: Boogie Preprocessor took 107.52 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 92.5 MB in the beginning and 182.6 MB in the end (delta: -90.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 11:09:01,805 INFO L168 Benchmark]: RCFGBuilder took 363.29 ms. Allocated memory is still 203.4 MB. Free memory was 182.2 MB in the beginning and 168.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-25 11:09:01,806 INFO L168 Benchmark]: TraceAbstraction took 14566.43 ms. Allocated memory was 203.4 MB in the beginning and 337.1 MB in the end (delta: 133.7 MB). Free memory was 168.0 MB in the beginning and 242.5 MB in the end (delta: -74.5 MB). Peak memory consumption was 59.2 MB. Max. memory is 7.1 GB. [2020-09-25 11:09:01,810 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 289.46 ms. Allocated memory is still 140.5 MB. Free memory was 102.1 MB in the beginning and 92.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.52 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 92.5 MB in the beginning and 182.6 MB in the end (delta: -90.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 363.29 ms. Allocated memory is still 203.4 MB. Free memory was 182.2 MB in the beginning and 168.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14566.43 ms. Allocated memory was 203.4 MB in the beginning and 337.1 MB in the end (delta: 133.7 MB). Free memory was 168.0 MB in the beginning and 242.5 MB in the end (delta: -74.5 MB). Peak memory consumption was 59.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.4s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 279 SDtfs, 43 SDslu, 1751 SDs, 0 SdLazy, 399 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 144 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 28 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 12.8s InterpolantComputationTime, 238 NumberOfCodeBlocks, 238 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 231 ConstructedInterpolants, 0 QuantifiedInterpolants, 27321 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 31/51 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...