/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=SMALLEST --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_8-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:13:41,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:13:41,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:13:41,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:13:41,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:13:41,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:13:41,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:13:41,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:13:41,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:13:41,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:13:41,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:13:41,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:13:41,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:13:41,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:13:41,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:13:41,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:13:41,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:13:41,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:13:41,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:13:41,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:13:41,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:13:41,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:13:41,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:13:41,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:13:41,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:13:41,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:13:41,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:13:41,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:13:41,618 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:13:41,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:13:41,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:13:41,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:13:41,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:13:41,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:13:41,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:13:41,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:13:41,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:13:41,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:13:41,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:13:41,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:13:41,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:13:41,631 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 [2020-09-24 18:13:41,692 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:13:41,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:13:41,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:13:41,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:13:41,695 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:13:41,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:13:41,697 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:13:41,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:13:41,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:13:41,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:13:41,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:13:41,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:13:41,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:13:41,699 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:13:41,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:13:41,699 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:13:41,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:13:41,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:13:41,700 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:13:41,701 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:13:41,701 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:13:41,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:13:41,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:13:41,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:13:41,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:13:41,702 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:13:41,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:13:41,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:13:41,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:13:41,703 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:13:42,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:13:42,251 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:13:42,256 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:13:42,258 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:13:42,259 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:13:42,260 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-1.c [2020-09-24 18:13:42,352 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdaa309ae/f28a5d3c20ac4fc39057b3489ba974d2/FLAGc5cb58a6e [2020-09-24 18:13:42,861 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:13:42,862 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_8-1.c [2020-09-24 18:13:42,870 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdaa309ae/f28a5d3c20ac4fc39057b3489ba974d2/FLAGc5cb58a6e [2020-09-24 18:13:43,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdaa309ae/f28a5d3c20ac4fc39057b3489ba974d2 [2020-09-24 18:13:43,214 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:13:43,220 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:13:43,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:13:43,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:13:43,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:13:43,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:13:43" (1/1) ... [2020-09-24 18:13:43,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b03ff29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:43, skipping insertion in model container [2020-09-24 18:13:43,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:13:43" (1/1) ... [2020-09-24 18:13:43,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:13:43,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:13:43,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:13:43,567 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:13:43,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:13:43,602 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:13:43,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:43 WrapperNode [2020-09-24 18:13:43,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:13:43,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:13:43,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:13:43,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:13:43,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:43" (1/1) ... [2020-09-24 18:13:43,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:43" (1/1) ... [2020-09-24 18:13:43,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:43" (1/1) ... [2020-09-24 18:13:43,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:43" (1/1) ... [2020-09-24 18:13:43,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:43" (1/1) ... [2020-09-24 18:13:43,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:43" (1/1) ... [2020-09-24 18:13:43,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:43" (1/1) ... [2020-09-24 18:13:43,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:13:43,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:13:43,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:13:43,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:13:43,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:43" (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 [2020-09-24 18:13:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:13:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:13:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-24 18:13:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-24 18:13:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:13:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:13:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:13:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-24 18:13:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-24 18:13:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:13:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:13:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:13:44,032 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:13:44,032 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 18:13:44,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:13:44 BoogieIcfgContainer [2020-09-24 18:13:44,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:13:44,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:13:44,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:13:44,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:13:44,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:13:43" (1/3) ... [2020-09-24 18:13:44,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6baaca7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:13:44, skipping insertion in model container [2020-09-24 18:13:44,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:43" (2/3) ... [2020-09-24 18:13:44,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6baaca7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:13:44, skipping insertion in model container [2020-09-24 18:13:44,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:13:44" (3/3) ... [2020-09-24 18:13:44,048 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-1.c [2020-09-24 18:13:44,061 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:13:44,072 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:13:44,121 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:13:44,178 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:13:44,178 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:13:44,178 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:13:44,179 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:13:44,179 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:13:44,179 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:13:44,179 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:13:44,179 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:13:44,204 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-24 18:13:44,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 18:13:44,212 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:44,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:44,213 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:44,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:44,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-24 18:13:44,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:44,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688427070] [2020-09-24 18:13:44,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:44,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:44,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:44,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:13:44,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:44,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 18:13:44,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:44,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:44,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:13:44,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:13:44,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:13:44,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:44,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:44,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:44,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:44,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:44,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:13:44,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:44,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:44,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:44,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:44,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:44,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:44,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:44,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:44,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:44,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:44,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 18:13:44,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:44,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:44,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:44,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:44,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:44,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:13:44,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688427070] [2020-09-24 18:13:44,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:13:44,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:13:44,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323334168] [2020-09-24 18:13:44,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:13:44,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:44,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:13:44,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:13:44,582 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-24 18:13:44,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:44,716 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-24 18:13:44,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:13:44,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 18:13:44,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:44,733 INFO L225 Difference]: With dead ends: 58 [2020-09-24 18:13:44,733 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 18:13:44,743 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 [2020-09-24 18:13:44,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 18:13:44,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 18:13:44,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 18:13:44,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 18:13:44,812 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-24 18:13:44,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:44,813 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 18:13:44,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:13:44,814 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 18:13:44,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 18:13:44,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:44,819 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:44,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:13:44,820 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:44,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:44,821 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-24 18:13:44,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:44,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490578451] [2020-09-24 18:13:44,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:44,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:44,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:44,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 18:13:44,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:44,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 18:13:44,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:44,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:44,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:13:44,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:44,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:44,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:44,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:44,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:44,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:44,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:44,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:13:44,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:44,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:44,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:44,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:44,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:44,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:44,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:45,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:45,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:45,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:45,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 18:13:45,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:45,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:45,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:45,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:13:45,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:45,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:13:45,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490578451] [2020-09-24 18:13:45,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:13:45,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:13:45,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941727579] [2020-09-24 18:13:45,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:13:45,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:45,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:13:45,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:13:45,059 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-24 18:13:45,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:45,133 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-24 18:13:45,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:13:45,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 18:13:45,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:45,136 INFO L225 Difference]: With dead ends: 50 [2020-09-24 18:13:45,136 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 18:13:45,138 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 [2020-09-24 18:13:45,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 18:13:45,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 18:13:45,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 18:13:45,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 18:13:45,148 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-24 18:13:45,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:45,149 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 18:13:45,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:13:45,149 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 18:13:45,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 18:13:45,151 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:45,151 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] [2020-09-24 18:13:45,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:13:45,152 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:45,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:45,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-24 18:13:45,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:45,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669009581] [2020-09-24 18:13:45,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:45,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:45,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:45,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:45,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:45,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 18:13:45,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:13:45,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 671 [2020-09-24 18:13:45,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:45,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:45,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 18:13:45,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:45,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:13:45,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:45,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:45,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:45,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:45,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:45,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:13:45,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:45,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:45,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:45,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:45,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:45,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:45,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:45,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:45,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:45,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 18:13:45,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:45,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 18:13:45,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:45,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:45,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 18:13:45,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:45,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:46,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:46,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:46,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:46,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:46,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:46,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:13:46,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:46,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:46,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:46,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:46,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:46,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 18:13:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:46,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:46,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:46,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:46,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:46,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:13:46,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:46,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:46,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 18:13:46,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:46,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:46,069 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:13:46,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669009581] [2020-09-24 18:13:46,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:13:46,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:13:46,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317451737] [2020-09-24 18:13:46,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:13:46,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:46,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:13:46,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:13:46,078 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 6 states. [2020-09-24 18:13:46,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:46,195 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2020-09-24 18:13:46,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:13:46,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-24 18:13:46,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:46,199 INFO L225 Difference]: With dead ends: 82 [2020-09-24 18:13:46,199 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 18:13:46,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:13:46,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 18:13:46,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-09-24 18:13:46,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 18:13:46,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-09-24 18:13:46,221 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 33 [2020-09-24 18:13:46,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:46,224 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-09-24 18:13:46,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:13:46,224 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-09-24 18:13:46,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 18:13:46,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:46,229 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 18:13:46,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:13:46,229 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:46,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:46,231 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 1 times [2020-09-24 18:13:46,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:46,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105283473] [2020-09-24 18:13:46,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:46,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:46,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:46,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:46,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:13:46,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:13:46,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 506 [2020-09-24 18:13:46,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:46,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:46,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:13:46,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:13:46,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:46,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:46,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:46,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:46,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:46,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:46,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:13:46,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:46,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:46,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:46,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:46,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:46,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:46,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:46,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:47,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:47,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:13:47,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:13:47,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-09-24 18:13:47,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:47,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:47,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:47,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:13:47,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:47,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:47,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:47,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:47,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:47,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:47,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:13:47,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:47,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:13:47,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:47,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:13:47,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:47,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:13:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:47,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:47,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:47,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:47,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:47,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:13:47,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:47,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:47,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:47,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:13:47,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:47,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:13:47,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105283473] [2020-09-24 18:13:47,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:13:47,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:13:47,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432691488] [2020-09-24 18:13:47,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:13:47,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:47,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:13:47,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:13:47,270 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 7 states. [2020-09-24 18:13:47,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:47,389 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-09-24 18:13:47,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:13:47,390 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-24 18:13:47,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:47,392 INFO L225 Difference]: With dead ends: 56 [2020-09-24 18:13:47,393 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 18:13:47,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:13:47,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 18:13:47,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-09-24 18:13:47,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 18:13:47,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-09-24 18:13:47,403 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 34 [2020-09-24 18:13:47,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:47,404 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-09-24 18:13:47,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:13:47,404 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-09-24 18:13:47,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 18:13:47,405 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:47,406 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] [2020-09-24 18:13:47,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:13:47,406 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:47,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:47,407 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-24 18:13:47,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:47,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97896332] [2020-09-24 18:13:47,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:47,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:47,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:47,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:47,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:47,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:47,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 18:13:47,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:13:47,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-09-24 18:13:47,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:47,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:47,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:13:47,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:13:47,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 18:13:47,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:47,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:47,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:47,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:47,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:47,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:13:47,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:47,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:47,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:47,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:47,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:47,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:47,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:48,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:48,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:48,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:13:48,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:13:48,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-24 18:13:48,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:48,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:48,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:13:48,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:13:48,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:48,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:48,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:48,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:48,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:48,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:48,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 18:13:48,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:48,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:48,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:48,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:13:48,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:48,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:13:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:48,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:48,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:48,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:48,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:48,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:13:48,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 18:13:48,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:48,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:48,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:48,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:13:48,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:48,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 18:13:48,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97896332] [2020-09-24 18:13:48,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:13:48,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:13:48,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409103904] [2020-09-24 18:13:48,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:13:48,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:48,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:13:48,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:13:48,245 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 6 states. [2020-09-24 18:13:48,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:48,357 INFO L93 Difference]: Finished difference Result 100 states and 126 transitions. [2020-09-24 18:13:48,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:13:48,357 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-24 18:13:48,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:48,359 INFO L225 Difference]: With dead ends: 100 [2020-09-24 18:13:48,359 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 18:13:48,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:13:48,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 18:13:48,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-09-24 18:13:48,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 18:13:48,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2020-09-24 18:13:48,383 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 35 [2020-09-24 18:13:48,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:48,383 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2020-09-24 18:13:48,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:13:48,383 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2020-09-24 18:13:48,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 18:13:48,391 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:48,391 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] [2020-09-24 18:13:48,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:13:48,391 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:48,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:48,394 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-24 18:13:48,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:48,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253395130] [2020-09-24 18:13:48,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:48,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:48,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:48,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:48,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:48,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:48,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:48,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:53,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:53,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 18:13:53,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:13:53,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:13:53,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:53,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:53,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 18:13:53,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:53,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:53,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:53,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:53,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:53,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:53,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:53,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:13:53,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:53,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:53,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:53,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:53,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:53,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:53,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:53,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:53,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:53,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:54,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:54,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 18:13:54,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:13:54,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1041 [2020-09-24 18:13:54,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:54,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:54,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 18:13:54,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:54,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:54,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:54,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:54,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:54,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 18:13:54,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:54,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 18:13:54,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:54,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:54,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 18:13:54,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:54,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:54,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:54,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:54,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:54,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:54,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:54,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:13:54,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:54,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:54,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:54,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:54,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:54,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 18:13:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:54,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:54,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:54,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:54,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:54,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:13:54,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:54,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:54,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 18:13:54,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:54,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:54,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 18:13:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:54,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:54,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:54,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:54,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:54,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:13:54,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:54,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:54,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 18:13:54,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:54,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:54,588 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 18:13:54,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253395130] [2020-09-24 18:13:54,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:13:54,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:13:54,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823081422] [2020-09-24 18:13:54,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:13:54,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:54,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:13:54,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:13:54,591 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 6 states. [2020-09-24 18:13:54,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:54,665 INFO L93 Difference]: Finished difference Result 100 states and 125 transitions. [2020-09-24 18:13:54,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:13:54,666 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-09-24 18:13:54,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:54,667 INFO L225 Difference]: With dead ends: 100 [2020-09-24 18:13:54,667 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 18:13:54,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:13:54,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 18:13:54,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 18:13:54,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 18:13:54,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-09-24 18:13:54,677 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 51 [2020-09-24 18:13:54,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:54,678 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-09-24 18:13:54,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:13:54,678 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-09-24 18:13:54,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 18:13:54,679 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:54,680 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1] [2020-09-24 18:13:54,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:13:54,680 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:54,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:54,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1703786405, now seen corresponding path program 1 times [2020-09-24 18:13:54,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:54,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042031687] [2020-09-24 18:13:54,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:54,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:54,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:54,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:56,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:56,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 18:13:56,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:13:56,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1761 [2020-09-24 18:13:56,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:56,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:56,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:13:56,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 18:13:56,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:56,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:56,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:56,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:56,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:56,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:56,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:13:56,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:56,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:56,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:56,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:56,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:56,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:56,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:56,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:56,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:58,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:58,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 18:13:58,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:13:58,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1717 [2020-09-24 18:13:58,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:58,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:58,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:58,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:13:58,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:58,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:58,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:58,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:58,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:13:58,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:58,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 18:13:58,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:58,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:13:58,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:58,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:13:58,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:58,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:58,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:58,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:58,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:58,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:58,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:13:58,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:58,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:58,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:58,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:58,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:58,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:13:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:58,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:58,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:58,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:58,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:58,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:13:58,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:58,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:58,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:58,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:58,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:58,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:13:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:58,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:58,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:58,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:58,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:58,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:13:58,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:58,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:58,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:58,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:13:58,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:58,389 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 18:13:58,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042031687] [2020-09-24 18:13:58,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:13:58,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:13:58,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16619688] [2020-09-24 18:13:58,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:13:58,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:58,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:13:58,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:13:58,393 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 7 states. [2020-09-24 18:13:58,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:58,528 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-09-24 18:13:58,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:13:58,530 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-24 18:13:58,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:58,532 INFO L225 Difference]: With dead ends: 66 [2020-09-24 18:13:58,532 INFO L226 Difference]: Without dead ends: 60 [2020-09-24 18:13:58,532 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 [2020-09-24 18:13:58,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-24 18:13:58,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-24 18:13:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 18:13:58,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-09-24 18:13:58,548 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 52 [2020-09-24 18:13:58,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:58,549 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-09-24 18:13:58,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:13:58,549 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-09-24 18:13:58,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 18:13:58,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:58,550 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] [2020-09-24 18:13:58,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:13:58,550 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:58,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:58,552 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-24 18:13:58,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:58,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488112127] [2020-09-24 18:13:58,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:58,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:58,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:58,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:58,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:58,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:58,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:59,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:00,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:03,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:03,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:03,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:03,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 18:14:03,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 18:14:03,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 18:14:03,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:03,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:14:03,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:14:03,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 18:14:03,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:03,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:03,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:03,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:03,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:03,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:03,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:14:03,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:03,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:03,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:03,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:03,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:03,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:14:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:03,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:03,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:03,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:03,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:03,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:04,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:04,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:04,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:04,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:04,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:04,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:05,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:08,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:08,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 18:14:08,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 18:14:08,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:14:08,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:08,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:14:08,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:14:08,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 18:14:08,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:08,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:08,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:08,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:08,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:14:08,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:08,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 18:14:08,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:08,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:14:08,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:08,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:14:08,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:08,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:08,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:08,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:08,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:08,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:08,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:08,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:08,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:08,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:08,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:08,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:08,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:14:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:08,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:08,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:08,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:08,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:08,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:08,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:08,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:08,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:08,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:08,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:08,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:14:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:08,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:08,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:08,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:08,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:14:08,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:14:08,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-09-24 18:14:08,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:08,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:14:08,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:08,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:14:08,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:08,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:08,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:08,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:08,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:08,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:08,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:14:08,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:08,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:14:08,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:08,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:14:08,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:08,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:14:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:08,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:08,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:08,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:08,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:08,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:14:08,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:08,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:14:08,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:08,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:14:08,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:09,019 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-24 18:14:09,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488112127] [2020-09-24 18:14:09,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:14:09,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 18:14:09,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848030502] [2020-09-24 18:14:09,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 18:14:09,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:09,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 18:14:09,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:14:09,023 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 9 states. [2020-09-24 18:14:09,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:09,206 INFO L93 Difference]: Finished difference Result 80 states and 103 transitions. [2020-09-24 18:14:09,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 18:14:09,206 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-24 18:14:09,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:09,208 INFO L225 Difference]: With dead ends: 80 [2020-09-24 18:14:09,208 INFO L226 Difference]: Without dead ends: 74 [2020-09-24 18:14:09,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:14:09,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-24 18:14:09,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2020-09-24 18:14:09,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-24 18:14:09,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 88 transitions. [2020-09-24 18:14:09,220 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 88 transitions. Word has length 69 [2020-09-24 18:14:09,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:09,220 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 88 transitions. [2020-09-24 18:14:09,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 18:14:09,220 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 88 transitions. [2020-09-24 18:14:09,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-24 18:14:09,222 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:09,222 INFO L422 BasicCegarLoop]: trace histogram [5, 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] [2020-09-24 18:14:09,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 18:14:09,222 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:09,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:09,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1208671938, now seen corresponding path program 1 times [2020-09-24 18:14:09,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:09,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835662930] [2020-09-24 18:14:09,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:09,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:09,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:09,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:09,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:09,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:09,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:09,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:10,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:11,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:11,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:11,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:11,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:11,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:14,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:14,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 18:14:14,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-24 18:14:14,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 18:14:14,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:14,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:14:14,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-24 18:14:14,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:14:14,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:14,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:14,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:14,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:14,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:14,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:14,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:14,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:14,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:14,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:14,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:14,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:14,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:14:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:14,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:14,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:14,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:14,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:14,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:15,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:15,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:15,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:15,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:15,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:16,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:19,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:19,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 18:14:19,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 18:14:19,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:14:19,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:19,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:14:19,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 18:14:19,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:14:19,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:19,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:19,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:19,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:19,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:19,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:14:19,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:14:19,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 18:14:19,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:19,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:14:19,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:14:19,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:14:19,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:19,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:19,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:19,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:19,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:19,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:19,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:14:19,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:19,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:14:19,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:19,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:14:19,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:19,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:14:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:19,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:19,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:19,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:19,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:19,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:14:19,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:14:19,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:19,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:14:19,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:14:19,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:14:19,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:19,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-24 18:14:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:19,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:19,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:19,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:19,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:19,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:14:19,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:14:19,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-24 18:14:19,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:19,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:19,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 18:14:19,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:19,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:19,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:19,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:19,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:19,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:19,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:19,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:19,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:19,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:19,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:19,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:19,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:19,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:14:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:19,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:19,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:19,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:19,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:19,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:19,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:19,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:19,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:19,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:19,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:19,620 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-24 18:14:19,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835662930] [2020-09-24 18:14:19,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:14:19,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:14:19,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157688453] [2020-09-24 18:14:19,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:14:19,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:19,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:14:19,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:14:19,623 INFO L87 Difference]: Start difference. First operand 68 states and 88 transitions. Second operand 7 states. [2020-09-24 18:14:19,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:19,780 INFO L93 Difference]: Finished difference Result 145 states and 213 transitions. [2020-09-24 18:14:19,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:14:19,782 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2020-09-24 18:14:19,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:19,784 INFO L225 Difference]: With dead ends: 145 [2020-09-24 18:14:19,786 INFO L226 Difference]: Without dead ends: 82 [2020-09-24 18:14:19,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:14:19,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-24 18:14:19,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2020-09-24 18:14:19,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 18:14:19,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 98 transitions. [2020-09-24 18:14:19,812 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 98 transitions. Word has length 71 [2020-09-24 18:14:19,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:19,813 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 98 transitions. [2020-09-24 18:14:19,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:14:19,813 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 98 transitions. [2020-09-24 18:14:19,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-24 18:14:19,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:19,819 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 18:14:19,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 18:14:19,819 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:19,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:19,820 INFO L82 PathProgramCache]: Analyzing trace with hash 307755032, now seen corresponding path program 1 times [2020-09-24 18:14:19,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:19,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143318226] [2020-09-24 18:14:19,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:19,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:19,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:19,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:19,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:19,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:21,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:21,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:23,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:24,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:24,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:24,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-24 18:14:24,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:14:24,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 18:14:24,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:24,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:14:24,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:14:24,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 18:14:24,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:24,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:24,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:24,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:24,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:24,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:24,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:14:24,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:24,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:24,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:24,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:24,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:24,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:14:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:24,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:24,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:24,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:24,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:25,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:25,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:25,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:25,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:28,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:28,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:28,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:28,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:28,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:28,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:28,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:29,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:29,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 18:14:29,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-24 18:14:29,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 18:14:29,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:29,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:14:29,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:14:29,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-24 18:14:29,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:29,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:29,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:29,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:29,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:31,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:31,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 18:14:31,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:14:31,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1596 [2020-09-24 18:14:31,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:31,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:14:31,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:31,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 18:14:31,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:31,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:31,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:31,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:31,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:31,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:14:31,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:31,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 18:14:31,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:31,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:14:31,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:31,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:14:31,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:31,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:31,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:31,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:31,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:31,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:31,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:31,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:31,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:31,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:31,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:31,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:31,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:14:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:31,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:31,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:31,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:31,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:31,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:31,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:31,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:31,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:31,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:31,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:31,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:14:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:31,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:31,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:31,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:31,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:31,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:14:31,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:31,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:14:31,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:31,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:14:31,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:31,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 18:14:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:31,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:31,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:31,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 18:14:31,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:31,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 18:14:31,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:31,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:14:31,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:31,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:14:31,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:31,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:31,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:31,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:31,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:14:31,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:31,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:14:31,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:31,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:31,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:31,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:31,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:31,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:31,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:31,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:31,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:31,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:31,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:31,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:31,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:31,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:31,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:31,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:31,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:14:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:31,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:31,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:31,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:31,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:31,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:31,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:31,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:31,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:31,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:31,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:31,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:14:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:31,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:31,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:31,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:31,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:31,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:31,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:31,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:31,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:31,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:31,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:31,723 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 26 proven. 42 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-24 18:14:31,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143318226] [2020-09-24 18:14:31,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:14:31,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 18:14:31,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765930581] [2020-09-24 18:14:31,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 18:14:31,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:31,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 18:14:31,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:14:31,725 INFO L87 Difference]: Start difference. First operand 74 states and 98 transitions. Second operand 9 states. [2020-09-24 18:14:31,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:31,915 INFO L93 Difference]: Finished difference Result 120 states and 167 transitions. [2020-09-24 18:14:31,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:14:31,915 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 105 [2020-09-24 18:14:31,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:31,917 INFO L225 Difference]: With dead ends: 120 [2020-09-24 18:14:31,918 INFO L226 Difference]: Without dead ends: 114 [2020-09-24 18:14:31,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:14:31,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-24 18:14:31,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 100. [2020-09-24 18:14:31,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-24 18:14:31,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 137 transitions. [2020-09-24 18:14:31,931 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 137 transitions. Word has length 105 [2020-09-24 18:14:31,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:31,932 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 137 transitions. [2020-09-24 18:14:31,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 18:14:31,932 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 137 transitions. [2020-09-24 18:14:31,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-24 18:14:31,934 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:31,934 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:31,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 18:14:31,935 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:31,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:31,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1630569666, now seen corresponding path program 1 times [2020-09-24 18:14:31,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:31,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617432713] [2020-09-24 18:14:31,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:31,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:31,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:32,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:32,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:32,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:32,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:32,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:32,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:33,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:33,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:33,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:34,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:34,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:34,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking...