/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=0.4 --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_10-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:22:09,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:22:09,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:22:09,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:22:09,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:22:09,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:22:09,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:22:09,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:22:09,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:22:09,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:22:09,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:22:09,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:22:09,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:22:09,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:22:09,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:22:09,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:22:09,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:22:09,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:22:09,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:22:09,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:22:09,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:22:09,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:22:09,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:22:09,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:22:09,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:22:09,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:22:09,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:22:09,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:22:09,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:22:09,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:22:09,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:22:09,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:22:09,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:22:09,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:22:09,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:22:09,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:22:10,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:22:10,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:22:10,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:22:10,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:22:10,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:22:10,004 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 13:22:10,049 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:22:10,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:22:10,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:22:10,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:22:10,052 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:22:10,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:22:10,053 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:22:10,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:22:10,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:22:10,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:22:10,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:22:10,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:22:10,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:22:10,056 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:22:10,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:22:10,056 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:22:10,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:22:10,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:22:10,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:22:10,057 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:22:10,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:22:10,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:22:10,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:22:10,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:22:10,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:22:10,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:22:10,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:22:10,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:22:10,059 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:22:10,059 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:22:10,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:22:10,522 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:22:10,527 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:22:10,529 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:22:10,529 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:22:10,530 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_10-1.c [2020-09-25 13:22:10,625 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/357daf3d9/6858b1fd0fab465aa91c0c6b988ac5d3/FLAG204582de5 [2020-09-25 13:22:11,162 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:22:11,163 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_10-1.c [2020-09-25 13:22:11,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/357daf3d9/6858b1fd0fab465aa91c0c6b988ac5d3/FLAG204582de5 [2020-09-25 13:22:11,514 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/357daf3d9/6858b1fd0fab465aa91c0c6b988ac5d3 [2020-09-25 13:22:11,530 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:22:11,536 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:22:11,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:22:11,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:22:11,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:22:11,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:22:11" (1/1) ... [2020-09-25 13:22:11,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39315203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:11, skipping insertion in model container [2020-09-25 13:22:11,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:22:11" (1/1) ... [2020-09-25 13:22:11,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:22:11,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:22:11,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:22:11,784 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:22:11,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:22:11,819 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:22:11,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:11 WrapperNode [2020-09-25 13:22:11,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:22:11,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:22:11,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:22:11,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:22:11,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:11" (1/1) ... [2020-09-25 13:22:11,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:11" (1/1) ... [2020-09-25 13:22:11,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:11" (1/1) ... [2020-09-25 13:22:11,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:11" (1/1) ... [2020-09-25 13:22:11,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:11" (1/1) ... [2020-09-25 13:22:11,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:11" (1/1) ... [2020-09-25 13:22:11,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:11" (1/1) ... [2020-09-25 13:22:11,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:22:11,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:22:11,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:22:11,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:22:11,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:11" (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 13:22:12,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:22:12,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:22:12,021 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 13:22:12,022 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:22:12,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:22:12,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:22:12,023 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 13:22:12,025 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:22:12,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:22:12,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:22:12,255 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:22:12,256 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 13:22:12,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:22:12 BoogieIcfgContainer [2020-09-25 13:22:12,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:22:12,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:22:12,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:22:12,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:22:12,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:22:11" (1/3) ... [2020-09-25 13:22:12,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6e1bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:22:12, skipping insertion in model container [2020-09-25 13:22:12,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:11" (2/3) ... [2020-09-25 13:22:12,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6e1bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:22:12, skipping insertion in model container [2020-09-25 13:22:12,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:22:12" (3/3) ... [2020-09-25 13:22:12,286 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_10-1.c [2020-09-25 13:22:12,303 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:22:12,313 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:22:12,353 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:22:12,381 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:22:12,382 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:22:12,382 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:22:12,382 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:22:12,382 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:22:12,382 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:22:12,383 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:22:12,383 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:22:12,402 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 13:22:12,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 13:22:12,410 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:12,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:12,412 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:12,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:12,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 13:22:12,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:12,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335975192] [2020-09-25 13:22:12,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:12,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:12,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:12,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:12,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:22:12,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:12,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-25 13:22:12,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:12,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:12,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:12,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:22:12,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:22:12,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 13:22:12,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:12,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:12,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:12,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:12,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:12,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:12,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:12,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:12,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:12,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:12,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:12,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:12,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:12,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:12,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:12,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:12,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:12,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:22:12,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:12,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:12,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:22:12,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:12,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:22:12,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:12,892 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 13:22:12,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335975192] [2020-09-25 13:22:12,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:22:12,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:22:12,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141611142] [2020-09-25 13:22:12,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:22:12,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:12,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:22:12,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:22:12,921 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 13:22:13,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:13,029 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 13:22:13,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:22:13,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 13:22:13,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:13,045 INFO L225 Difference]: With dead ends: 44 [2020-09-25 13:22:13,046 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 13:22:13,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:22:13,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 13:22:13,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 13:22:13,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 13:22:13,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 13:22:13,107 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 13:22:13,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:13,108 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 13:22:13,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:22:13,108 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 13:22:13,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 13:22:13,111 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:13,111 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 13:22:13,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:22:13,112 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:13,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:13,112 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 13:22:13,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:13,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349197513] [2020-09-25 13:22:13,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:13,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:13,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:13,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:13,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:22:13,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:13,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 13:22:13,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:13,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:13,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:13,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:13,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:22:13,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:22:13,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:13,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:13,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:13,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:13,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:13,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:22:13,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:13,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:13,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:13,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:13,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:13,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:22:13,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:13,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:13,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:13,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:13,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:13,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 13:22:13,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:13,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:13,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:13,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:13,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:13,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:13,396 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 13:22:13,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349197513] [2020-09-25 13:22:13,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:22:13,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:22:13,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124204802] [2020-09-25 13:22:13,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:22:13,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:13,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:22:13,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:22:13,401 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 13:22:13,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:13,457 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 13:22:13,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:22:13,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 13:22:13,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:13,460 INFO L225 Difference]: With dead ends: 36 [2020-09-25 13:22:13,460 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 13:22:13,461 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 13:22:13,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 13:22:13,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 13:22:13,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 13:22:13,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 13:22:13,470 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 13:22:13,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:13,471 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 13:22:13,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:22:13,471 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 13:22:13,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 13:22:13,473 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:13,473 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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 13:22:13,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:22:13,474 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:13,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:13,474 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 13:22:13,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:13,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546376595] [2020-09-25 13:22:13,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:13,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:13,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:13,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:13,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:15,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:15,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 13:22:15,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:22:15,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1856 [2020-09-25 13:22:15,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:15,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:15,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:15,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:15,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:22:15,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:15,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:15,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:15,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:15,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:15,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:15,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:22:15,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:15,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:15,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:15,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:15,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:15,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:15,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:15,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:15,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:15,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:22:15,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:22:15,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-25 13:22:15,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:15,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:15,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:15,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:15,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:22:15,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:22:15,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:15,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:15,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:15,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:15,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:15,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:22:15,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:15,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:15,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:15,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:15,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:22:15,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:15,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:22:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:15,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:15,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:15,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:15,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:15,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:22:15,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:15,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:15,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:15,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:15,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:15,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:15,736 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 13:22:15,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546376595] [2020-09-25 13:22:15,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:15,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:22:15,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378487847] [2020-09-25 13:22:15,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:22:15,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:15,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:22:15,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:22:15,750 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-09-25 13:22:15,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:15,851 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-09-25 13:22:15,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:22:15,852 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-25 13:22:15,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:15,854 INFO L225 Difference]: With dead ends: 44 [2020-09-25 13:22:15,854 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 13:22:15,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:22:15,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 13:22:15,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-09-25 13:22:15,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 13:22:15,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-25 13:22:15,865 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-25 13:22:15,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:15,865 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-25 13:22:15,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:22:15,866 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-25 13:22:15,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 13:22:15,867 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:15,868 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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 13:22:15,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:22:15,868 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:15,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:15,869 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 13:22:15,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:15,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145507773] [2020-09-25 13:22:15,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:15,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:15,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:15,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:16,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:16,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:17,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 13:22:17,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:22:17,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1748 [2020-09-25 13:22:17,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:17,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:17,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:17,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:22:17,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:22:17,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:17,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:17,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:17,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:17,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:17,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:22:17,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:17,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:17,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:17,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:17,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:17,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:17,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:17,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:17,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:22:17,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:17,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 13:22:17,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:17,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:17,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:17,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:22:17,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:22:17,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:17,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:17,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:17,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:17,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:17,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 13:22:17,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:17,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:17,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:17,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:17,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:22:17,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:17,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:22:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:17,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:17,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:17,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:17,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 13:22:17,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:17,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:17,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:17,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:17,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:17,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:17,937 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 13:22:17,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145507773] [2020-09-25 13:22:17,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:17,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:22:17,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020142212] [2020-09-25 13:22:17,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:22:17,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:17,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:22:17,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:22:17,944 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 7 states. [2020-09-25 13:22:18,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:18,102 INFO L93 Difference]: Finished difference Result 76 states and 109 transitions. [2020-09-25 13:22:18,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:22:18,103 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 13:22:18,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:18,105 INFO L225 Difference]: With dead ends: 76 [2020-09-25 13:22:18,105 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 13:22:18,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:22:18,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 13:22:18,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-25 13:22:18,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 13:22:18,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2020-09-25 13:22:18,118 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 35 [2020-09-25 13:22:18,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:18,119 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-09-25 13:22:18,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:22:18,119 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2020-09-25 13:22:18,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 13:22:18,122 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:18,122 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:18,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:22:18,123 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:18,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:18,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 1 times [2020-09-25 13:22:18,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:18,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053568372] [2020-09-25 13:22:18,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:18,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:21,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:23,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:23,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 13:22:23,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:22:23,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:22:23,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:23,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:23,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:23,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:23,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 13:22:23,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:23,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:23,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:23,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:23,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:23,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:23,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:22:23,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:23,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:23,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:23,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:23,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:23,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:23,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:23,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:23,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:23,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:23,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:23,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:23,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:24,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:26,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:26,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 13:22:26,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:22:26,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3175 [2020-09-25 13:22:26,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:26,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:22:26,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:26,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:26,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:26,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:26,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:26,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:26,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:22:26,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:22:26,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 13:22:26,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:26,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:26,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:26,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:26,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:22:26,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:26,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:26,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:26,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:26,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:26,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:26,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:26,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:26,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:26,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:26,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:26,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:26,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:26,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:22:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:26,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:26,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:26,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:26,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:26,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:26,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:26,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:26,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:26,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:26,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:26,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:26,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:22:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:26,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:26,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:26,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:26,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:26,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:22:26,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:26,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:26,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:26,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:26,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:22:26,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:26,534 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 13:22:26,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053568372] [2020-09-25 13:22:26,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:26,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:22:26,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909182943] [2020-09-25 13:22:26,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:22:26,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:26,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:22:26,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:22:26,537 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 7 states. [2020-09-25 13:22:26,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:26,651 INFO L93 Difference]: Finished difference Result 66 states and 95 transitions. [2020-09-25 13:22:26,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:22:26,652 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 13:22:26,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:26,655 INFO L225 Difference]: With dead ends: 66 [2020-09-25 13:22:26,655 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 13:22:26,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:22:26,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 13:22:26,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 42. [2020-09-25 13:22:26,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 13:22:26,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2020-09-25 13:22:26,667 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 51 [2020-09-25 13:22:26,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:26,667 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2020-09-25 13:22:26,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:22:26,668 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2020-09-25 13:22:26,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 13:22:26,671 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:26,671 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:26,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:22:26,671 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:26,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:26,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1086233509, now seen corresponding path program 2 times [2020-09-25 13:22:26,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:26,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606691347] [2020-09-25 13:22:26,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:26,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:26,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:26,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:26,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:26,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:26,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:29,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:29,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:29,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:29,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:30,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:30,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:30,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:30,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:30,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:30,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:31,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 13:22:31,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 13:22:31,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:22:31,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:31,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:31,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:22:31,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:31,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 13:22:31,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:31,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:31,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:31,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:31,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:31,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:22:31,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:31,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:31,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:31,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:31,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:31,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:31,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:31,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:32,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:32,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:32,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:32,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:33,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:33,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:33,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:36,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:36,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 13:22:36,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:22:36,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 13:22:36,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:36,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:36,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:22:36,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:22:36,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 13:22:36,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:36,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:36,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:36,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:36,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:36,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:36,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:22:36,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:22:36,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-25 13:22:36,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:36,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:36,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:36,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:36,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:22:36,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:36,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:36,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:36,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:36,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:36,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:36,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:22:36,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:36,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:36,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:36,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:36,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:22:36,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:36,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:22:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:36,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:36,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:36,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:36,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:36,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:22:36,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:36,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:36,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:37,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:22:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:37,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:37,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:37,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:37,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:37,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:37,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:37,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:37,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:39,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:39,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 13:22:39,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:22:39,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2357 [2020-09-25 13:22:39,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:39,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:39,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:39,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:39,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:22:39,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:39,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:39,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:39,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:39,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:39,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:22:39,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:39,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 13:22:39,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:39,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:39,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:39,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:39,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:22:39,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:39,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:39,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:39,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:39,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:39,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:39,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:39,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:39,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:39,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:39,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:39,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:39,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:39,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:22:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:39,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:39,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:39,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:39,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:39,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:39,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:39,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:39,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:39,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:39,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:39,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:39,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:22:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:39,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:39,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:39,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:39,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:39,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:22:39,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:39,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:39,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:39,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:39,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:39,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:39,569 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 58 proven. 66 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-09-25 13:22:39,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606691347] [2020-09-25 13:22:39,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:39,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:22:39,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886893976] [2020-09-25 13:22:39,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:22:39,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:39,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:22:39,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:22:39,571 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand 11 states. [2020-09-25 13:22:39,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:39,932 INFO L93 Difference]: Finished difference Result 101 states and 140 transitions. [2020-09-25 13:22:39,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:22:39,933 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 85 [2020-09-25 13:22:39,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:39,941 INFO L225 Difference]: With dead ends: 101 [2020-09-25 13:22:39,941 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 13:22:39,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2020-09-25 13:22:39,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 13:22:39,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-25 13:22:39,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 13:22:39,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-09-25 13:22:39,957 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 85 [2020-09-25 13:22:39,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:39,958 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-09-25 13:22:39,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:22:39,958 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-09-25 13:22:39,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 13:22:39,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:39,964 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:39,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:22:39,965 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:39,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:39,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 3 times [2020-09-25 13:22:39,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:39,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071647691] [2020-09-25 13:22:39,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:39,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:40,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:40,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:40,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:40,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:40,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:40,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:40,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:41,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:41,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:41,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:44,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:44,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 13:22:44,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:22:44,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 13:22:44,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:44,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:44,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:22:44,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:22:44,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 13:22:44,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:45,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:45,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:45,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:45,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:45,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:45,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:22:45,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:45,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:45,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:45,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:45,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:45,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:45,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:45,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:45,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:45,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:45,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:45,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:45,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:46,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:46,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:47,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:47,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:47,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:48,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:48,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:48,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:48,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:48,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:50,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:50,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 13:22:50,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 13:22:50,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 13:22:50,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:50,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:50,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:22:50,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:22:50,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 13:22:50,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:50,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:50,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:50,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:50,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:51,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:51,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 13:22:51,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:22:51,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1413 [2020-09-25 13:22:51,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:51,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:51,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:51,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:51,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 13:22:51,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:51,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:51,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:51,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:51,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:22:51,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:51,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:22:51,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:51,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:51,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:51,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:51,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:22:51,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:51,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:51,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:51,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:51,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:51,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:51,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:51,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:51,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:51,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:51,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:51,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:51,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:51,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:22:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:51,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:51,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:51,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:51,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:51,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:51,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:51,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:51,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:51,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:51,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:51,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:51,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:22:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:51,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:51,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:51,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:51,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:51,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:22:51,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:51,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:51,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:51,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:51,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:22:51,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:51,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 13:22:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:51,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:51,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:51,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:51,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:51,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:51,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:52,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:52,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:52,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:53,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:53,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:53,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:53,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:53,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:56,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:56,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 13:22:56,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 13:22:56,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:22:56,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:56,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:56,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:56,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:56,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 13:22:56,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:56,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:56,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:56,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:56,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 13:22:56,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:56,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 13:22:56,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:56,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:56,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:56,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:56,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 13:22:56,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:56,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:56,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:56,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:56,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:22:56,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:56,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:22:56,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:56,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:56,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:56,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:56,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:56,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:56,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:56,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:56,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:56,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:56,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:56,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:56,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:56,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:56,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:56,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:56,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:56,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:56,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:22:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:56,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:56,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:56,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:56,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:56,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:56,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:56,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:56,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:56,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:56,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:56,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:56,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:22:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:56,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:56,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:56,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:56,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:56,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:56,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:56,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:56,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:56,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:56,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:56,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:56,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 13:22:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:56,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:56,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:56,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:56,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:56,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:56,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:22:56,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:56,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:56,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:56,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:56,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:22:56,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:56,788 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 157 proven. 106 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-09-25 13:22:56,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071647691] [2020-09-25 13:22:56,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:56,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:22:56,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089607804] [2020-09-25 13:22:56,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:22:56,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:56,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:22:56,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:22:56,793 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 10 states. [2020-09-25 13:22:57,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:57,202 INFO L93 Difference]: Finished difference Result 134 states and 186 transitions. [2020-09-25 13:22:57,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:22:57,203 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 123 [2020-09-25 13:22:57,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:57,206 INFO L225 Difference]: With dead ends: 134 [2020-09-25 13:22:57,206 INFO L226 Difference]: Without dead ends: 89 [2020-09-25 13:22:57,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:22:57,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-25 13:22:57,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2020-09-25 13:22:57,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-25 13:22:57,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2020-09-25 13:22:57,218 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 123 [2020-09-25 13:22:57,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:57,219 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2020-09-25 13:22:57,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:22:57,219 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2020-09-25 13:22:57,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 13:22:57,220 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:57,221 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:57,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:22:57,221 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:57,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:57,221 INFO L82 PathProgramCache]: Analyzing trace with hash 866676589, now seen corresponding path program 4 times [2020-09-25 13:22:57,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:57,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482215176] [2020-09-25 13:22:57,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:57,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:57,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:57,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:57,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:59,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:02,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:02,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 13:23:02,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:23:02,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 13:23:02,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:02,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:02,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:02,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:02,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:23:02,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:02,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:02,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:02,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:02,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:02,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:02,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:02,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:23:02,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:02,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:02,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:02,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:02,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:02,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:02,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:02,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:02,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:02,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:02,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:02,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:07,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:07,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 13:23:07,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:23:07,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:23:07,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:07,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:07,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:07,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:07,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 13:23:07,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:07,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:07,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:07,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:07,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 13:23:07,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:07,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 13:23:07,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:07,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 13:23:07,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:07,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:07,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:07,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:07,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:23:07,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:07,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:23:07,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:07,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:07,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:07,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:07,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:07,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:07,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:07,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:07,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:07,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:07,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:07,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:07,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:07,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:07,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:07,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:07,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:07,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:07,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:23:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:07,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:07,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:07,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:07,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:07,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:23:07,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:07,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:07,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:07,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:07,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:07,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:07,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:23:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:07,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:07,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:07,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:07,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:07,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:07,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:07,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:07,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:07,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:07,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:07,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:07,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 13:23:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:07,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:07,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:07,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:07,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:23:07,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:07,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-25 13:23:07,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:07,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:07,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:23:07,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:07,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:23:07,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:07,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:07,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:07,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:07,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:07,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:07,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:23:07,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:07,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:07,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:07,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:07,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:07,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:07,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:23:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:07,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:07,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:07,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:07,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:07,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:23:07,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:07,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:07,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:07,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:07,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:07,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:07,622 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 83 proven. 26 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-09-25 13:23:07,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482215176] [2020-09-25 13:23:07,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:07,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:23:07,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738439539] [2020-09-25 13:23:07,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:23:07,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:07,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:23:07,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:23:07,627 INFO L87 Difference]: Start difference. First operand 72 states and 89 transitions. Second operand 8 states. [2020-09-25 13:23:07,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:07,738 INFO L93 Difference]: Finished difference Result 84 states and 102 transitions. [2020-09-25 13:23:07,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:23:07,739 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-09-25 13:23:07,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:07,742 INFO L225 Difference]: With dead ends: 84 [2020-09-25 13:23:07,742 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 13:23:07,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:23:07,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 13:23:07,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-09-25 13:23:07,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 13:23:07,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 96 transitions. [2020-09-25 13:23:07,753 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 96 transitions. Word has length 87 [2020-09-25 13:23:07,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:07,753 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 96 transitions. [2020-09-25 13:23:07,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:23:07,754 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 96 transitions. [2020-09-25 13:23:07,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 13:23:07,756 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:07,756 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 17, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:07,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:23:07,757 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:07,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:07,757 INFO L82 PathProgramCache]: Analyzing trace with hash 532445701, now seen corresponding path program 5 times [2020-09-25 13:23:07,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:07,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124148290] [2020-09-25 13:23:07,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:07,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:07,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:07,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:07,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:07,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking...