/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:15:41,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:15:41,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:15:41,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:15:41,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:15:41,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:15:41,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:15:41,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:15:41,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:15:41,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:15:41,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:15:41,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:15:41,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:15:41,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:15:41,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:15:41,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:15:41,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:15:41,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:15:41,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:15:41,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:15:41,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:15:41,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:15:41,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:15:41,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:15:41,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:15:41,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:15:41,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:15:41,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:15:41,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:15:41,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:15:41,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:15:41,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:15:41,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:15:41,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:15:41,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:15:41,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:15:41,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:15:41,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:15:41,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:15:41,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:15:41,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:15:41,653 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 12:15:41,685 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:15:41,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:15:41,686 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:15:41,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:15:41,687 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:15:41,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:15:41,687 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:15:41,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:15:41,688 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:15:41,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:15:41,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:15:41,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:15:41,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:15:41,689 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:15:41,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:15:41,689 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:15:41,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:15:41,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:15:41,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:15:41,690 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:15:41,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:15:41,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:15:41,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:15:41,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:15:41,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:15:41,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:15:41,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:15:41,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:15:41,692 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:15:41,692 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:15:42,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:15:42,261 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:15:42,266 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:15:42,268 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:15:42,269 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:15:42,270 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-2.c [2020-09-25 12:15:42,367 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbab920bc/1558b93799ac4caabf2b716b9145003c/FLAG70b40f654 [2020-09-25 12:15:42,966 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:15:42,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_6-2.c [2020-09-25 12:15:42,976 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbab920bc/1558b93799ac4caabf2b716b9145003c/FLAG70b40f654 [2020-09-25 12:15:43,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbab920bc/1558b93799ac4caabf2b716b9145003c [2020-09-25 12:15:43,319 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:15:43,325 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:15:43,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:15:43,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:15:43,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:15:43,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:15:43" (1/1) ... [2020-09-25 12:15:43,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46fcb5ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:43, skipping insertion in model container [2020-09-25 12:15:43,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:15:43" (1/1) ... [2020-09-25 12:15:43,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:15:43,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:15:43,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:15:43,633 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:15:43,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:15:43,668 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:15:43,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:43 WrapperNode [2020-09-25 12:15:43,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:15:43,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:15:43,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:15:43,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:15:43,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:43" (1/1) ... [2020-09-25 12:15:43,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:43" (1/1) ... [2020-09-25 12:15:43,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:43" (1/1) ... [2020-09-25 12:15:43,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:43" (1/1) ... [2020-09-25 12:15:43,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:43" (1/1) ... [2020-09-25 12:15:43,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:43" (1/1) ... [2020-09-25 12:15:43,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:43" (1/1) ... [2020-09-25 12:15:43,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:15:43,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:15:43,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:15:43,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:15:43,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:43" (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 12:15:43,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:15:43,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:15:43,888 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 12:15:43,888 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 12:15:43,889 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:15:43,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:15:43,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:15:43,889 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 12:15:43,889 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 12:15:43,890 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:15:43,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:15:43,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:15:44,117 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:15:44,118 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 12:15:44,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:15:44 BoogieIcfgContainer [2020-09-25 12:15:44,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:15:44,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:15:44,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:15:44,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:15:44,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:15:43" (1/3) ... [2020-09-25 12:15:44,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189bbebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:15:44, skipping insertion in model container [2020-09-25 12:15:44,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:43" (2/3) ... [2020-09-25 12:15:44,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189bbebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:15:44, skipping insertion in model container [2020-09-25 12:15:44,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:15:44" (3/3) ... [2020-09-25 12:15:44,135 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-2.c [2020-09-25 12:15:44,150 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:15:44,179 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:15:44,237 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:15:44,287 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:15:44,288 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:15:44,288 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:15:44,288 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:15:44,288 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:15:44,288 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:15:44,288 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:15:44,288 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:15:44,312 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 12:15:44,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 12:15:44,322 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:44,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:44,325 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:44,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:44,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 12:15:44,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:44,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637905026] [2020-09-25 12:15:44,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:44,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:44,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:44,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:44,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:15:44,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:44,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-09-25 12:15:44,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:44,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:44,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:44,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:15:44,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:44,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:15:44,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:44,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:44,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:44,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:44,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:44,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:15:44,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:44,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:44,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:44,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:44,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:44,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:44,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:44,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:44,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:44,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:44,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:44,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:44,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:15:44,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:44,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:44,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:15:44,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:44,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:15:44,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:44,870 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 12:15:44,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637905026] [2020-09-25 12:15:44,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:15:44,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:15:44,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897332911] [2020-09-25 12:15:44,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:15:44,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:44,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:15:44,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:15:44,899 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 12:15:45,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:45,036 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 12:15:45,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:15:45,038 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 12:15:45,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:45,051 INFO L225 Difference]: With dead ends: 58 [2020-09-25 12:15:45,051 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 12:15:45,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:15:45,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 12:15:45,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 12:15:45,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 12:15:45,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 12:15:45,113 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 12:15:45,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:45,114 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 12:15:45,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:15:45,114 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 12:15:45,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 12:15:45,117 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:45,117 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 12:15:45,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:15:45,118 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:45,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:45,118 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 12:15:45,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:45,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794169767] [2020-09-25 12:15:45,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:45,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:45,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:45,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:45,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 12:15:45,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:45,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 12:15:45,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:45,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:45,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:45,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:45,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:45,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:45,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:45,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:45,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:45,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:45,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:45,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:15:45,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:45,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:45,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:45,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:45,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:45,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 12:15:45,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:45,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:45,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:45,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:45,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:45,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:45,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 12:15:45,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:45,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:45,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:45,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:45,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:45,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:45,442 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 12:15:45,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794169767] [2020-09-25 12:15:45,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:15:45,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:15:45,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325392265] [2020-09-25 12:15:45,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:15:45,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:45,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:15:45,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:15:45,447 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 12:15:45,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:45,536 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 12:15:45,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:15:45,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 12:15:45,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:45,541 INFO L225 Difference]: With dead ends: 50 [2020-09-25 12:15:45,541 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 12:15:45,543 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 12:15:45,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 12:15:45,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 12:15:45,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 12:15:45,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 12:15:45,566 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 12:15:45,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:45,566 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 12:15:45,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:15:45,567 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 12:15:45,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 12:15:45,571 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:45,572 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:45,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:15:45,573 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:45,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:45,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 12:15:45,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:45,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955132836] [2020-09-25 12:15:45,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:45,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:45,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:45,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:45,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:47,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 12:15:47,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:15:47,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2038 [2020-09-25 12:15:47,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:47,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:47,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:47,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:47,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:15:47,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:47,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:47,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:47,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:47,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:47,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:15:47,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:47,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:47,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:47,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:47,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:47,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:47,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:47,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:47,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:15:47,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:15:47,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-25 12:15:47,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:47,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:47,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:15:47,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:47,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:47,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:47,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:47,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:47,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:15:47,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:47,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:47,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:47,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:47,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:47,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:47,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:15:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:47,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:47,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:47,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:47,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:15:47,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:47,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:47,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:47,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:47,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:47,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:48,006 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:15:48,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955132836] [2020-09-25 12:15:48,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:15:48,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:15:48,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315183352] [2020-09-25 12:15:48,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:15:48,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:48,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:15:48,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:15:48,009 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 12:15:48,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:48,184 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 12:15:48,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:15:48,185 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 12:15:48,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:48,187 INFO L225 Difference]: With dead ends: 58 [2020-09-25 12:15:48,187 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 12:15:48,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:15:48,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 12:15:48,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 12:15:48,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 12:15:48,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 12:15:48,199 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 12:15:48,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:48,200 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 12:15:48,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:15:48,200 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 12:15:48,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 12:15:48,202 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:48,202 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:48,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:15:48,203 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:48,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:48,203 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 12:15:48,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:48,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645937984] [2020-09-25 12:15:48,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:48,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:48,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:48,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:48,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:48,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:49,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:49,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 12:15:49,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:15:49,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1731 [2020-09-25 12:15:49,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:49,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:49,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:49,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:49,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 12:15:49,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:49,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:49,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:49,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:49,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:49,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:49,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:15:49,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:49,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:49,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:49,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:49,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:49,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:50,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:50,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:50,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:50,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:15:50,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:15:50,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-09-25 12:15:50,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:50,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:50,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:50,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:50,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:15:50,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:50,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:50,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:50,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:50,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:50,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:50,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:15:50,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:50,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:50,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:50,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:50,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:15:50,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:50,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:15:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:50,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:50,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:50,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:50,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:50,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:15:50,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:50,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:50,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:50,559 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:15:50,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645937984] [2020-09-25 12:15:50,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:15:50,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:15:50,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264718287] [2020-09-25 12:15:50,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:15:50,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:50,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:15:50,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:15:50,562 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 12:15:50,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:50,715 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-09-25 12:15:50,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:15:50,716 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 12:15:50,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:50,718 INFO L225 Difference]: With dead ends: 72 [2020-09-25 12:15:50,718 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 12:15:50,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:15:50,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 12:15:50,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2020-09-25 12:15:50,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 12:15:50,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 12:15:50,731 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 35 [2020-09-25 12:15:50,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:50,731 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 12:15:50,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:15:50,731 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 12:15:50,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 12:15:50,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:50,734 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:50,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:15:50,735 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:50,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:50,735 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 12:15:50,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:50,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886979960] [2020-09-25 12:15:50,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:50,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:50,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:50,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:50,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:50,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:51,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:51,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:54,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:55,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:55,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 12:15:55,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:15:55,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 12:15:55,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:55,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:55,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:55,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:55,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 12:15:55,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:55,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:55,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:55,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:55,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:55,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:55,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:15:55,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:55,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:55,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:55,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:55,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:55,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:55,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:55,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:55,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:55,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:56,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:56,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:56,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:57,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:00,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:00,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 12:16:00,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:16:00,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 12:16:00,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:00,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:00,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:16:00,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:16:00,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 12:16:00,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:00,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:00,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:00,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:00,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:00,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:16:00,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:00,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 12:16:00,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:00,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:00,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:00,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:00,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:16:00,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:00,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:00,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:00,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:00,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:00,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:00,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:16:00,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:00,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:00,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:00,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:00,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:00,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:00,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:16:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:00,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:00,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:00,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:00,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:00,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:16:00,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:00,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:00,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:00,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:00,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:00,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:00,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 12:16:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:00,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:00,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:00,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:16:00,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:00,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:16:00,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:00,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:00,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:00,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:00,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:16:00,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:00,998 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 12:16:00,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886979960] [2020-09-25 12:16:00,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:00,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:16:01,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238771364] [2020-09-25 12:16:01,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:16:01,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:01,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:16:01,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:16:01,002 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 7 states. [2020-09-25 12:16:01,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:01,129 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2020-09-25 12:16:01,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:16:01,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 12:16:01,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:01,132 INFO L225 Difference]: With dead ends: 64 [2020-09-25 12:16:01,132 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 12:16:01,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:16:01,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 12:16:01,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-25 12:16:01,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 12:16:01,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 12:16:01,142 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 51 [2020-09-25 12:16:01,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:01,142 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 12:16:01,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:16:01,142 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 12:16:01,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 12:16:01,145 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:01,145 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:16:01,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:16:01,146 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:01,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:01,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 12:16:01,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:01,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726631316] [2020-09-25 12:16:01,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:01,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:02,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:02,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:02,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:06,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:06,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 12:16:06,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:16:06,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:16:06,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:06,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:06,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:06,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:16:06,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 12:16:06,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:06,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:06,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:06,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:06,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:06,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:06,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:16:06,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:06,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:06,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:06,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:06,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:06,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:06,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:06,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:06,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:06,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:06,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:07,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:07,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:07,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:07,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:07,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:11,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:11,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 12:16:11,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:16:11,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 12:16:11,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:11,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:11,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:11,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 12:16:11,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:16:11,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:11,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:11,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:11,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:11,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:11,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:16:11,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:11,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 12:16:11,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:11,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:11,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:16:11,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:11,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:16:11,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:11,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:11,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:11,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:11,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:11,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:11,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:16:11,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:11,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:11,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:11,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:11,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:16:11,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:11,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:16:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:11,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:11,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:11,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:11,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:11,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:16:11,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:11,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:11,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:11,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:11,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:16:11,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:11,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 12:16:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:11,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:11,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:11,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:11,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:16:11,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:11,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 12:16:11,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:11,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:11,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:16:11,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:16:11,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:16:11,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:11,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:11,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:11,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:11,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:11,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:11,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:16:11,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:11,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:16:11,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:11,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:16:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:11,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:11,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:11,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:11,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:11,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:16:11,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:11,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:11,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:11,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:11,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:16:11,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:11,479 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 12:16:11,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726631316] [2020-09-25 12:16:11,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:11,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:16:11,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817858412] [2020-09-25 12:16:11,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:16:11,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:11,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:16:11,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:16:11,483 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 10 states. [2020-09-25 12:16:11,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:11,838 INFO L93 Difference]: Finished difference Result 128 states and 175 transitions. [2020-09-25 12:16:11,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:16:11,838 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-09-25 12:16:11,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:11,841 INFO L225 Difference]: With dead ends: 128 [2020-09-25 12:16:11,841 INFO L226 Difference]: Without dead ends: 84 [2020-09-25 12:16:11,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:16:11,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-25 12:16:11,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2020-09-25 12:16:11,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 12:16:11,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 95 transitions. [2020-09-25 12:16:11,862 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 95 transitions. Word has length 67 [2020-09-25 12:16:11,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:11,862 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 95 transitions. [2020-09-25 12:16:11,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:16:11,863 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 95 transitions. [2020-09-25 12:16:11,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 12:16:11,866 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:11,866 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:16:11,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:16:11,866 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:11,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:11,867 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 12:16:11,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:11,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614434002] [2020-09-25 12:16:11,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:11,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:11,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:11,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:11,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:11,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:14,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:16,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:16,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:16,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:16,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:16,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 12:16:16,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 12:16:16,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:16:16,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:16,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:16,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:16,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:16:16,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 12:16:16,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:16,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:16,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:16,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:16,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:16,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:16,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:16:16,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:16,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:16,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:16,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:16,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:16,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:16,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:16,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:16,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:16,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:16,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:17,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:17,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:17,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:19,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:19,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:21,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:21,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 12:16:21,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:16:21,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:16:21,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:21,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:21,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:21,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 12:16:21,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 12:16:21,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:21,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:21,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:21,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:22,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:22,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:22,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:16:22,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:16:22,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-09-25 12:16:22,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:22,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:22,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:16:22,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:22,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:16:22,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:22,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:22,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:22,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:22,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:16:22,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:22,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:16:22,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:22,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:22,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:22,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:22,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:16:22,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:22,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:16:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:22,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:22,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:22,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:22,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:22,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:16:22,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:22,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:22,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:22,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:22,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:16:22,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:22,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:16:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:22,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:22,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:22,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:22,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:22,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:16:22,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:16:22,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 12:16:22,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:22,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:22,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:16:22,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:16:22,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:16:22,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:22,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:22,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:22,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:22,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:22,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:16:22,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:22,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:16:22,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:22,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:22,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:22,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:22,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:16:22,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:22,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:16:22,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:22,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:22,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:22,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:22,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:22,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:16:22,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:22,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:22,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:22,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:22,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:16:22,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:22,562 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 12:16:22,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614434002] [2020-09-25 12:16:22,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:22,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:16:22,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046572318] [2020-09-25 12:16:22,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:16:22,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:22,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:16:22,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:16:22,566 INFO L87 Difference]: Start difference. First operand 76 states and 95 transitions. Second operand 9 states. [2020-09-25 12:16:22,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:22,784 INFO L93 Difference]: Finished difference Result 166 states and 226 transitions. [2020-09-25 12:16:22,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:16:22,784 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 12:16:22,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:22,786 INFO L225 Difference]: With dead ends: 166 [2020-09-25 12:16:22,786 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 12:16:22,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:16:22,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 12:16:22,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-09-25 12:16:22,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-25 12:16:22,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 122 transitions. [2020-09-25 12:16:22,801 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 122 transitions. Word has length 69 [2020-09-25 12:16:22,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:22,802 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 122 transitions. [2020-09-25 12:16:22,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:16:22,802 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 122 transitions. [2020-09-25 12:16:22,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-25 12:16:22,805 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:22,805 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:16:22,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:16:22,805 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:22,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:22,806 INFO L82 PathProgramCache]: Analyzing trace with hash -659479355, now seen corresponding path program 1 times [2020-09-25 12:16:22,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:22,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239550145] [2020-09-25 12:16:22,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:22,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:22,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:22,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:22,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:22,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:22,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:24,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:24,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:24,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:24,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:27,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:27,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:27,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-09-25 12:16:27,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 12:16:27,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:16:27,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:27,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:27,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:27,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:16:27,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 12:16:27,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:27,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:27,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:27,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:27,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:27,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:27,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:16:27,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:27,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:27,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:27,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:27,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:27,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:27,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:27,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:27,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:27,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:27,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:27,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:27,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:28,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:28,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:28,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:28,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:30,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:30,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:30,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:32,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:32,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 12:16:32,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 12:16:32,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:16:32,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:32,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:32,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:16:32,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 12:16:32,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 12:16:32,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:32,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:32,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:32,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:32,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:32,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:33,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:33,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:33,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:33,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 12:16:33,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:16:33,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-25 12:16:33,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:33,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:33,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:16:33,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:33,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 12:16:33,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:33,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:33,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:33,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:33,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:33,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:16:33,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:33,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 12:16:33,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:33,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:33,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:33,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:33,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:16:33,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:33,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:33,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:33,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:34,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:34,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:34,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:34,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:16:34,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:34,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:34,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:34,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:34,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:34,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:34,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:16:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:34,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:34,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:34,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:34,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:34,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:16:34,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:34,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:34,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:34,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:34,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:34,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:34,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 12:16:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:34,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:34,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:34,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:34,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:34,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:16:34,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:34,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:34,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:34,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:34,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:16:34,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:34,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 12:16:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:34,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:34,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:34,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:34,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:16:34,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:34,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 12:16:34,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:34,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:34,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:34,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:16:34,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:16:34,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:34,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:34,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:34,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:34,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:34,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:34,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:16:34,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:34,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:34,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:34,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:34,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:16:34,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:34,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:16:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:34,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:34,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:34,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:34,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:34,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:16:34,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:34,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:34,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:34,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:16:34,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:34,297 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-25 12:16:34,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239550145] [2020-09-25 12:16:34,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:34,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:16:34,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115004319] [2020-09-25 12:16:34,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:16:34,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:34,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:16:34,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:16:34,300 INFO L87 Difference]: Start difference. First operand 96 states and 122 transitions. Second operand 11 states. [2020-09-25 12:16:34,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:34,697 INFO L93 Difference]: Finished difference Result 203 states and 296 transitions. [2020-09-25 12:16:34,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:16:34,698 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-09-25 12:16:34,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:34,700 INFO L225 Difference]: With dead ends: 203 [2020-09-25 12:16:34,700 INFO L226 Difference]: Without dead ends: 105 [2020-09-25 12:16:34,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:16:34,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-25 12:16:34,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 93. [2020-09-25 12:16:34,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 12:16:34,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 116 transitions. [2020-09-25 12:16:34,714 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 116 transitions. Word has length 84 [2020-09-25 12:16:34,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:34,715 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 116 transitions. [2020-09-25 12:16:34,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:16:34,715 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 116 transitions. [2020-09-25 12:16:34,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 12:16:34,717 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:34,717 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:16:34,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:16:34,718 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:34,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:34,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1641825993, now seen corresponding path program 1 times [2020-09-25 12:16:34,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:34,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152880377] [2020-09-25 12:16:34,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:34,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:34,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:34,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:34,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:34,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:34,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:35,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:35,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:35,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:35,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:35,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:35,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:35,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:36,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:36,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:37,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking...