/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_2calls_5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:23:13,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:23:13,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:23:13,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:23:13,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:23:13,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:23:13,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:23:13,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:23:13,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:23:13,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:23:13,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:23:13,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:23:13,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:23:13,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:23:13,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:23:13,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:23:13,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:23:13,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:23:13,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:23:13,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:23:13,966 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:23:13,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:23:13,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:23:13,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:23:13,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:23:13,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:23:13,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:23:13,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:23:13,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:23:13,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:23:13,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:23:13,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:23:13,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:23:13,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:23:13,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:23:13,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:23:13,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:23:13,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:23:13,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:23:13,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:23:14,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:23:14,003 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 13:23:14,061 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:23:14,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:23:14,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:23:14,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:23:14,067 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:23:14,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:23:14,067 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:23:14,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:23:14,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:23:14,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:23:14,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:23:14,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:23:14,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:23:14,072 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:23:14,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:23:14,072 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:23:14,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:23:14,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:23:14,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:23:14,073 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:23:14,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:23:14,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:23:14,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:23:14,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:23:14,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:23:14,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:23:14,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:23:14,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:23:14,076 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:23:14,076 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 13:23:14,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:23:14,575 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:23:14,579 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:23:14,581 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:23:14,582 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:23:14,583 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c [2020-09-25 13:23:14,677 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5832c8967/b186027ec639494ab854e4bda0790705/FLAG4ab0d8688 [2020-09-25 13:23:15,214 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:23:15,215 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c [2020-09-25 13:23:15,225 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5832c8967/b186027ec639494ab854e4bda0790705/FLAG4ab0d8688 [2020-09-25 13:23:15,557 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5832c8967/b186027ec639494ab854e4bda0790705 [2020-09-25 13:23:15,570 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:23:15,577 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:23:15,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:23:15,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:23:15,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:23:15,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:23:15" (1/1) ... [2020-09-25 13:23:15,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cc40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:15, skipping insertion in model container [2020-09-25 13:23:15,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:23:15" (1/1) ... [2020-09-25 13:23:15,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:23:15,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:23:15,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:23:15,853 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:23:15,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:23:15,889 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:23:15,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:15 WrapperNode [2020-09-25 13:23:15,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:23:15,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:23:15,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:23:15,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:23:15,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:15" (1/1) ... [2020-09-25 13:23:15,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:15" (1/1) ... [2020-09-25 13:23:15,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:15" (1/1) ... [2020-09-25 13:23:15,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:15" (1/1) ... [2020-09-25 13:23:16,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:15" (1/1) ... [2020-09-25 13:23:16,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:15" (1/1) ... [2020-09-25 13:23:16,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:15" (1/1) ... [2020-09-25 13:23:16,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:23:16,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:23:16,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:23:16,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:23:16,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:15" (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 13:23:16,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:23:16,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:23:16,087 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 13:23:16,087 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 13:23:16,088 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:23:16,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:23:16,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:23:16,088 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 13:23:16,088 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 13:23:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:23:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:23:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:23:16,353 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:23:16,353 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 13:23:16,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:23:16 BoogieIcfgContainer [2020-09-25 13:23:16,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:23:16,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:23:16,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:23:16,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:23:16,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:23:15" (1/3) ... [2020-09-25 13:23:16,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75437766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:23:16, skipping insertion in model container [2020-09-25 13:23:16,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:15" (2/3) ... [2020-09-25 13:23:16,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75437766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:23:16, skipping insertion in model container [2020-09-25 13:23:16,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:23:16" (3/3) ... [2020-09-25 13:23:16,375 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-1.c [2020-09-25 13:23:16,389 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:23:16,406 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:23:16,439 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:23:16,481 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:23:16,482 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:23:16,482 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:23:16,482 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:23:16,482 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:23:16,482 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:23:16,482 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:23:16,483 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:23:16,533 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 13:23:16,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 13:23:16,541 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:16,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:16,543 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:16,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:16,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 13:23:16,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:16,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145520547] [2020-09-25 13:23:16,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:16,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:16,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:16,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:16,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:23:16,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:16,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 13:23:16,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:16,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:16,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:16,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:16,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:23:16,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:23:16,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:16,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:16,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:16,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:16,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:16,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:23:16,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:16,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:16,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:16,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:16,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:16,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:16,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:16,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:16,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:16,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:16,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:16,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:23:16,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:16,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:16,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:16,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:16,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:16,883 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 13:23:16,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145520547] [2020-09-25 13:23:16,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:23:16,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:23:16,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576772501] [2020-09-25 13:23:16,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:23:16,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:16,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:23:16,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:23:16,918 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 13:23:17,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:17,054 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 13:23:17,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:23:17,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 13:23:17,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:17,072 INFO L225 Difference]: With dead ends: 58 [2020-09-25 13:23:17,072 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 13:23:17,077 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 13:23:17,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 13:23:17,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 13:23:17,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 13:23:17,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 13:23:17,146 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 13:23:17,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:17,146 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 13:23:17,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:23:17,147 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 13:23:17,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 13:23:17,149 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:17,150 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 13:23:17,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:23:17,150 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:17,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:17,151 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 13:23:17,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:17,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925960566] [2020-09-25 13:23:17,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:17,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:17,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:17,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:23:17,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:17,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 13:23:17,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:17,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:17,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:17,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:17,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:17,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:17,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:17,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:17,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:17,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:17,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:17,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:17,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:17,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:17,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:17,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:17,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:17,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:17,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:17,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:17,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:17,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:17,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:17,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 13:23:17,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:17,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:17,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:17,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:17,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:17,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:17,424 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 13:23:17,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925960566] [2020-09-25 13:23:17,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:23:17,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:23:17,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311675116] [2020-09-25 13:23:17,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:23:17,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:17,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:23:17,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:23:17,429 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 13:23:17,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:17,541 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 13:23:17,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:23:17,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 13:23:17,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:17,547 INFO L225 Difference]: With dead ends: 50 [2020-09-25 13:23:17,547 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 13:23:17,550 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 13:23:17,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 13:23:17,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 13:23:17,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 13:23:17,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 13:23:17,569 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 13:23:17,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:17,569 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 13:23:17,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:23:17,570 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 13:23:17,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 13:23:17,573 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:17,574 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:17,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:23:17,574 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:17,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:17,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 13:23:17,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:17,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612671946] [2020-09-25 13:23:17,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:17,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:17,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:17,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:18,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:18,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 13:23:18,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:23:18,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 565 [2020-09-25 13:23:18,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:18,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:18,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:18,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:18,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:23:18,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:23:18,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:18,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:18,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:18,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:18,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:18,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:23:18,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:18,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:18,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:18,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:18,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:18,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:18,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:18,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:18,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:18,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:18,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:18,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:18,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:23:18,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-09-25 13:23:18,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:18,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:18,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:18,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:18,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:18,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:18,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:18,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:18,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:18,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:18,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:18,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:23:18,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:18,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:18,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:18,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:18,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:18,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:18,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:18,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:18,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:18,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:18,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:18,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:23:18,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:18,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:18,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:18,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:18,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:18,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:23:18,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612671946] [2020-09-25 13:23:18,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:23:18,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:23:18,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227192970] [2020-09-25 13:23:18,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:23:18,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:18,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:23:18,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:23:18,605 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 13:23:18,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:18,760 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 13:23:18,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:23:18,760 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 13:23:18,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:18,763 INFO L225 Difference]: With dead ends: 58 [2020-09-25 13:23:18,763 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 13:23:18,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:23:18,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 13:23:18,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 13:23:18,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 13:23:18,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 13:23:18,776 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 13:23:18,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:18,776 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 13:23:18,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:23:18,776 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 13:23:18,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 13:23:18,778 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:18,779 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:18,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:23:18,779 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:18,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:18,780 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 13:23:18,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:18,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774165315] [2020-09-25 13:23:18,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:18,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:18,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:18,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:19,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 13:23:19,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:23:19,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-09-25 13:23:19,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:19,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:19,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:19,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:19,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 13:23:19,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:19,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:19,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:19,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:19,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:19,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:23:19,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:19,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:19,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:19,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:19,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-09-25 13:23:19,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:19,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:19,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:23:19,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:23:19,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-09-25 13:23:19,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:19,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:23:19,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:19,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:19,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:19,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:19,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:19,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:23:19,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:19,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:19,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:19,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:19,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:23:19,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:19,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:23:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:19,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:19,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:19,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:19,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:23:19,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:19,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:19,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:19,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:19,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:19,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:19,865 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:23:19,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774165315] [2020-09-25 13:23:19,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:19,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:23:19,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275554216] [2020-09-25 13:23:19,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:23:19,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:19,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:23:19,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:23:19,868 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 13:23:19,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:19,989 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2020-09-25 13:23:19,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:23:19,990 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 13:23:19,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:19,992 INFO L225 Difference]: With dead ends: 110 [2020-09-25 13:23:19,992 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 13:23:19,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:23:19,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 13:23:20,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 13:23:20,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 13:23:20,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 13:23:20,008 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 35 [2020-09-25 13:23:20,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:20,009 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 13:23:20,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:23:20,009 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 13:23:20,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 13:23:20,013 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:20,013 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:20,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:23:20,014 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:20,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:20,014 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 13:23:20,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:20,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239498295] [2020-09-25 13:23:20,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:20,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:20,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:20,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:20,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:20,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:20,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:20,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:25,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 13:23:25,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:23:25,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 13:23:25,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:25,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:25,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:25,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:25,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 13:23:25,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:25,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:25,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:25,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:25,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:25,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:23:25,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:25,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:25,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:25,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:25,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:25,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:25,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:25,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:28,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:28,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 13:23:28,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:23:28,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3371 [2020-09-25 13:23:28,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:28,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:28,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:28,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:28,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:23:28,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:28,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:28,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:28,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:28,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:28,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:28,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:28,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 13:23:28,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:28,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:28,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:28,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:28,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:28,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:28,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:28,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:28,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:28,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:28,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:28,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:28,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:28,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:28,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:28,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:28,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:28,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:28,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:28,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:28,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:28,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:28,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:28,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:23:28,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:28,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:28,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:28,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:28,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:28,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:28,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:23:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:28,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:28,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:28,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:28,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:28,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:23:28,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:28,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:28,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:23:28,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:23:28,649 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 13:23:28,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239498295] [2020-09-25 13:23:28,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:28,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:23:28,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519934546] [2020-09-25 13:23:28,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:23:28,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:28,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:23:28,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:23:28,652 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 7 states. [2020-09-25 13:23:28,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:28,820 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2020-09-25 13:23:28,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:23:28,821 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 13:23:28,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:28,828 INFO L225 Difference]: With dead ends: 66 [2020-09-25 13:23:28,829 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 13:23:28,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:23:28,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 13:23:28,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-25 13:23:28,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 13:23:28,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 13:23:28,855 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 51 [2020-09-25 13:23:28,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:28,857 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 13:23:28,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:23:28,857 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 13:23:28,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 13:23:28,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:28,867 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:28,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:23:28,867 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:28,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:28,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 13:23:28,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:28,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640903238] [2020-09-25 13:23:28,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:28,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:28,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:28,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:28,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:29,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:29,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:29,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:29,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:29,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:29,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:33,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:33,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 13:23:33,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:23:33,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 13:23:33,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:33,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:33,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:33,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:33,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 13:23:33,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:33,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:33,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:33,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:33,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:33,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:33,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:23:33,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:33,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:33,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:33,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:33,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:33,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:33,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:33,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:33,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:33,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:33,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:34,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:34,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:34,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:35,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:35,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:38,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:38,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 13:23:38,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:23:38,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:23:38,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:38,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:38,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:38,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:23:38,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 13:23:38,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:38,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:38,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:38,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:38,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:38,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:38,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:38,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 13:23:38,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:38,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:38,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:38,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:38,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:23:38,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:39,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:39,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:39,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:39,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:39,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:39,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:23:39,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:39,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:39,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:39,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:39,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:39,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:39,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:39,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:39,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:39,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:23:39,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:39,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:39,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:39,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:39,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:39,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:39,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:23:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:39,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:39,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:39,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:39,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:39,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:39,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 13:23:39,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:39,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:39,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:39,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:39,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:39,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:39,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:39,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:39,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:39,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:39,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:39,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:23:39,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:39,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:39,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:39,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:39,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:39,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:39,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:39,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:39,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:39,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:39,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:39,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:23:39,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:39,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:39,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:39,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:39,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:39,184 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 13:23:39,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640903238] [2020-09-25 13:23:39,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:39,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:23:39,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936583521] [2020-09-25 13:23:39,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:23:39,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:39,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:23:39,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:23:39,186 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 10 states. [2020-09-25 13:23:39,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:39,505 INFO L93 Difference]: Finished difference Result 136 states and 191 transitions. [2020-09-25 13:23:39,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:23:39,506 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-09-25 13:23:39,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:39,508 INFO L225 Difference]: With dead ends: 136 [2020-09-25 13:23:39,508 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 13:23:39,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:23:39,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 13:23:39,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 76. [2020-09-25 13:23:39,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 13:23:39,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 95 transitions. [2020-09-25 13:23:39,522 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 95 transitions. Word has length 67 [2020-09-25 13:23:39,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:39,522 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 95 transitions. [2020-09-25 13:23:39,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:23:39,523 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 95 transitions. [2020-09-25 13:23:39,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 13:23:39,525 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:39,525 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:39,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:23:39,525 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:39,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:39,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1454118782, now seen corresponding path program 1 times [2020-09-25 13:23:39,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:39,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393611139] [2020-09-25 13:23:39,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:39,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:39,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:39,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:39,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:40,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:40,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:40,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:40,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:40,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:41,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:41,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:43,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:43,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:44,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:44,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 13:23:44,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:23:44,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 13:23:44,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:44,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:44,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:44,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:23:44,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 13:23:44,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:44,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:44,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:44,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:44,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:44,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:44,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:23:44,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:44,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:44,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:44,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:44,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:44,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:44,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:44,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:44,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:44,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:44,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:44,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:44,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:44,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:44,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:45,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:49,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:49,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:23:49,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:23:49,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:23:49,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:49,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:23:49,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 13:23:49,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:49,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:49,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:49,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:49,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:49,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:49,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:23:49,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:23:49,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-09-25 13:23:49,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:49,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:49,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:49,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:49,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:23:49,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:49,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:49,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:49,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:49,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:49,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:49,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:23:49,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:49,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:49,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:23:49,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:50,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:23:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:50,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:50,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:50,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:50,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:50,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:23:50,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:50,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:50,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:50,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:50,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:50,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:50,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:23:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:50,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:50,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:50,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:50,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:50,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:50,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 13:23:50,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:50,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:50,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:50,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:50,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:50,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:50,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:50,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:50,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:50,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:50,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:50,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:23:50,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:50,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:50,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:50,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:50,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:50,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:50,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:50,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:50,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:50,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:50,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:50,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:23:50,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:50,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:50,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:50,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:50,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:50,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:50,206 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 13:23:50,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393611139] [2020-09-25 13:23:50,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:50,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:23:50,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057590440] [2020-09-25 13:23:50,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:23:50,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:50,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:23:50,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:23:50,208 INFO L87 Difference]: Start difference. First operand 76 states and 95 transitions. Second operand 9 states. [2020-09-25 13:23:50,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:50,396 INFO L93 Difference]: Finished difference Result 166 states and 226 transitions. [2020-09-25 13:23:50,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:23:50,397 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-09-25 13:23:50,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:50,399 INFO L225 Difference]: With dead ends: 166 [2020-09-25 13:23:50,399 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 13:23:50,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:23:50,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 13:23:50,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-09-25 13:23:50,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-25 13:23:50,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 122 transitions. [2020-09-25 13:23:50,414 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 122 transitions. Word has length 68 [2020-09-25 13:23:50,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:50,414 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 122 transitions. [2020-09-25 13:23:50,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:23:50,414 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 122 transitions. [2020-09-25 13:23:50,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-25 13:23:50,416 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:50,416 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:50,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:23:50,417 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:50,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:50,417 INFO L82 PathProgramCache]: Analyzing trace with hash -659479355, now seen corresponding path program 1 times [2020-09-25 13:23:50,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:50,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555102238] [2020-09-25 13:23:50,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:50,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:50,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:50,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:50,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:50,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:50,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:50,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:50,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:50,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:51,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:51,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:51,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:55,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:55,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-09-25 13:23:55,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 13:23:55,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:23:55,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:55,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:55,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:55,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:55,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 13:23:55,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:55,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:55,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:55,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:55,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:55,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:55,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:23:55,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:55,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:55,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:55,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:55,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:55,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:55,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:55,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:55,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:55,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:55,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:55,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:55,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:55,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:55,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:56,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:56,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:56,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:56,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:56,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:56,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:56,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:56,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:57,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:00,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:00,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 13:24:00,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-09-25 13:24:00,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 13:24:00,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:00,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:00,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:24:00,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:24:00,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 13:24:00,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:00,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:24:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:00,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:00,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:00,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:00,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:00,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:00,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:01,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:01,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 13:24:01,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:24:01,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1067 [2020-09-25 13:24:01,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:01,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:01,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:24:01,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:01,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:24:01,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:01,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:24:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:01,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:01,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:01,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:01,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:24:01,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:24:01,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 13:24:01,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:01,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:01,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:24:01,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:01,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:24:01,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:01,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:24:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:01,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:01,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:01,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:01,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:01,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:24:01,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:01,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:01,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:01,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:01,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:01,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:01,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:24:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:01,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:01,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:01,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:01,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:01,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:24:01,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:01,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:01,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:01,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:24:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:01,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:01,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:01,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:01,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:01,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:24:01,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:01,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:01,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:24:01,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:01,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:24:01,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:01,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:24:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:01,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:01,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:01,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:01,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:24:01,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:24:01,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 13:24:01,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:01,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:01,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:24:01,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:24:01,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:24:01,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:01,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:24:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:01,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:01,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:01,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:01,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:01,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:24:01,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:01,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:01,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:24:01,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:01,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:24:01,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:01,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:24:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:01,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:01,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:01,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:01,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:01,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:24:01,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:01,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:01,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:24:01,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:01,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:24:01,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:01,849 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-25 13:24:01,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555102238] [2020-09-25 13:24:01,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:24:01,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:24:01,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913867039] [2020-09-25 13:24:01,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:24:01,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:24:01,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:24:01,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:24:01,852 INFO L87 Difference]: Start difference. First operand 96 states and 122 transitions. Second operand 11 states. [2020-09-25 13:24:02,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:24:02,300 INFO L93 Difference]: Finished difference Result 203 states and 296 transitions. [2020-09-25 13:24:02,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:24:02,301 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-09-25 13:24:02,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:24:02,303 INFO L225 Difference]: With dead ends: 203 [2020-09-25 13:24:02,303 INFO L226 Difference]: Without dead ends: 105 [2020-09-25 13:24:02,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:24:02,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-25 13:24:02,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 93. [2020-09-25 13:24:02,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 13:24:02,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 116 transitions. [2020-09-25 13:24:02,323 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 116 transitions. Word has length 84 [2020-09-25 13:24:02,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:24:02,323 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 116 transitions. [2020-09-25 13:24:02,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:24:02,323 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 116 transitions. [2020-09-25 13:24:02,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 13:24:02,325 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:24:02,325 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:24:02,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:24:02,326 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:24:02,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:24:02,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1641825993, now seen corresponding path program 1 times [2020-09-25 13:24:02,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:24:02,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809644983] [2020-09-25 13:24:02,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:24:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:02,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:02,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:02,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:02,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:02,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:02,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:02,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:02,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:03,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:03,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:03,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:03,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:03,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:04,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:04,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:05,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:07,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:07,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 13:24:07,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 13:24:07,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 13:24:07,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:07,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:07,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:24:07,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:24:07,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 13:24:07,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:07,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:24:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:07,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:07,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:07,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:24:07,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:07,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:24:07,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:07,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:07,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:07,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:07,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:07,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:07,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:24:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:07,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:07,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:07,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:07,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:07,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:07,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:08,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:08,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:08,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:08,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:08,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:08,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:08,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:08,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:09,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:10,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:10,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking...