/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_7-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:19:35,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:19:35,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:19:35,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:19:35,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:19:35,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:19:35,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:19:35,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:19:35,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:19:35,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:19:35,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:19:35,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:19:35,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:19:35,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:19:35,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:19:35,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:19:35,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:19:35,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:19:35,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:19:35,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:19:35,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:19:35,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:19:35,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:19:35,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:19:35,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:19:35,675 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:19:35,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:19:35,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:19:35,677 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:19:35,678 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:19:35,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:19:35,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:19:35,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:19:35,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:19:35,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:19:35,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:19:35,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:19:35,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:19:35,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:19:35,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:19:35,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:19:35,696 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 04:19:35,720 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:19:35,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:19:35,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:19:35,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:19:35,722 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:19:35,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:19:35,723 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:19:35,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:19:35,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:19:35,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:19:35,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:19:35,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:19:35,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:19:35,724 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:19:35,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:19:35,725 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:19:35,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:19:35,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:19:35,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:19:35,725 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:19:35,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:19:35,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:19:35,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:19:35,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:19:35,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:19:35,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:19:35,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:19:35,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:19:35,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:19:35,727 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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:19:36,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:19:36,243 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:19:36,249 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:19:36,250 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:19:36,252 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:19:36,253 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_7-2.c [2020-09-25 04:19:36,349 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcab67025/998c57c254d74fea9c2e386142d05c69/FLAG5a4ce2197 [2020-09-25 04:19:36,859 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:19:36,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_7-2.c [2020-09-25 04:19:36,869 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcab67025/998c57c254d74fea9c2e386142d05c69/FLAG5a4ce2197 [2020-09-25 04:19:37,218 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcab67025/998c57c254d74fea9c2e386142d05c69 [2020-09-25 04:19:37,232 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:19:37,238 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:19:37,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:19:37,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:19:37,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:19:37,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:19:37" (1/1) ... [2020-09-25 04:19:37,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68e64c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:37, skipping insertion in model container [2020-09-25 04:19:37,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:19:37" (1/1) ... [2020-09-25 04:19:37,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:19:37,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:19:37,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:19:37,492 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:19:37,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:19:37,530 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:19:37,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:37 WrapperNode [2020-09-25 04:19:37,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:19:37,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:19:37,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:19:37,535 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:19:37,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:37" (1/1) ... [2020-09-25 04:19:37,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:37" (1/1) ... [2020-09-25 04:19:37,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:37" (1/1) ... [2020-09-25 04:19:37,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:37" (1/1) ... [2020-09-25 04:19:37,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:37" (1/1) ... [2020-09-25 04:19:37,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:37" (1/1) ... [2020-09-25 04:19:37,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:37" (1/1) ... [2020-09-25 04:19:37,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:19:37,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:19:37,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:19:37,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:19:37,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:37" (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 04:19:37,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:19:37,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:19:37,738 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 04:19:37,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:19:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:19:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:19:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 04:19:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:19:37,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:19:37,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:19:37,944 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:19:37,945 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 04:19:37,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:19:37 BoogieIcfgContainer [2020-09-25 04:19:37,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:19:37,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:19:37,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:19:37,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:19:37,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:19:37" (1/3) ... [2020-09-25 04:19:37,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4cf838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:19:37, skipping insertion in model container [2020-09-25 04:19:37,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:37" (2/3) ... [2020-09-25 04:19:37,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4cf838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:19:37, skipping insertion in model container [2020-09-25 04:19:37,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:19:37" (3/3) ... [2020-09-25 04:19:37,958 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_7-2.c [2020-09-25 04:19:37,967 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:19:37,977 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:19:37,998 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:19:38,030 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:19:38,031 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:19:38,031 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:19:38,031 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:19:38,031 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:19:38,031 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:19:38,032 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:19:38,032 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:19:38,052 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 04:19:38,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 04:19:38,059 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:38,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:38,060 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:38,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:38,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 04:19:38,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:38,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497359492] [2020-09-25 04:19:38,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:38,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:38,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:38,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:38,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:19:38,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:38,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-09-25 04:19:38,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:38,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:38,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:38,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 04:19:38,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:38,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:19:38,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:38,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:38,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:38,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:38,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:38,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:19:38,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:38,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:38,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:38,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:38,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:38,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:38,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:38,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:38,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:38,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:38,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:38,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 04:19:38,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:38,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:38,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:19:38,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:38,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:19:38,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:19:38,669 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 04:19:38,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497359492] [2020-09-25 04:19:38,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:19:38,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:19:38,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542841552] [2020-09-25 04:19:38,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:19:38,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:38,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:19:38,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:19:38,702 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 04:19:38,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:38,786 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 04:19:38,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:19:38,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 04:19:38,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:38,802 INFO L225 Difference]: With dead ends: 44 [2020-09-25 04:19:38,802 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 04:19:38,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:19:38,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 04:19:38,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 04:19:38,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 04:19:38,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 04:19:38,869 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 04:19:38,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:38,869 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 04:19:38,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:19:38,870 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 04:19:38,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 04:19:38,872 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:38,873 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 04:19:38,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:19:38,873 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:38,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:38,874 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 04:19:38,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:38,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849007949] [2020-09-25 04:19:38,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:38,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:38,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:39,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:39,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 04:19:39,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:39,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-25 04:19:39,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:39,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:39,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:39,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:39,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:39,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:39,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:39,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:39,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:39,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:39,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:39,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:19:39,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:39,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:39,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:39,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:39,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:39,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:39,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:39,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:39,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:39,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:39,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:39,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 04:19:39,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:39,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:39,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:39,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:39,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:19:39,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:39,168 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 04:19:39,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849007949] [2020-09-25 04:19:39,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:19:39,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:19:39,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598943773] [2020-09-25 04:19:39,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:19:39,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:39,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:19:39,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:19:39,176 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 04:19:39,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:39,239 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 04:19:39,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:19:39,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 04:19:39,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:39,242 INFO L225 Difference]: With dead ends: 36 [2020-09-25 04:19:39,242 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 04:19:39,243 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 04:19:39,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 04:19:39,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 04:19:39,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 04:19:39,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 04:19:39,252 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 04:19:39,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:39,253 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 04:19:39,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:19:39,253 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 04:19:39,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 04:19:39,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:39,255 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:39,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:19:39,256 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:39,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:39,256 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 04:19:39,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:39,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759342700] [2020-09-25 04:19:39,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:39,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:39,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:39,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:39,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:41,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 04:19:41,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:19:41,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1858 [2020-09-25 04:19:41,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:41,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:41,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:41,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:41,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:19:41,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:41,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:41,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:41,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:41,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:41,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:41,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:41,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:41,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:41,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:41,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:41,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:41,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:41,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:41,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:41,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:19:41,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-09-25 04:19:41,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:41,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:41,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:41,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:41,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:19:41,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:41,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:41,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:41,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:41,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:41,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:19:41,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:41,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:41,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:41,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:41,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:41,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:41,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:41,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:41,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:41,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:41,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:19:41,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:41,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:41,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:19:41,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:41,459 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 04:19:41,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759342700] [2020-09-25 04:19:41,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:41,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:19:41,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728315538] [2020-09-25 04:19:41,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:19:41,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:41,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:19:41,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:19:41,463 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-09-25 04:19:41,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:41,553 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-09-25 04:19:41,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:19:41,554 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-25 04:19:41,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:41,556 INFO L225 Difference]: With dead ends: 44 [2020-09-25 04:19:41,556 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 04:19:41,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:19:41,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 04:19:41,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-09-25 04:19:41,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 04:19:41,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-25 04:19:41,567 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-25 04:19:41,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:41,568 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-25 04:19:41,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:19:41,568 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-25 04:19:41,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 04:19:41,570 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:41,570 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:41,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:19:41,571 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:41,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:41,571 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 04:19:41,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:41,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283831736] [2020-09-25 04:19:41,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:41,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:43,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 04:19:43,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:19:43,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1708 [2020-09-25 04:19:43,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:43,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:43,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:43,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:43,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:19:43,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:43,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:43,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:43,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:43,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:43,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:43,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:43,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:43,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:43,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:43,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:43,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:43,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:43,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:43,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:19:43,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:19:43,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-09-25 04:19:43,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:43,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:43,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:43,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:43,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:19:43,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:43,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:43,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:43,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:43,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:43,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:19:43,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:43,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:43,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:43,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:43,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:19:43,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 04:19:43,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:19:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:43,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:43,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:43,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:43,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:19:43,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:43,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:43,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:43,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:43,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:19:43,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:43,918 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 04:19:43,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283831736] [2020-09-25 04:19:43,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:43,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:19:43,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937376113] [2020-09-25 04:19:43,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:19:43,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:43,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:19:43,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:19:43,922 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 7 states. [2020-09-25 04:19:44,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:44,088 INFO L93 Difference]: Finished difference Result 88 states and 137 transitions. [2020-09-25 04:19:44,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:19:44,089 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 04:19:44,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:44,092 INFO L225 Difference]: With dead ends: 88 [2020-09-25 04:19:44,093 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 04:19:44,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:19:44,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 04:19:44,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-25 04:19:44,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 04:19:44,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 69 transitions. [2020-09-25 04:19:44,109 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 69 transitions. Word has length 35 [2020-09-25 04:19:44,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:44,110 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 69 transitions. [2020-09-25 04:19:44,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:19:44,110 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 69 transitions. [2020-09-25 04:19:44,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 04:19:44,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:44,113 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:44,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:19:44,114 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:44,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:44,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 1 times [2020-09-25 04:19:44,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:44,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932316401] [2020-09-25 04:19:44,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:44,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:44,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:44,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:44,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:44,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:44,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:44,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:49,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:49,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 04:19:49,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:19:49,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:19:49,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:49,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:49,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:49,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:49,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 04:19:49,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:49,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:49,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:49,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:49,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:49,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:49,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:49,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:49,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:49,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:49,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:49,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:49,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:49,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:49,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:49,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:49,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:49,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:49,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:49,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:49,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:52,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 04:19:52,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:19:52,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3253 [2020-09-25 04:19:52,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:52,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:52,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:52,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:52,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 04:19:52,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:52,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:52,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:52,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:52,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:19:52,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 04:19:52,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:52,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:52,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:52,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:52,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:19:52,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:52,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:52,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:52,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:52,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:52,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:19:52,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:52,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:52,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:52,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:52,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:52,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:19:52,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:52,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:52,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:52,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:52,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:52,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:52,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:52,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:52,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:52,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:52,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:52,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:19:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:52,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:52,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:52,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:52,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 04:19:52,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:52,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:52,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:52,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:52,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:19:52,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:19:52,640 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 04:19:52,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932316401] [2020-09-25 04:19:52,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:52,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:19:52,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353757640] [2020-09-25 04:19:52,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:19:52,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:52,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:19:52,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:19:52,644 INFO L87 Difference]: Start difference. First operand 50 states and 69 transitions. Second operand 7 states. [2020-09-25 04:19:52,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:52,763 INFO L93 Difference]: Finished difference Result 68 states and 91 transitions. [2020-09-25 04:19:52,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:19:52,764 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 04:19:52,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:52,766 INFO L225 Difference]: With dead ends: 68 [2020-09-25 04:19:52,766 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 04:19:52,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:19:52,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 04:19:52,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 50. [2020-09-25 04:19:52,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 04:19:52,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 69 transitions. [2020-09-25 04:19:52,778 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 69 transitions. Word has length 51 [2020-09-25 04:19:52,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:52,779 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 69 transitions. [2020-09-25 04:19:52,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:19:52,779 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 69 transitions. [2020-09-25 04:19:52,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 04:19:52,784 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:52,784 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:52,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:19:52,785 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:52,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:52,785 INFO L82 PathProgramCache]: Analyzing trace with hash 809102171, now seen corresponding path program 2 times [2020-09-25 04:19:52,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:52,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281120025] [2020-09-25 04:19:52,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:52,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:54,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:55,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:55,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:55,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:55,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:55,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:57,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:57,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:57,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:57,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:57,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 04:19:57,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 04:19:57,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 04:19:57,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:57,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:57,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:57,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 04:19:57,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:19:57,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:57,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:57,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:57,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:57,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:57,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:57,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:57,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:57,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:57,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:57,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:57,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:57,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:57,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:57,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:57,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:57,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:57,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:58,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:58,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:58,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:58,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:00,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:02,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:02,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 04:20:02,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:20:02,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:20:02,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:02,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:02,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:20:02,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 04:20:02,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:20:02,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:02,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:02,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:02,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:02,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:02,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:20:02,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:02,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 04:20:02,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:02,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:02,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:02,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:02,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:02,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:02,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:02,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:02,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:02,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:02,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:02,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:20:02,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:02,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:02,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:02,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:02,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:02,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:02,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:20:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:02,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:02,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:02,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:02,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:02,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:20:02,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:02,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:02,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:02,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:02,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:02,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:02,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:20:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:02,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:02,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:03,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:03,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 04:20:03,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:03,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-09-25 04:20:03,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:03,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:20:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 04:20:03,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:20:03,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:03,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:03,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:03,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:03,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:20:03,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:03,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:20:03,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:03,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:03,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:20:03,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:03,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:20:03,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:03,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:20:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:03,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:03,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:03,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:03,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:20:03,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:03,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 04:20:03,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:03,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:03,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:20:03,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:20:03,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:20:03,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:03,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:03,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:03,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:03,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:03,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:03,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:20:03,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:03,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:03,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:20:03,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:03,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:20:03,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:03,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:20:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:03,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:03,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:03,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:03,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:03,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:20:03,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:03,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:03,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:20:03,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:03,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:20:03,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:03,505 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 91 proven. 14 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-09-25 04:20:03,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281120025] [2020-09-25 04:20:03,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:03,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:20:03,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688139938] [2020-09-25 04:20:03,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:20:03,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:03,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:20:03,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:20:03,508 INFO L87 Difference]: Start difference. First operand 50 states and 69 transitions. Second operand 7 states. [2020-09-25 04:20:03,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:03,627 INFO L93 Difference]: Finished difference Result 102 states and 156 transitions. [2020-09-25 04:20:03,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:20:03,628 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 85 [2020-09-25 04:20:03,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:03,630 INFO L225 Difference]: With dead ends: 102 [2020-09-25 04:20:03,630 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 04:20:03,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 04:20:03,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 04:20:03,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-09-25 04:20:03,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 04:20:03,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2020-09-25 04:20:03,640 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 85 [2020-09-25 04:20:03,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:03,640 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2020-09-25 04:20:03,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:20:03,641 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2020-09-25 04:20:03,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 04:20:03,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:03,643 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:03,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:20:03,644 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:03,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:03,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1086233509, now seen corresponding path program 3 times [2020-09-25 04:20:03,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:03,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636453379] [2020-09-25 04:20:03,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:03,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:03,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:03,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:03,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:03,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:03,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:06,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:06,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:06,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:06,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:07,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:07,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:07,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:07,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:07,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:07,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:07,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:07,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:08,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:08,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 04:20:08,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 04:20:08,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 04:20:08,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:08,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:08,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:08,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 04:20:08,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:20:08,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:08,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:08,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:08,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:08,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:08,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:08,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:20:08,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:08,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:08,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:08,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:08,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:08,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:08,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:20:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:08,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:08,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:08,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:08,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:08,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:08,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:09,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:09,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:09,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:09,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:09,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:09,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:11,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:13,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:13,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 04:20:13,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 04:20:13,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:20:13,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:13,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:13,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:13,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:20:13,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:20:13,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:13,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:13,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:13,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:13,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:20:13,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:13,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 04:20:13,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:13,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:13,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:13,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 04:20:13,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:20:13,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:13,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:13,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:13,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:13,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:13,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:13,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:20:13,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:13,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:13,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:20:13,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:20:13,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:20:13,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:13,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:20:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:13,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:13,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:13,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:13,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:13,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:20:13,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:13,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:13,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:13,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:20:13,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:13,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:13,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:20:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:13,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:13,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:13,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:13,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:14,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:14,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:14,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 04:20:14,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:20:14,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 944 [2020-09-25 04:20:14,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:14,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:14,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:14,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 04:20:14,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:14,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:14,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:14,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:14,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:14,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:14,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:20:14,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:14,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 04:20:14,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:14,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:14,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:14,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:14,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:14,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:14,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:14,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:14,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:14,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:14,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:14,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:20:14,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:14,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:14,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:14,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:14,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:14,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:14,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:20:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:14,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:14,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:14,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:14,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:14,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:20:14,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:14,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:14,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:14,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:14,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:14,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:14,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:20:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:14,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:14,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:14,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:20:14,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:14,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:20:14,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:14,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:14,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:14,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:14,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:14,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:14,866 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 30 proven. 52 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-09-25 04:20:14,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636453379] [2020-09-25 04:20:14,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:14,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:20:14,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127119564] [2020-09-25 04:20:14,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:20:14,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:14,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:20:14,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:20:14,869 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand 6 states. [2020-09-25 04:20:14,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:14,969 INFO L93 Difference]: Finished difference Result 76 states and 98 transitions. [2020-09-25 04:20:14,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:20:14,971 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-09-25 04:20:14,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:14,972 INFO L225 Difference]: With dead ends: 76 [2020-09-25 04:20:14,972 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 04:20:14,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:20:14,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 04:20:14,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-25 04:20:14,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 04:20:14,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 04:20:14,985 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 85 [2020-09-25 04:20:14,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:14,985 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 04:20:14,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:20:14,986 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 04:20:14,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 04:20:14,988 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:14,988 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:14,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:20:14,989 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:14,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:14,990 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 4 times [2020-09-25 04:20:14,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:14,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392237919] [2020-09-25 04:20:14,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:15,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:15,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:15,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:15,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:15,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:15,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:15,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:15,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:17,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:17,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:20,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 04:20:20,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:20:20,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:20:20,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:20,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:20:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:20:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:20:20,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:20,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:20,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:20,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:20,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:20,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:20:20,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:20,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:20,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:20,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:20,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:20,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:20,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:20:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:20,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:21,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:21,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:25,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:25,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 04:20:25,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 04:20:25,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:20:25,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:25,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:25,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:20:25,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 04:20:25,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:20:25,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:25,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:25,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:25,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:25,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:25,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:25,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:20:25,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:20:25,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-09-25 04:20:25,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:25,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:25,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:20:25,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:25,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:20:25,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:25,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:25,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:25,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:25,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:20:25,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:25,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 04:20:25,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:25,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:20:25,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:25,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:20:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:25,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:25,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:25,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:25,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:25,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:20:25,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:25,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:25,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:20:25,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:25,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:20:25,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:25,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:20:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:25,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:25,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:25,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:25,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:25,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:25,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:27,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:27,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 04:20:27,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:20:27,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1655 [2020-09-25 04:20:27,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:27,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:27,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:20:27,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:20:27,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 04:20:27,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:27,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:27,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:27,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:27,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:20:27,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:27,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 04:20:27,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:27,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:27,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:20:27,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:27,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 04:20:27,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:27,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:27,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:27,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:27,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:20:27,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:27,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:20:27,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:27,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:27,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:27,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:27,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:27,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:27,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:20:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:27,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:27,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:27,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:27,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:27,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:20:27,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:27,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:27,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:27,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:27,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:27,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:27,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:20:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:27,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:27,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:27,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:20:27,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:27,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:20:27,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:27,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:27,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:20:27,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:27,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:20:27,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:27,353 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 57 proven. 74 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-25 04:20:27,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392237919] [2020-09-25 04:20:27,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:27,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 04:20:27,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199954906] [2020-09-25 04:20:27,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:20:27,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:27,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:20:27,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:20:27,355 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 9 states. [2020-09-25 04:20:27,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:27,552 INFO L93 Difference]: Finished difference Result 91 states and 115 transitions. [2020-09-25 04:20:27,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 04:20:27,553 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-09-25 04:20:27,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:27,554 INFO L225 Difference]: With dead ends: 91 [2020-09-25 04:20:27,554 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 04:20:27,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-25 04:20:27,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 04:20:27,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2020-09-25 04:20:27,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 04:20:27,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2020-09-25 04:20:27,562 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 87 [2020-09-25 04:20:27,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:27,563 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2020-09-25 04:20:27,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:20:27,563 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2020-09-25 04:20:27,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 04:20:27,564 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:27,564 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:27,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:20:27,565 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:27,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:27,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 5 times [2020-09-25 04:20:27,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:27,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782883691] [2020-09-25 04:20:27,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:27,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:27,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:27,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:27,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:27,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:27,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:28,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:28,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:28,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:29,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:29,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking...