/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/fibo_2calls_5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:07:50,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:07:50,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:07:50,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:07:50,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:07:50,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:07:50,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:07:50,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:07:50,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:07:50,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:07:50,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:07:50,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:07:50,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:07:50,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:07:50,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:07:50,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:07:50,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:07:50,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:07:50,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:07:50,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:07:50,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:07:50,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:07:50,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:07:50,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:07:50,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:07:50,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:07:50,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:07:50,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:07:50,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:07:51,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:07:51,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:07:51,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:07:51,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:07:51,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:07:51,012 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:07:51,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:07:51,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:07:51,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:07:51,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:07:51,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:07:51,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:07:51,018 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 11:07:51,066 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:07:51,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:07:51,068 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:07:51,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:07:51,069 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:07:51,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:07:51,070 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:07:51,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:07:51,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:07:51,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:07:51,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:07:51,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:07:51,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:07:51,072 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:07:51,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:07:51,072 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:07:51,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:07:51,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:07:51,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:07:51,073 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:07:51,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:07:51,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:07:51,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:07:51,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:07:51,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:07:51,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:07:51,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:07:51,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:07:51,075 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:07:51,075 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 11:07:51,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:07:51,609 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:07:51,614 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:07:51,615 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:07:51,616 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:07:51,617 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c [2020-09-25 11:07:51,692 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a46cb9839/15a4fe630ac747f1bbf237ef16f8504e/FLAG1fbeea0aa [2020-09-25 11:07:52,183 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:07:52,184 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c [2020-09-25 11:07:52,195 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a46cb9839/15a4fe630ac747f1bbf237ef16f8504e/FLAG1fbeea0aa [2020-09-25 11:07:52,525 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a46cb9839/15a4fe630ac747f1bbf237ef16f8504e [2020-09-25 11:07:52,538 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:07:52,545 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:07:52,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:07:52,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:07:52,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:07:52,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:07:52" (1/1) ... [2020-09-25 11:07:52,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f58caab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:52, skipping insertion in model container [2020-09-25 11:07:52,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:07:52" (1/1) ... [2020-09-25 11:07:52,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:07:52,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:07:52,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:07:52,901 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:07:52,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:07:52,935 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:07:52,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:52 WrapperNode [2020-09-25 11:07:52,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:07:52,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:07:52,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:07:52,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:07:52,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:52" (1/1) ... [2020-09-25 11:07:52,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:52" (1/1) ... [2020-09-25 11:07:53,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:52" (1/1) ... [2020-09-25 11:07:53,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:52" (1/1) ... [2020-09-25 11:07:53,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:52" (1/1) ... [2020-09-25 11:07:53,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:52" (1/1) ... [2020-09-25 11:07:53,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:52" (1/1) ... [2020-09-25 11:07:53,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:07:53,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:07:53,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:07:53,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:07:53,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:52" (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 11:07:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:07:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:07:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 11:07:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 11:07:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:07:53,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:07:53,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:07:53,137 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 11:07:53,137 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 11:07:53,137 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:07:53,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:07:53,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:07:53,380 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:07:53,380 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 11:07:53,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:07:53 BoogieIcfgContainer [2020-09-25 11:07:53,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:07:53,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:07:53,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:07:53,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:07:53,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:07:52" (1/3) ... [2020-09-25 11:07:53,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de20fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:07:53, skipping insertion in model container [2020-09-25 11:07:53,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:52" (2/3) ... [2020-09-25 11:07:53,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de20fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:07:53, skipping insertion in model container [2020-09-25 11:07:53,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:07:53" (3/3) ... [2020-09-25 11:07:53,396 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-1.c [2020-09-25 11:07:53,409 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:07:53,419 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:07:53,457 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:07:53,523 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:07:53,523 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:07:53,523 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:07:53,524 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:07:53,524 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:07:53,524 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:07:53,524 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:07:53,524 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:07:53,551 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 11:07:53,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 11:07:53,563 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:53,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:53,565 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:53,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:53,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 11:07:53,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:53,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702287371] [2020-09-25 11:07:53,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:53,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:53,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:53,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:07:53,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:53,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 11:07:53,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:53,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:53,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:07:53,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:07:53,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:53,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:53,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:53,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:53,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:53,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:07:53,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:53,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:53,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:53,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:53,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:53,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:53,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:53,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:53,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:53,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:53,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:53,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 11:07:53,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:53,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:53,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:53,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:53,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:53,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:53,928 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 11:07:53,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702287371] [2020-09-25 11:07:53,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:07:53,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:07:53,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589259731] [2020-09-25 11:07:53,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:07:53,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:53,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:07:53,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:07:53,964 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 11:07:54,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:54,097 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 11:07:54,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:07:54,100 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 11:07:54,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:54,115 INFO L225 Difference]: With dead ends: 58 [2020-09-25 11:07:54,115 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 11:07:54,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:07:54,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 11:07:54,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 11:07:54,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 11:07:54,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 11:07:54,186 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 11:07:54,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:54,187 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 11:07:54,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:07:54,187 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 11:07:54,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 11:07:54,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:54,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:54,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:07:54,190 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:54,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:54,191 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 11:07:54,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:54,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962064525] [2020-09-25 11:07:54,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:54,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:54,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:54,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 11:07:54,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:54,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 11:07:54,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:54,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:54,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:54,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:54,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:54,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:54,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:54,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:54,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:54,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:54,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:54,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:54,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:54,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:54,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:54,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:54,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:54,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:54,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:54,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:54,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:54,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:54,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:54,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 11:07:54,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:54,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:54,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:54,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:54,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:54,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:54,402 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 11:07:54,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962064525] [2020-09-25 11:07:54,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:07:54,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:07:54,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773329816] [2020-09-25 11:07:54,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:07:54,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:54,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:07:54,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:07:54,407 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 11:07:54,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:54,487 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 11:07:54,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:07:54,487 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 11:07:54,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:54,489 INFO L225 Difference]: With dead ends: 50 [2020-09-25 11:07:54,490 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 11:07:54,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:07:54,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 11:07:54,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 11:07:54,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 11:07:54,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 11:07:54,502 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 11:07:54,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:54,502 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 11:07:54,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:07:54,502 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 11:07:54,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 11:07:54,504 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:54,505 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:54,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:07:54,505 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:54,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:54,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 11:07:54,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:54,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8370507] [2020-09-25 11:07:54,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:54,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:54,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:54,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:55,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:55,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 11:07:55,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:55,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-09-25 11:07:55,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:55,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:55,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:55,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:55,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:07:55,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:07:55,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:55,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:55,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:55,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:55,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:55,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:07:55,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:55,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:55,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:55,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:55,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:55,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:55,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:55,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:55,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:55,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:55,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:55,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:55,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:55,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:55,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-25 11:07:55,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:55,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:55,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:55,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:55,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:07:55,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:07:55,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:55,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:55,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:55,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:55,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:55,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:07:55,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:55,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:55,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:55,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:55,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:55,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:55,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:55,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:55,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:55,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:55,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:55,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:07:55,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:55,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:55,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:55,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:55,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:55,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:55,426 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:07:55,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8370507] [2020-09-25 11:07:55,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:07:55,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:07:55,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825250285] [2020-09-25 11:07:55,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:07:55,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:55,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:07:55,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:07:55,430 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 11:07:55,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:55,578 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 11:07:55,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:07:55,579 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 11:07:55,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:55,581 INFO L225 Difference]: With dead ends: 58 [2020-09-25 11:07:55,581 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 11:07:55,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:07:55,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 11:07:55,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 11:07:55,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 11:07:55,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 11:07:55,594 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 11:07:55,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:55,594 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 11:07:55,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:07:55,595 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 11:07:55,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 11:07:55,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:55,597 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:55,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:07:55,598 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:55,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:55,598 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 11:07:55,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:55,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862316714] [2020-09-25 11:07:55,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:55,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:55,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:55,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:55,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:56,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:56,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 11:07:56,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:07:56,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-09-25 11:07:56,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:56,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:56,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:56,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:56,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 11:07:56,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:56,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:56,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:56,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:56,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:56,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:56,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:07:56,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:56,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:56,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:56,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:56,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:56,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:56,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:56,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:56,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:56,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:56,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:56,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:56,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:07:56,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:07:56,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-09-25 11:07:56,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:56,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:56,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:56,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:56,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:07:56,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:56,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:56,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:56,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:56,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:56,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:56,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:07:56,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:56,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:56,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:56,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:07:56,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:56,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:07:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:56,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:56,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:56,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:56,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:56,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:07:56,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:56,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:56,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:56,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:56,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:56,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:56,699 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:07:56,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862316714] [2020-09-25 11:07:56,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:56,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:07:56,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043244638] [2020-09-25 11:07:56,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:07:56,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:56,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:07:56,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:07:56,702 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 11:07:56,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:56,832 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2020-09-25 11:07:56,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:07:56,833 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 11:07:56,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:56,836 INFO L225 Difference]: With dead ends: 110 [2020-09-25 11:07:56,836 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 11:07:56,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:07:56,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 11:07:56,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 11:07:56,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 11:07:56,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 11:07:56,850 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 35 [2020-09-25 11:07:56,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:56,851 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 11:07:56,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:07:56,851 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 11:07:56,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 11:07:56,854 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:56,854 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:56,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:07:56,855 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:56,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:56,855 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 11:07:56,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:56,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824683565] [2020-09-25 11:07:56,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:56,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:56,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:56,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:56,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:01,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:01,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 11:08:01,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:08:01,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:08:01,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:01,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:01,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:01,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:08:01,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 11:08:01,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:01,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:01,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:01,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:01,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:01,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:01,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:01,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:01,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:01,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:01,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:01,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:01,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:01,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:01,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:01,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:01,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:02,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:02,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:02,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:02,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:05,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:05,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 11:08:05,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:08:05,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3597 [2020-09-25 11:08:05,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:05,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:05,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:05,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:05,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:08:05,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:05,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:05,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:05,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:05,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:05,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:05,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:05,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 11:08:05,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:05,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:05,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:05,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:05,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:08:05,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:05,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:05,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:05,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:05,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:05,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:05,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:08:05,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:05,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:05,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:05,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:05,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:05,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:05,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:05,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:05,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:05,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:05,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:05,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:08:05,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:05,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:05,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:05,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:05,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:05,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:05,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:08:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:05,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:05,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:05,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:05,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:05,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:08:05,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:05,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:05,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:05,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:05,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:08:05,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:05,688 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 11:08:05,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824683565] [2020-09-25 11:08:05,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:05,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:08:05,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741879471] [2020-09-25 11:08:05,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:08:05,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:05,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:08:05,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:08:05,690 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 7 states. [2020-09-25 11:08:05,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:05,820 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2020-09-25 11:08:05,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:08:05,821 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 11:08:05,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:05,823 INFO L225 Difference]: With dead ends: 72 [2020-09-25 11:08:05,824 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 11:08:05,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:08:05,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 11:08:05,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 11:08:05,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 11:08:05,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 11:08:05,836 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 51 [2020-09-25 11:08:05,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:05,837 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 11:08:05,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:08:05,837 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 11:08:05,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 11:08:05,840 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:05,840 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:08:05,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:08:05,841 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:05,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:05,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 11:08:05,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:05,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346930952] [2020-09-25 11:08:05,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:05,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:05,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:05,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:05,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:06,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:06,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:06,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:06,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:06,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:06,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:10,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 11:08:10,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:08:10,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:08:10,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:10,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:10,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:08:10,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:08:10,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 11:08:10,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:10,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:10,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:10,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:10,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:10,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:10,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:10,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:10,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:10,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:10,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:10,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:10,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:10,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:10,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:11,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:11,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:11,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:13,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:13,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:15,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 11:08:15,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:08:15,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:08:15,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:15,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:08:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:08:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 11:08:15,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:15,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:15,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:16,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:16,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:16,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:08:16,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 11:08:16,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:16,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:16,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:16,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:16,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:08:16,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:16,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:16,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:16,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:16,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:16,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:16,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:08:16,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:16,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:16,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:16,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:16,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:08:16,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:16,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:16,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:16,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:16,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:16,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:16,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:08:16,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:16,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:16,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:16,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:16,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:16,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:16,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:08:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:16,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:16,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:16,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:16,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:16,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:16,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 11:08:16,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:16,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:16,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:16,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:16,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:08:16,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:16,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:16,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:16,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:16,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:16,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:16,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:08:16,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:16,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:16,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:16,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:16,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:16,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:16,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:16,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:16,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:08:16,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:16,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:16,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:16,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:16,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:16,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:16,287 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 11:08:16,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346930952] [2020-09-25 11:08:16,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:16,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:08:16,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820811564] [2020-09-25 11:08:16,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:08:16,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:16,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:08:16,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:08:16,290 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 10 states. [2020-09-25 11:08:16,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:16,528 INFO L93 Difference]: Finished difference Result 107 states and 144 transitions. [2020-09-25 11:08:16,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:08:16,529 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-09-25 11:08:16,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:16,530 INFO L225 Difference]: With dead ends: 107 [2020-09-25 11:08:16,531 INFO L226 Difference]: Without dead ends: 59 [2020-09-25 11:08:16,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:08:16,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-25 11:08:16,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-09-25 11:08:16,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 11:08:16,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 72 transitions. [2020-09-25 11:08:16,542 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 72 transitions. Word has length 67 [2020-09-25 11:08:16,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:16,543 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 72 transitions. [2020-09-25 11:08:16,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:08:16,543 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 72 transitions. [2020-09-25 11:08:16,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 11:08:16,544 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:16,545 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:08:16,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:08:16,545 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:16,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:16,545 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 11:08:16,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:16,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818850078] [2020-09-25 11:08:16,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:16,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:16,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:16,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:16,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:16,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:16,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:17,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:18,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:18,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:19,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:21,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:21,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:21,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 11:08:21,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 11:08:21,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:08:21,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:21,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:21,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:08:21,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:08:21,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:08:21,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:21,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:21,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:21,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:21,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:21,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:21,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:21,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:21,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:21,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:21,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:21,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:21,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:21,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:21,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:21,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:21,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:21,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:21,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:21,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:22,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:25,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:25,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:26,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:08:26,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 11:08:26,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:08:26,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:26,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:26,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:08:26,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:26,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 11:08:26,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:26,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:26,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:26,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:08:26,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:26,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-25 11:08:26,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:26,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:26,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:08:26,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:26,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:08:26,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:26,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:26,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:26,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:26,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:26,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:08:26,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:26,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:26,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:26,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:26,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:08:26,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:26,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:08:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:26,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:26,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:26,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:26,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:08:26,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:26,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:26,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:26,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:26,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:26,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:26,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:08:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:26,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:26,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:08:26,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:26,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:08:26,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:26,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:26,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:26,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:26,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:08:26,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:26,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:26,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:26,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:26,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:26,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:08:26,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:26,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:26,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:26,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:26,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:26,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:26,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:08:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:26,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:26,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:26,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:26,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:08:26,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:26,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:26,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:26,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:26,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:26,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:26,952 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 11:08:26,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818850078] [2020-09-25 11:08:26,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:26,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:08:26,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379967275] [2020-09-25 11:08:26,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:08:26,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:26,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:08:26,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:08:26,954 INFO L87 Difference]: Start difference. First operand 59 states and 72 transitions. Second operand 9 states. [2020-09-25 11:08:27,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:27,152 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2020-09-25 11:08:27,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:08:27,152 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 11:08:27,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:27,154 INFO L225 Difference]: With dead ends: 83 [2020-09-25 11:08:27,154 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 11:08:27,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:08:27,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 11:08:27,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2020-09-25 11:08:27,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-25 11:08:27,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2020-09-25 11:08:27,167 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 69 [2020-09-25 11:08:27,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:27,167 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2020-09-25 11:08:27,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:08:27,168 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2020-09-25 11:08:27,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 11:08:27,169 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:27,169 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 11:08:27,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:08:27,170 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:27,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:27,170 INFO L82 PathProgramCache]: Analyzing trace with hash 2120760888, now seen corresponding path program 1 times [2020-09-25 11:08:27,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:27,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400264890] [2020-09-25 11:08:27,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:27,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:27,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:27,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:27,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:27,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:27,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:27,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:27,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:27,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:28,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:29,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:29,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:29,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:32,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:32,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 11:08:32,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 11:08:32,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:08:32,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:32,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:32,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:08:32,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:08:32,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 11:08:32,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:32,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:32,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:32,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:32,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:32,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:32,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:32,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:32,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:32,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:32,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:32,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:32,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:32,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:32,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:32,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:32,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:32,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:32,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:32,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:32,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:32,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:32,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:33,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:33,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:33,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:33,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:34,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:34,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:34,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:34,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:37,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 11:08:37,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-09-25 11:08:37,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 11:08:37,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:37,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:37,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:08:37,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:08:37,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 11:08:37,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:37,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:37,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:38,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:38,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 11:08:38,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:08:38,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1066 [2020-09-25 11:08:38,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:38,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:38,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:38,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:38,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:08:38,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:38,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:38,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:38,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:38,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:38,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:38,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:38,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 11:08:38,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:38,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:38,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:38,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:38,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:08:38,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:38,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:38,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:38,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:38,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:38,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:38,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:08:38,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:38,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:38,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:38,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:38,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:38,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:38,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:38,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:38,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:38,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:38,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:38,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:08:38,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:38,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:38,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:38,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:38,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:38,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:38,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:08:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:38,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:38,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:38,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:38,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:38,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:08:38,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:38,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:38,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:38,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:38,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:08:38,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:38,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 11:08:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:38,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:38,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:38,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:38,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:38,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:38,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:39,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:39,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 11:08:39,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:08:39,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1377 [2020-09-25 11:08:39,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:39,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:39,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:39,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:39,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 11:08:39,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:39,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:39,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:39,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:39,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:39,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:39,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:39,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 11:08:39,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:39,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:39,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:39,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:39,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:08:39,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:39,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:39,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:39,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:39,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:39,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:39,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:08:39,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:39,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:39,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:39,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:39,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:39,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:39,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:39,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:39,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:39,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:39,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:39,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:08:39,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:39,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:39,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:39,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:39,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:39,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:39,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:08:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:39,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:39,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:39,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:39,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:39,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:08:39,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:39,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:39,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:39,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:39,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:39,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:40,005 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 36 proven. 30 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 11:08:40,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400264890] [2020-09-25 11:08:40,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:40,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:08:40,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923219495] [2020-09-25 11:08:40,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:08:40,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:40,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:08:40,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:08:40,008 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand 11 states. [2020-09-25 11:08:40,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:40,508 INFO L93 Difference]: Finished difference Result 187 states and 302 transitions. [2020-09-25 11:08:40,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:08:40,511 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 101 [2020-09-25 11:08:40,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:40,513 INFO L225 Difference]: With dead ends: 187 [2020-09-25 11:08:40,513 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 11:08:40,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:08:40,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 11:08:40,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 83. [2020-09-25 11:08:40,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-25 11:08:40,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 110 transitions. [2020-09-25 11:08:40,529 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 110 transitions. Word has length 101 [2020-09-25 11:08:40,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:40,529 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 110 transitions. [2020-09-25 11:08:40,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:08:40,530 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 110 transitions. [2020-09-25 11:08:40,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 11:08:40,531 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:40,531 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 11:08:40,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:08:40,532 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:40,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:40,532 INFO L82 PathProgramCache]: Analyzing trace with hash 2103958142, now seen corresponding path program 1 times [2020-09-25 11:08:40,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:40,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97738721] [2020-09-25 11:08:40,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:40,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:40,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:40,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:40,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:40,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:40,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:40,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:40,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:40,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:44,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:45,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:45,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:45,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:45,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:45,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 11:08:45,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 11:08:45,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:08:45,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:45,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:45,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:08:45,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:08:45,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 11:08:45,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:45,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:45,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:45,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:45,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:45,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:45,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:45,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:45,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:45,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:45,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:45,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:45,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:45,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:45,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:45,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:45,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:45,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:45,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:45,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:45,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:45,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:45,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking...