/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:47:02,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:47:02,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:47:03,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:47:03,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:47:03,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:47:03,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:47:03,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:47:03,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:47:03,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:47:03,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:47:03,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:47:03,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:47:03,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:47:03,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:47:03,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:47:03,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:47:03,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:47:03,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:47:03,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:47:03,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:47:03,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:47:03,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:47:03,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:47:03,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:47:03,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:47:03,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:47:03,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:47:03,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:47:03,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:47:03,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:47:03,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:47:03,072 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:47:03,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:47:03,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:47:03,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:47:03,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:47:03,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:47:03,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:47:03,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:47:03,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:47:03,080 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 23:47:03,132 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:47:03,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:47:03,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:47:03,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:47:03,135 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:47:03,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:47:03,136 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:47:03,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:47:03,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:47:03,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:47:03,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:47:03,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:47:03,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:47:03,139 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:47:03,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:47:03,139 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:47:03,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:47:03,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:47:03,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:47:03,140 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:47:03,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:47:03,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:47:03,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:47:03,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:47:03,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:47:03,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:47:03,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:47:03,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:47:03,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:47:03,142 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-24 23:47:03,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:47:03,636 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:47:03,641 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:47:03,643 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:47:03,644 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:47:03,645 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2020-09-24 23:47:03,746 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a90502b5c/e90634f8fc9d4ffda28a4df9185e4d9c/FLAG1231ddbf3 [2020-09-24 23:47:04,298 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:47:04,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2020-09-24 23:47:04,307 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a90502b5c/e90634f8fc9d4ffda28a4df9185e4d9c/FLAG1231ddbf3 [2020-09-24 23:47:04,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a90502b5c/e90634f8fc9d4ffda28a4df9185e4d9c [2020-09-24 23:47:04,676 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:47:04,682 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:47:04,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:47:04,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:47:04,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:47:04,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:47:04" (1/1) ... [2020-09-24 23:47:04,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25dd80d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:04, skipping insertion in model container [2020-09-24 23:47:04,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:47:04" (1/1) ... [2020-09-24 23:47:04,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:47:04,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:47:04,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:47:04,955 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:47:04,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:47:04,988 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:47:04,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:04 WrapperNode [2020-09-24 23:47:04,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:47:04,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:47:04,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:47:04,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:47:05,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:04" (1/1) ... [2020-09-24 23:47:05,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:04" (1/1) ... [2020-09-24 23:47:05,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:04" (1/1) ... [2020-09-24 23:47:05,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:04" (1/1) ... [2020-09-24 23:47:05,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:04" (1/1) ... [2020-09-24 23:47:05,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:04" (1/1) ... [2020-09-24 23:47:05,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:04" (1/1) ... [2020-09-24 23:47:05,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:47:05,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:47:05,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:47:05,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:47:05,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:04" (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 23:47:05,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:47:05,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:47:05,196 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-24 23:47:05,196 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-24 23:47:05,196 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:47:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:47:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:47:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-24 23:47:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-24 23:47:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:47:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:47:05,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:47:05,457 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:47:05,457 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 23:47:05,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:47:05 BoogieIcfgContainer [2020-09-24 23:47:05,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:47:05,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:47:05,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:47:05,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:47:05,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:47:04" (1/3) ... [2020-09-24 23:47:05,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d909a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:47:05, skipping insertion in model container [2020-09-24 23:47:05,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:04" (2/3) ... [2020-09-24 23:47:05,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d909a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:47:05, skipping insertion in model container [2020-09-24 23:47:05,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:47:05" (3/3) ... [2020-09-24 23:47:05,476 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2020-09-24 23:47:05,491 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:47:05,504 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:47:05,531 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:47:05,571 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:47:05,571 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:47:05,571 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:47:05,572 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:47:05,572 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:47:05,572 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:47:05,572 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:47:05,572 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:47:05,600 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-24 23:47:05,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 23:47:05,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:47:05,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:47:05,613 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:47:05,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:47:05,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-24 23:47:05,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:47:05,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663578812] [2020-09-24 23:47:05,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:47:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:05,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:05,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:05,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:47:05,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:05,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 23:47:05,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:05,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:47:05,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:47:05,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:47:05,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 23:47:05,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:47:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:05,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:05,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:05,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:47:05,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:05,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:47:05,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:05,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:05,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:05,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:05,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:05,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:47:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:05,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:05,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:05,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:05,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:05,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 23:47:05,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:05,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:47:05,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:47:05,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:47:05,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:05,953 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 23:47:05,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663578812] [2020-09-24 23:47:05,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:47:05,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 23:47:05,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310474490] [2020-09-24 23:47:05,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 23:47:05,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:47:05,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 23:47:05,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:47:05,992 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-24 23:47:06,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:47:06,131 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-24 23:47:06,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 23:47:06,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 23:47:06,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:47:06,148 INFO L225 Difference]: With dead ends: 58 [2020-09-24 23:47:06,149 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 23:47:06,154 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 23:47:06,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 23:47:06,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 23:47:06,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 23:47:06,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 23:47:06,212 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-24 23:47:06,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:47:06,213 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 23:47:06,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 23:47:06,213 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 23:47:06,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 23:47:06,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:47:06,216 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 23:47:06,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:47:06,217 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:47:06,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:47:06,217 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-24 23:47:06,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:47:06,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700011758] [2020-09-24 23:47:06,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:47:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:06,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:06,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:06,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 23:47:06,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:06,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 23:47:06,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:06,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:47:06,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:47:06,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:47:06,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:06,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:47:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:06,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:06,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:06,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:47:06,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:06,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:47:06,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:06,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:06,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:06,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:06,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:06,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:47:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:06,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:06,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:06,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:06,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:06,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-24 23:47:06,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:06,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:47:06,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:47:06,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:47:06,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:06,486 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 23:47:06,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700011758] [2020-09-24 23:47:06,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:47:06,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 23:47:06,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134468520] [2020-09-24 23:47:06,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 23:47:06,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:47:06,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 23:47:06,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:47:06,490 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-24 23:47:06,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:47:06,570 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-24 23:47:06,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 23:47:06,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 23:47:06,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:47:06,572 INFO L225 Difference]: With dead ends: 50 [2020-09-24 23:47:06,573 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 23:47:06,574 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 23:47:06,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 23:47:06,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 23:47:06,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 23:47:06,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 23:47:06,590 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-24 23:47:06,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:47:06,590 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 23:47:06,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 23:47:06,590 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 23:47:06,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 23:47:06,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:47:06,593 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 23:47:06,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:47:06,593 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:47:06,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:47:06,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-24 23:47:06,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:47:06,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23067629] [2020-09-24 23:47:06,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:47:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:06,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:06,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:06,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:07,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:07,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 23:47:07,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:47:07,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-09-24 23:47:07,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:07,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:47:07,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:47:07,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 23:47:07,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 23:47:07,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:47:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:07,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:07,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:07,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:47:07,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:07,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:47:07,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:07,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:07,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:07,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:07,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 23:47:07,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:47:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:07,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:07,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:07,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:07,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:07,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 23:47:07,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:47:07,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-09-24 23:47:07,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:07,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:47:07,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:47:07,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 23:47:07,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:07,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:07,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:07,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:07,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:07,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:07,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:47:07,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:07,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:47:07,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:07,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:47:07,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:07,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:47:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:07,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:07,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:07,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:07,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:07,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:47:07,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:07,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:47:07,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:07,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:47:07,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:07,640 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 23:47:07,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23067629] [2020-09-24 23:47:07,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:47:07,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 23:47:07,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100925785] [2020-09-24 23:47:07,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 23:47:07,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:47:07,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 23:47:07,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:47:07,643 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-24 23:47:07,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:47:07,818 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2020-09-24 23:47:07,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 23:47:07,819 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 23:47:07,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:47:07,822 INFO L225 Difference]: With dead ends: 69 [2020-09-24 23:47:07,822 INFO L226 Difference]: Without dead ends: 63 [2020-09-24 23:47:07,823 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 23:47:07,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-24 23:47:07,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-09-24 23:47:07,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-24 23:47:07,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2020-09-24 23:47:07,840 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 33 [2020-09-24 23:47:07,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:47:07,840 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2020-09-24 23:47:07,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 23:47:07,841 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2020-09-24 23:47:07,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 23:47:07,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:47:07,844 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 23:47:07,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:47:07,844 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:47:07,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:47:07,845 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-24 23:47:07,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:47:07,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936352440] [2020-09-24 23:47:07,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:47:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:07,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:07,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:07,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:08,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:08,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:08,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 23:47:08,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:47:08,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 532 [2020-09-24 23:47:08,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:08,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:47:08,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:47:08,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 23:47:08,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:08,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:47:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:08,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:08,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:08,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:47:08,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:08,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:47:08,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:08,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:08,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:08,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:08,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:08,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:47:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:08,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:08,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:08,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:08,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:08,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:08,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 23:47:08,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:47:08,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-09-24 23:47:08,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:08,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:47:08,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:47:08,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 23:47:08,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:08,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:09,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:09,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:09,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:09,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:09,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 23:47:09,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:09,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:47:09,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:09,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:47:09,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:09,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 23:47:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:09,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:09,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:09,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:09,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:09,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:47:09,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:09,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:47:09,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:09,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:47:09,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:09,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 23:47:09,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936352440] [2020-09-24 23:47:09,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:47:09,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 23:47:09,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245136402] [2020-09-24 23:47:09,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 23:47:09,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:47:09,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 23:47:09,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:47:09,097 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand 7 states. [2020-09-24 23:47:09,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:47:09,267 INFO L93 Difference]: Finished difference Result 85 states and 110 transitions. [2020-09-24 23:47:09,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 23:47:09,268 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-24 23:47:09,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:47:09,270 INFO L225 Difference]: With dead ends: 85 [2020-09-24 23:47:09,271 INFO L226 Difference]: Without dead ends: 79 [2020-09-24 23:47:09,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:47:09,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-24 23:47:09,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67. [2020-09-24 23:47:09,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-24 23:47:09,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2020-09-24 23:47:09,287 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 35 [2020-09-24 23:47:09,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:47:09,287 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2020-09-24 23:47:09,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 23:47:09,288 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2020-09-24 23:47:09,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 23:47:09,291 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:47:09,291 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 23:47:09,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 23:47:09,291 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:47:09,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:47:09,292 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-24 23:47:09,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:47:09,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010970145] [2020-09-24 23:47:09,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:47:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:09,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:09,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:09,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:09,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:09,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:09,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:09,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:14,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:14,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 23:47:14,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 23:47:14,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 23:47:14,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:14,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:47:14,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:47:14,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 23:47:14,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:14,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:47:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:14,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:14,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:14,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:47:14,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:14,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:47:14,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:14,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:14,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:14,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:14,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:14,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:47:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:14,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:14,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:14,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:14,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:14,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:14,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:15,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:17,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:17,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 23:47:17,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 23:47:17,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3157 [2020-09-24 23:47:17,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:17,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:47:17,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:47:17,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 23:47:17,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:17,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:17,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:17,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:17,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:17,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:17,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 23:47:17,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:47:17,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 23:47:17,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:17,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:47:17,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:17,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 23:47:17,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:17,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:17,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:17,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:17,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:17,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:17,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:47:17,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:17,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:47:17,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:17,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:47:17,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:17,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:47:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:17,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:17,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:17,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:17,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:17,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:47:17,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:17,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:47:17,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:17,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:47:17,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:17,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 23:47:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:17,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:17,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:17,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:17,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:17,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 23:47:17,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:17,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:47:17,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:17,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:47:17,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:17,771 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 23:47:17,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010970145] [2020-09-24 23:47:17,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:47:17,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 23:47:17,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000786505] [2020-09-24 23:47:17,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 23:47:17,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:47:17,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 23:47:17,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:47:17,773 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand 11 states. [2020-09-24 23:47:18,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:47:18,117 INFO L93 Difference]: Finished difference Result 175 states and 267 transitions. [2020-09-24 23:47:18,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 23:47:18,118 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2020-09-24 23:47:18,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:47:18,121 INFO L225 Difference]: With dead ends: 175 [2020-09-24 23:47:18,121 INFO L226 Difference]: Without dead ends: 114 [2020-09-24 23:47:18,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-09-24 23:47:18,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-24 23:47:18,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2020-09-24 23:47:18,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-24 23:47:18,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 147 transitions. [2020-09-24 23:47:18,143 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 147 transitions. Word has length 51 [2020-09-24 23:47:18,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:47:18,144 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 147 transitions. [2020-09-24 23:47:18,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 23:47:18,144 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 147 transitions. [2020-09-24 23:47:18,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 23:47:18,150 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:47:18,151 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 23:47:18,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 23:47:18,151 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:47:18,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:47:18,152 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-24 23:47:18,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:47:18,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463399498] [2020-09-24 23:47:18,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:47:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:18,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:18,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:18,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:18,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:18,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:18,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:18,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:19,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:20,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:21,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:23,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:23,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 23:47:23,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 23:47:23,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-24 23:47:23,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:23,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:47:23,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:47:23,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 23:47:23,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:23,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:47:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:23,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:23,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:23,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:47:23,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:23,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:47:23,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:23,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:23,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:23,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:23,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:23,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:47:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:23,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:23,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:23,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:23,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:23,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:23,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:24,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:26,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:26,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:28,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:28,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 23:47:28,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 23:47:28,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 23:47:28,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:28,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:47:28,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 23:47:28,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 23:47:28,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:28,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:28,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:28,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:28,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:28,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:28,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:28,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:47:28,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:47:28,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 500 [2020-09-24 23:47:28,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:28,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:47:28,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:28,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 23:47:28,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:28,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:28,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:28,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:28,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:28,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:28,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:47:28,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:28,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:47:28,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:28,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:47:28,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:28,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 23:47:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:28,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:28,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:28,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:28,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:28,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 23:47:28,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:28,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:47:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:47:28,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:28,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 23:47:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:28,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:28,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:29,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:29,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:29,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:47:29,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:47:29,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-24 23:47:29,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:29,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:47:29,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:47:29,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 23:47:29,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:29,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:29,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:29,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:29,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:29,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:29,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:47:29,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 23:47:29,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:29,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:47:29,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:29,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:47:29,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:29,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 23:47:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:29,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:29,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:29,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:29,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:29,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:47:29,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:29,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:47:29,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:29,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:47:29,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:29,246 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 23:47:29,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463399498] [2020-09-24 23:47:29,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:47:29,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 23:47:29,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116492509] [2020-09-24 23:47:29,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 23:47:29,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:47:29,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 23:47:29,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-09-24 23:47:29,250 INFO L87 Difference]: Start difference. First operand 106 states and 147 transitions. Second operand 16 states. [2020-09-24 23:47:29,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:47:29,629 INFO L93 Difference]: Finished difference Result 199 states and 299 transitions. [2020-09-24 23:47:29,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 23:47:29,630 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 69 [2020-09-24 23:47:29,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:47:29,632 INFO L225 Difference]: With dead ends: 199 [2020-09-24 23:47:29,632 INFO L226 Difference]: Without dead ends: 99 [2020-09-24 23:47:29,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2020-09-24 23:47:29,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-09-24 23:47:29,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 85. [2020-09-24 23:47:29,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 23:47:29,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 114 transitions. [2020-09-24 23:47:29,670 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 114 transitions. Word has length 69 [2020-09-24 23:47:29,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:47:29,670 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 114 transitions. [2020-09-24 23:47:29,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 23:47:29,671 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 114 transitions. [2020-09-24 23:47:29,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-24 23:47:29,680 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:47:29,680 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 23:47:29,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 23:47:29,681 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:47:29,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:47:29,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2103958142, now seen corresponding path program 1 times [2020-09-24 23:47:29,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:47:29,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229749766] [2020-09-24 23:47:29,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:47:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:29,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:29,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:29,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:29,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:29,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:29,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:29,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:30,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:30,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:33,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:34,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:34,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 23:47:34,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 23:47:34,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 23:47:34,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:34,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:47:34,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:47:34,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 23:47:34,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:34,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:47:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:34,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:34,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:34,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:47:34,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:34,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:47:34,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:34,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:34,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:34,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:34,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:34,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:47:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:34,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:34,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:34,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:34,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:34,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:34,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:34,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:35,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:35,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:36,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:39,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:39,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-24 23:47:39,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 23:47:39,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 23:47:39,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:39,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 23:47:39,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 23:47:39,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-24 23:47:39,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:39,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:39,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:39,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:39,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:39,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:40,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:40,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:40,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:40,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:40,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:40,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:42,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:42,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 23:47:42,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 23:47:42,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2585 [2020-09-24 23:47:42,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:42,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:47:42,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:42,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 23:47:42,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:42,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:42,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:42,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:42,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:42,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 23:47:42,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:47:42,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 23:47:42,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:42,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:47:42,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:42,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 23:47:42,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:42,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:42,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:42,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:42,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:42,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:42,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:47:42,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:42,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:42,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:42,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:42,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:42,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:47:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:42,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:42,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:42,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:42,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:42,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:47:42,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:42,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:42,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:42,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:42,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:42,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 23:47:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:42,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:42,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:42,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:42,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:42,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:47:42,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 23:47:42,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:42,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:47:42,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:42,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:47:42,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:42,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 23:47:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:42,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:42,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:42,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:42,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:43,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 23:47:43,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 23:47:43,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1036 [2020-09-24 23:47:43,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:43,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:47:43,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:47:43,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 23:47:43,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:43,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:43,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:43,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 23:47:43,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:47:43,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-24 23:47:43,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:43,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:47:43,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:43,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 23:47:43,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:43,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:43,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:43,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:43,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:43,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:47:43,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:43,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:47:43,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:43,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:47:43,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:43,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:47:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:43,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:43,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:43,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:43,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:47:43,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:43,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:47:43,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:43,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:47:43,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:43,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 23:47:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:43,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:43,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:43,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:43,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:47:43,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:43,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:47:43,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:43,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:47:43,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:43,974 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 55 proven. 35 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-09-24 23:47:43,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229749766] [2020-09-24 23:47:43,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:47:43,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 23:47:43,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563166116] [2020-09-24 23:47:43,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 23:47:43,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:47:43,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 23:47:43,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-09-24 23:47:43,977 INFO L87 Difference]: Start difference. First operand 85 states and 114 transitions. Second operand 18 states. [2020-09-24 23:47:44,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:47:44,504 INFO L93 Difference]: Finished difference Result 156 states and 216 transitions. [2020-09-24 23:47:44,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 23:47:44,506 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 102 [2020-09-24 23:47:44,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:47:44,507 INFO L225 Difference]: With dead ends: 156 [2020-09-24 23:47:44,507 INFO L226 Difference]: Without dead ends: 77 [2020-09-24 23:47:44,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2020-09-24 23:47:44,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-24 23:47:44,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2020-09-24 23:47:44,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-24 23:47:44,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2020-09-24 23:47:44,517 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 102 [2020-09-24 23:47:44,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:47:44,517 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2020-09-24 23:47:44,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 23:47:44,518 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2020-09-24 23:47:44,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-24 23:47:44,519 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:47:44,519 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 23:47:44,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 23:47:44,520 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:47:44,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:47:44,520 INFO L82 PathProgramCache]: Analyzing trace with hash 307755032, now seen corresponding path program 1 times [2020-09-24 23:47:44,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:47:44,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750263861] [2020-09-24 23:47:44,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:47:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:44,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:44,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:44,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:44,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:44,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:45,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:45,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:48,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:49,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:49,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:49,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:49,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:49,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-24 23:47:49,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 23:47:49,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 23:47:49,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:49,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:47:49,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:47:49,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 23:47:49,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:49,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:47:49,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:49,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:49,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:49,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:47:49,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:49,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:47:49,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:49,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:49,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:49,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:49,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:49,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:47:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:49,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:49,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:49,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:49,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:49,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:51,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:51,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:51,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:51,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:53,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:53,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:54,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:54,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 23:47:54,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-09-24 23:47:54,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 23:47:54,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:54,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:47:54,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:47:54,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-24 23:47:54,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:54,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:54,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:54,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:54,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:56,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:56,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 23:47:56,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:47:56,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1544 [2020-09-24 23:47:56,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:56,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:47:56,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:56,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 23:47:56,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:56,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:56,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:56,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:56,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:47:56,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:56,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 23:47:56,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:56,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:47:56,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:56,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 23:47:56,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:56,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:56,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:56,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:56,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:56,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:56,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:47:56,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:56,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:56,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:56,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:56,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:56,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 23:47:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:56,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:56,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:56,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:56,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:56,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:47:56,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:56,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:56,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:56,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:56,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:56,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 23:47:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:56,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:56,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:56,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:56,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:56,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 23:47:56,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:56,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:47:56,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:56,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:47:56,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:56,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 23:47:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:56,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:56,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:56,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 23:47:56,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:56,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 23:47:56,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:56,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:47:56,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:56,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 23:47:56,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:56,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:56,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:56,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:56,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:47:56,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:56,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:47:56,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:56,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:56,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:56,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:56,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:56,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:56,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:56,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:56,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:56,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:56,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:56,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:47:56,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:56,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:56,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:56,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:56,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:56,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 23:47:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:56,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:56,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:56,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:56,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:56,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:47:56,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:56,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:56,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:56,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:56,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:56,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 23:47:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:56,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:56,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:56,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:56,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:56,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:47:56,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:56,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:56,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:56,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:56,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:56,324 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 24 proven. 42 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-09-24 23:47:56,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750263861] [2020-09-24 23:47:56,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:47:56,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 23:47:56,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490059082] [2020-09-24 23:47:56,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:47:56,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:47:56,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:47:56,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:47:56,326 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand 8 states. [2020-09-24 23:47:56,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:47:56,481 INFO L93 Difference]: Finished difference Result 97 states and 119 transitions. [2020-09-24 23:47:56,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 23:47:56,482 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 105 [2020-09-24 23:47:56,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:47:56,484 INFO L225 Difference]: With dead ends: 97 [2020-09-24 23:47:56,484 INFO L226 Difference]: Without dead ends: 91 [2020-09-24 23:47:56,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:47:56,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-24 23:47:56,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 79. [2020-09-24 23:47:56,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-24 23:47:56,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 99 transitions. [2020-09-24 23:47:56,494 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 99 transitions. Word has length 105 [2020-09-24 23:47:56,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:47:56,495 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 99 transitions. [2020-09-24 23:47:56,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 23:47:56,495 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 99 transitions. [2020-09-24 23:47:56,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-24 23:47:56,497 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:47:56,497 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:47:56,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 23:47:56,497 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:47:56,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:47:56,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1039385064, now seen corresponding path program 1 times [2020-09-24 23:47:56,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:47:56,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593231976] [2020-09-24 23:47:56,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:47:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:56,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:56,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:56,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:56,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:58,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:58,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:58,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking...