/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 SequenceOfStatements --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/reducercommutativity/sum20-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:11:44,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:11:44,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:11:44,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:11:44,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:11:44,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:11:44,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:11:44,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:11:44,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:11:44,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:11:44,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:11:44,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:11:44,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:11:44,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:11:44,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:11:44,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:11:44,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:11:44,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:11:44,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:11:44,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:11:44,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:11:44,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:11:44,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:11:44,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:11:44,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:11:44,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:11:44,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:11:44,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:11:44,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:11:44,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:11:44,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:11:44,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:11:44,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:11:44,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:11:44,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:11:44,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:11:44,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:11:44,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:11:44,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:11:44,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:11:44,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:11:44,211 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 [2020-10-13 13:11:44,259 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:11:44,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:11:44,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:11:44,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:11:44,261 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:11:44,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:11:44,262 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:11:44,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:11:44,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:11:44,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:11:44,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:11:44,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:11:44,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:11:44,263 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:11:44,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:11:44,265 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:11:44,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:11:44,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:11:44,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:11:44,267 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:11:44,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:11:44,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:11:44,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:11:44,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:11:44,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:11:44,268 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:11:44,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:11:44,269 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:11:44,269 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:11:44,269 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 -> SequenceOfStatements 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 13:11:44,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:11:44,604 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:11:44,609 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:11:44,612 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:11:44,613 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:11:44,614 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum20-2.i [2020-10-13 13:11:44,689 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/281e58715/cbbffa2aa1f94465abcae18c39520c34/FLAG5464999b7 [2020-10-13 13:11:45,180 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:11:45,181 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sum20-2.i [2020-10-13 13:11:45,186 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/281e58715/cbbffa2aa1f94465abcae18c39520c34/FLAG5464999b7 [2020-10-13 13:11:45,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/281e58715/cbbffa2aa1f94465abcae18c39520c34 [2020-10-13 13:11:45,555 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:11:45,557 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:11:45,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:11:45,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:11:45,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:11:45,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:11:45" (1/1) ... [2020-10-13 13:11:45,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7decd891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:45, skipping insertion in model container [2020-10-13 13:11:45,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:11:45" (1/1) ... [2020-10-13 13:11:45,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:11:45,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:11:45,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:11:45,876 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:11:45,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:11:45,930 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:11:45,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:45 WrapperNode [2020-10-13 13:11:45,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:11:45,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:11:45,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:11:45,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:11:46,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:45" (1/1) ... [2020-10-13 13:11:46,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:45" (1/1) ... [2020-10-13 13:11:46,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:45" (1/1) ... [2020-10-13 13:11:46,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:45" (1/1) ... [2020-10-13 13:11:46,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:45" (1/1) ... [2020-10-13 13:11:46,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:45" (1/1) ... [2020-10-13 13:11:46,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:45" (1/1) ... [2020-10-13 13:11:46,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:11:46,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:11:46,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:11:46,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:11:46,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:45" (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 [2020-10-13 13:11:46,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:11:46,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:11:46,133 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-10-13 13:11:46,133 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:11:46,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:11:46,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 13:11:46,133 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-10-13 13:11:46,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 13:11:46,134 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:11:46,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 13:11:46,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 13:11:46,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 13:11:46,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:11:46,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:11:46,383 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:11:46,383 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 13:11:46,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:11:46 BoogieIcfgContainer [2020-10-13 13:11:46,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:11:46,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:11:46,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:11:46,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:11:46,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:11:45" (1/3) ... [2020-10-13 13:11:46,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1111fd19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:11:46, skipping insertion in model container [2020-10-13 13:11:46,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:45" (2/3) ... [2020-10-13 13:11:46,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1111fd19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:11:46, skipping insertion in model container [2020-10-13 13:11:46,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:11:46" (3/3) ... [2020-10-13 13:11:46,396 INFO L109 eAbstractionObserver]: Analyzing ICFG sum20-2.i [2020-10-13 13:11:46,407 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:11:46,421 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:11:46,441 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:11:46,472 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:11:46,472 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:11:46,472 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:11:46,473 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:11:46,473 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:11:46,473 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:11:46,473 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:11:46,473 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:11:46,498 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-13 13:11:46,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 13:11:46,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:46,508 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:46,509 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:46,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:46,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1461178031, now seen corresponding path program 1 times [2020-10-13 13:11:46,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:46,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154727552] [2020-10-13 13:11:46,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:46,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:46,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:46,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:46,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:47,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:47,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:47,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:47,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 13:11:47,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:11:47,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 979 [2020-10-13 13:11:47,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:47,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:47,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 13:11:47,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:47,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:11:47,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:47,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:47,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:47,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:47,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:47,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:11:47,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:47,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:47,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:47,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 13:11:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:47,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:47,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:47,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:47,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:11:47,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:47,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:11:47,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:47,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:47,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:11:47,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:47,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:47,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 13:11:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:47,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:47,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:47,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:47,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:11:47,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:47,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:11:47,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:47,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:47,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:11:47,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:47,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:47,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 13:11:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:47,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:47,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:47,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:47,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:11:47,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:47,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:11:47,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:47,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:47,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:11:47,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:47,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:47,790 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 13:11:47,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154727552] [2020-10-13 13:11:47,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:47,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-10-13 13:11:47,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605798198] [2020-10-13 13:11:47,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 13:11:47,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:47,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 13:11:47,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 13:11:47,817 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-13 13:11:47,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:47,934 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2020-10-13 13:11:47,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 13:11:47,937 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-13 13:11:47,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:47,949 INFO L225 Difference]: With dead ends: 54 [2020-10-13 13:11:47,950 INFO L226 Difference]: Without dead ends: 26 [2020-10-13 13:11:47,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 13:11:47,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-13 13:11:48,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-13 13:11:48,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-13 13:11:48,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-13 13:11:48,023 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2020-10-13 13:11:48,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:48,024 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-13 13:11:48,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 13:11:48,025 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-13 13:11:48,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 13:11:48,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:48,042 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:48,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:11:48,043 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:48,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:48,044 INFO L82 PathProgramCache]: Analyzing trace with hash -595992629, now seen corresponding path program 1 times [2020-10-13 13:11:48,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:48,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554315909] [2020-10-13 13:11:48,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:48,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:48,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:48,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:48,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:48,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:48,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:49,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:49,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 13:11:49,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:11:49,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1231 [2020-10-13 13:11:49,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:49,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:11:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 13:11:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:11:49,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:49,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:49,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:49,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:49,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:49,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:49,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:49,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:11:49,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:49,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:49,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:49,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:49,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:49,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 13:11:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:49,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:49,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:49,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:49,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:11:49,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:49,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:11:49,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:49,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:49,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:49,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:49,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:49,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 13:11:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:49,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:49,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:49,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:49,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:11:49,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:49,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:11:49,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:49,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:49,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:49,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:49,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:49,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 13:11:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:49,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:49,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:49,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:11:49,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:49,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:11:49,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:49,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:11:49,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:11:49,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:11:49,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:49,384 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 13:11:49,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554315909] [2020-10-13 13:11:49,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:11:49,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:11:49,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746500869] [2020-10-13 13:11:49,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:11:49,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:49,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:11:49,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:11:49,389 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-10-13 13:11:49,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:49,493 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-10-13 13:11:49,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:11:49,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-13 13:11:49,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:49,495 INFO L225 Difference]: With dead ends: 45 [2020-10-13 13:11:49,495 INFO L226 Difference]: Without dead ends: 28 [2020-10-13 13:11:49,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:11:49,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-13 13:11:49,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-13 13:11:49,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 13:11:49,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-13 13:11:49,504 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-13 13:11:49,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:49,505 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-13 13:11:49,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:11:49,505 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-13 13:11:49,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 13:11:49,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:49,507 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:49,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:11:49,507 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:49,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:49,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1309759401, now seen corresponding path program 1 times [2020-10-13 13:11:49,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:49,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571933696] [2020-10-13 13:11:49,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:49,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:49,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:49,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:49,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:49,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:52,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:52,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 13:11:52,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:11:52,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2519 [2020-10-13 13:11:52,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:52,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:11:52,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 13:11:52,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:11:52,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:11:52,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:52,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:52,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:52,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:52,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:52,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:11:52,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:52,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:52,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:52,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:52,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:52,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 13:11:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:52,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:52,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:52,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:52,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:11:52,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:52,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:11:52,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:52,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:52,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:52,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:52,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 13:11:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:52,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:52,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:52,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:52,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:11:52,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:52,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:11:52,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:52,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:52,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:52,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:52,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:52,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 13:11:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:52,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:52,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:52,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:52,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:11:52,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:52,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:11:52,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:52,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:52,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:11:52,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:52,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:52,151 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-13 13:11:52,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571933696] [2020-10-13 13:11:52,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:11:52,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:11:52,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485476222] [2020-10-13 13:11:52,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:11:52,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:52,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:11:52,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:11:52,154 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2020-10-13 13:11:52,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:52,223 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-13 13:11:52,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:11:52,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-13 13:11:52,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:52,225 INFO L225 Difference]: With dead ends: 42 [2020-10-13 13:11:52,225 INFO L226 Difference]: Without dead ends: 29 [2020-10-13 13:11:52,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:11:52,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-13 13:11:52,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-13 13:11:52,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 13:11:52,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-13 13:11:52,233 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 38 [2020-10-13 13:11:52,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:52,235 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-13 13:11:52,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:11:52,235 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-13 13:11:52,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 13:11:52,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:52,237 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:52,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:11:52,238 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:52,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:52,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1209333671, now seen corresponding path program 1 times [2020-10-13 13:11:52,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:52,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12684869] [2020-10-13 13:11:52,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:52,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:52,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:52,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:52,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:52,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:56,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:56,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 13:11:56,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:11:56,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4392 [2020-10-13 13:11:56,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:56,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:11:56,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:11:56,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:11:56,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:56,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:56,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:56,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:56,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:56,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:56,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:11:56,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:56,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:56,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:56,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:56,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:11:56,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 13:11:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:56,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:56,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:56,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:56,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:11:56,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:56,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:11:56,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:56,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:56,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:11:56,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:56,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:56,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 13:11:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:56,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:56,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:56,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:56,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:11:56,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:56,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:11:56,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:56,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:56,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:11:56,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:56,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:56,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 13:11:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:56,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:56,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:56,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:56,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:11:56,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:56,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 13:11:56,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:56,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:56,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:11:56,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:56,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:56,781 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 13:11:56,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12684869] [2020-10-13 13:11:56,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:11:56,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:11:56,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929985282] [2020-10-13 13:11:56,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:11:56,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:56,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:11:56,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:11:56,786 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-13 13:11:56,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:56,871 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-13 13:11:56,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:11:56,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-13 13:11:56,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:56,873 INFO L225 Difference]: With dead ends: 50 [2020-10-13 13:11:56,873 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 13:11:56,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:11:56,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 13:11:56,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-13 13:11:56,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 13:11:56,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-13 13:11:56,886 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 40 [2020-10-13 13:11:56,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:56,886 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-13 13:11:56,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:11:56,887 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-13 13:11:56,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 13:11:56,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:56,890 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:56,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:11:56,890 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:56,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:56,890 INFO L82 PathProgramCache]: Analyzing trace with hash -233991671, now seen corresponding path program 1 times [2020-10-13 13:11:56,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:56,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306691461] [2020-10-13 13:11:56,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:56,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:56,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:56,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:56,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:57,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:01,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:01,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 13:12:01,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:12:01,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:12:01,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:01,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:12:01,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 13:12:01,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 13:12:01,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:01,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:01,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:01,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:01,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:01,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:01,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:12:01,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:01,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:01,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:01,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:01,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:01,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 13:12:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:01,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:01,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:01,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:01,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:12:01,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:01,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:12:01,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:01,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:01,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:01,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 13:12:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:01,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:01,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:01,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:12:01,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:01,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:12:01,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:01,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:12:01,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:12:01,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 13:12:01,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:12:01,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 13:12:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:02,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:02,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:02,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:02,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:12:02,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:02,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 13:12:02,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:02,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:02,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:12:02,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:02,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:02,052 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 13:12:02,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306691461] [2020-10-13 13:12:02,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:02,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 13:12:02,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22817598] [2020-10-13 13:12:02,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:12:02,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:02,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:12:02,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:12:02,055 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-13 13:12:02,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:02,168 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-10-13 13:12:02,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:12:02,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-13 13:12:02,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:02,169 INFO L225 Difference]: With dead ends: 51 [2020-10-13 13:12:02,170 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 13:12:02,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:12:02,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 13:12:02,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-13 13:12:02,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 13:12:02,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-13 13:12:02,184 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 42 [2020-10-13 13:12:02,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:02,184 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-13 13:12:02,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:12:02,184 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-13 13:12:02,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 13:12:02,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:02,185 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:12:02,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:12:02,186 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:02,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:02,186 INFO L82 PathProgramCache]: Analyzing trace with hash -571391385, now seen corresponding path program 2 times [2020-10-13 13:12:02,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:02,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915538822] [2020-10-13 13:12:02,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:02,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:02,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:02,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:02,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:02,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:07,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:07,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 13:12:07,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:12:07,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:12:07,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:07,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:12:07,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:12:07,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 13:12:07,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:07,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:07,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:07,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:07,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:07,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:07,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:12:07,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:07,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:07,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:07,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:07,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:07,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 13:12:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:07,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:07,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:07,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:07,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:12:07,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:07,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 13:12:07,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:07,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:07,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:12:07,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:07,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:07,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 13:12:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:07,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:07,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:07,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:07,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:12:07,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:07,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:12:07,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:07,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:07,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:12:07,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:07,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:07,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 13:12:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:07,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:07,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:07,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:07,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:12:07,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:07,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:12:07,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:07,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:07,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:12:07,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:07,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:07,322 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-13 13:12:07,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915538822] [2020-10-13 13:12:07,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:07,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 13:12:07,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907321171] [2020-10-13 13:12:07,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:12:07,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:07,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:12:07,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:12:07,327 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-10-13 13:12:07,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:07,420 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-10-13 13:12:07,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:12:07,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-13 13:12:07,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:07,422 INFO L225 Difference]: With dead ends: 56 [2020-10-13 13:12:07,422 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 13:12:07,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:12:07,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 13:12:07,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-13 13:12:07,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 13:12:07,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-13 13:12:07,429 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 48 [2020-10-13 13:12:07,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:07,429 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-13 13:12:07,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:12:07,430 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-13 13:12:07,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 13:12:07,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:07,431 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:12:07,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:12:07,431 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:07,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:07,432 INFO L82 PathProgramCache]: Analyzing trace with hash -52274487, now seen corresponding path program 3 times [2020-10-13 13:12:07,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:07,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406077911] [2020-10-13 13:12:07,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:07,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:07,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:07,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:07,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:08,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:12,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:12,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 13:12:12,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:12:12,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:12:12,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:12,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:12:12,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 13:12:12,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 13:12:12,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:12:12,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:12,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:12,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:12,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:12,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:12,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:12:12,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:12,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:12,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:12,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:12,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:12,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 13:12:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:12,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:12,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:12,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:12,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:12:12,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:12,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:12:12,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:12,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:12,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:12,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:12,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:12:12,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 13:12:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:12,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:12,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:12,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:12,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:12:12,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:12,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:12:12,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:12,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:12,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:12,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:12,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:12,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 13:12:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:12,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:12,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:12,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:12,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:12:12,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:12,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:12:12,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:12,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:12,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:12:12,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:12,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:12,577 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 13:12:12,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406077911] [2020-10-13 13:12:12,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:12,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 13:12:12,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198726952] [2020-10-13 13:12:12,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:12:12,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:12,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:12:12,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:12:12,582 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-10-13 13:12:12,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:12,679 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-10-13 13:12:12,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:12:12,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-13 13:12:12,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:12,683 INFO L225 Difference]: With dead ends: 51 [2020-10-13 13:12:12,683 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 13:12:12,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:12:12,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 13:12:12,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-13 13:12:12,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 13:12:12,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-13 13:12:12,692 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 50 [2020-10-13 13:12:12,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:12,692 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-13 13:12:12,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:12:12,692 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-13 13:12:12,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 13:12:12,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:12,693 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:12:12,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:12:12,695 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:12,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:12,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1717617977, now seen corresponding path program 4 times [2020-10-13 13:12:12,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:12,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769622607] [2020-10-13 13:12:12,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:12,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:12,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:12,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:12,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:13,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:17,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:17,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 13:12:17,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:12:17,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 13:12:17,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:17,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:12:17,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 13:12:17,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:12:17,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:17,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:17,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:17,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:17,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:17,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:17,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:12:17,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:17,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:17,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:17,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:17,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:17,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 13:12:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:17,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:17,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:17,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:17,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:12:17,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:17,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:12:17,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:17,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:17,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:17,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:17,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:17,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 13:12:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:17,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:17,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:17,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:12:17,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:17,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:12:17,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:17,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:12:17,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:12:17,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:12:17,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:17,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 13:12:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:17,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:17,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:17,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:17,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:12:17,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:17,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:12:17,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:17,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:17,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:12:17,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:17,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:17,822 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-13 13:12:17,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769622607] [2020-10-13 13:12:17,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:17,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 13:12:17,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416258557] [2020-10-13 13:12:17,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:12:17,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:17,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:12:17,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:12:17,824 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-13 13:12:17,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:17,928 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-10-13 13:12:17,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:12:17,929 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-13 13:12:17,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:17,929 INFO L225 Difference]: With dead ends: 61 [2020-10-13 13:12:17,930 INFO L226 Difference]: Without dead ends: 38 [2020-10-13 13:12:17,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:12:17,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-13 13:12:17,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-13 13:12:17,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-13 13:12:17,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-13 13:12:17,936 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 52 [2020-10-13 13:12:17,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:17,937 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-13 13:12:17,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:12:17,937 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-13 13:12:17,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 13:12:17,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:17,938 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:12:17,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:12:17,938 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:17,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:17,939 INFO L82 PathProgramCache]: Analyzing trace with hash -310901851, now seen corresponding path program 5 times [2020-10-13 13:12:17,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:17,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452817284] [2020-10-13 13:12:17,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:17,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:17,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:17,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:17,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:21,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:22,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:22,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 13:12:22,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:12:22,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:12:22,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:22,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:12:22,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 13:12:22,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:12:22,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:22,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:23,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:23,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:23,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:23,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:23,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:12:23,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:23,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:23,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:23,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:23,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:23,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 13:12:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:23,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:23,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:23,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:23,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:12:23,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:23,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:12:23,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:23,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:23,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:23,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:23,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:23,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 13:12:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:23,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:23,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:23,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:23,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:12:23,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:23,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:12:23,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:23,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:23,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:23,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:23,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:23,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 13:12:23,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:23,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:23,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:23,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:23,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:12:23,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:23,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:12:23,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:23,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:23,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:12:23,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:23,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:23,082 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-13 13:12:23,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452817284] [2020-10-13 13:12:23,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:23,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 13:12:23,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046813169] [2020-10-13 13:12:23,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:12:23,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:23,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:12:23,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:12:23,085 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-10-13 13:12:23,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:23,163 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-10-13 13:12:23,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:12:23,164 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-13 13:12:23,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:23,165 INFO L225 Difference]: With dead ends: 57 [2020-10-13 13:12:23,165 INFO L226 Difference]: Without dead ends: 40 [2020-10-13 13:12:23,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:12:23,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-13 13:12:23,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-13 13:12:23,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 13:12:23,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-13 13:12:23,171 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 58 [2020-10-13 13:12:23,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:23,171 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-13 13:12:23,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:12:23,172 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-13 13:12:23,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 13:12:23,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:23,173 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:12:23,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:12:23,173 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:23,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:23,174 INFO L82 PathProgramCache]: Analyzing trace with hash -921066333, now seen corresponding path program 6 times [2020-10-13 13:12:23,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:23,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37119080] [2020-10-13 13:12:23,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:23,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:23,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:23,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:23,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:28,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:28,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 13:12:28,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:12:28,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:12:28,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:28,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:12:28,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:12:28,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:12:28,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:28,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:28,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:28,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:28,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:28,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:28,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:12:28,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:28,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:28,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:28,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:28,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:12:28,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 13:12:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:28,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:28,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:28,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:28,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:12:28,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:28,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:12:28,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:28,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:28,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:12:28,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:28,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:28,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 13:12:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:28,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:28,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:28,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:28,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:12:28,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:28,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:12:28,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:28,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:28,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:12:28,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:28,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:28,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 13:12:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:28,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:28,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:28,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:28,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:12:28,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:28,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 13:12:28,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:28,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:28,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:12:28,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:28,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:28,310 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-13 13:12:28,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37119080] [2020-10-13 13:12:28,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:28,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 13:12:28,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948417772] [2020-10-13 13:12:28,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:12:28,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:28,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:12:28,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:12:28,313 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 6 states. [2020-10-13 13:12:28,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:28,397 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2020-10-13 13:12:28,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:12:28,397 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-10-13 13:12:28,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:28,398 INFO L225 Difference]: With dead ends: 70 [2020-10-13 13:12:28,398 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 13:12:28,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:12:28,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 13:12:28,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-13 13:12:28,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 13:12:28,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-13 13:12:28,404 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 60 [2020-10-13 13:12:28,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:28,404 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-13 13:12:28,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:12:28,404 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-13 13:12:28,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 13:12:28,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:28,406 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:12:28,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:12:28,406 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:28,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:28,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1655752187, now seen corresponding path program 7 times [2020-10-13 13:12:28,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:28,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124741572] [2020-10-13 13:12:28,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:28,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:28,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:28,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:28,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:33,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:33,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 13:12:33,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:12:33,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:12:33,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:33,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:12:33,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 13:12:33,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:12:33,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:33,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:33,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:33,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:33,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:33,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:33,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:12:33,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:33,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:33,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:33,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:33,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:33,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 13:12:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:33,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:33,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:33,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:33,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:12:33,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:33,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:12:33,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:33,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:33,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 13:12:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:33,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:33,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:33,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:33,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:12:33,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:33,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:12:33,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:33,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:33,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:33,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:33,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:33,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 13:12:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:33,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:33,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:33,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:33,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:12:33,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:33,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:12:33,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:33,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:33,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:12:33,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:33,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:33,542 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-13 13:12:33,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124741572] [2020-10-13 13:12:33,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:33,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 13:12:33,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002936912] [2020-10-13 13:12:33,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:12:33,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:33,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:12:33,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:12:33,544 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-13 13:12:33,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:33,672 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-10-13 13:12:33,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:12:33,672 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-10-13 13:12:33,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:33,673 INFO L225 Difference]: With dead ends: 61 [2020-10-13 13:12:33,673 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 13:12:33,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:12:33,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 13:12:33,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-13 13:12:33,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 13:12:33,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-13 13:12:33,685 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 62 [2020-10-13 13:12:33,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:33,686 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-13 13:12:33,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:12:33,686 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-13 13:12:33,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 13:12:33,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:33,691 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:12:33,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:12:33,692 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:33,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:33,692 INFO L82 PathProgramCache]: Analyzing trace with hash -537083133, now seen corresponding path program 8 times [2020-10-13 13:12:33,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:33,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688125611] [2020-10-13 13:12:33,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:33,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:33,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:33,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:33,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:38,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:38,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 13:12:38,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:12:38,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 13:12:38,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:38,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:12:38,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:12:38,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:12:38,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:38,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:38,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:38,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:38,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:38,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:38,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:12:38,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:38,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:38,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:38,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:38,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:38,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 13:12:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:38,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:38,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:38,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:38,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:12:38,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:38,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:12:38,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:38,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:38,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:12:38,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:38,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:38,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 13:12:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:38,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:38,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:38,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:38,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:12:38,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:38,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:12:38,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:38,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:38,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:12:38,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:38,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:38,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 13:12:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:38,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:38,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:38,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:38,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:12:38,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:38,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:12:38,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:38,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:38,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:12:38,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:38,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:38,838 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-13 13:12:38,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688125611] [2020-10-13 13:12:38,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:38,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 13:12:38,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427286871] [2020-10-13 13:12:38,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:12:38,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:38,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:12:38,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:12:38,840 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 7 states. [2020-10-13 13:12:38,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:38,933 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2020-10-13 13:12:38,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:12:38,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-13 13:12:38,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:38,935 INFO L225 Difference]: With dead ends: 76 [2020-10-13 13:12:38,935 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 13:12:38,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:12:38,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 13:12:38,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-13 13:12:38,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 13:12:38,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-13 13:12:38,941 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 64 [2020-10-13 13:12:38,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:38,941 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-13 13:12:38,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:12:38,942 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-13 13:12:38,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 13:12:38,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:38,943 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:12:38,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:12:38,943 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:38,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:38,944 INFO L82 PathProgramCache]: Analyzing trace with hash -893069467, now seen corresponding path program 9 times [2020-10-13 13:12:38,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:38,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089439126] [2020-10-13 13:12:38,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:38,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:38,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:38,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:39,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:43,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:43,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 13:12:43,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:12:43,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:12:43,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:43,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:12:43,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 13:12:43,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:12:43,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:43,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:43,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:43,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:43,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:43,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:43,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:12:43,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:43,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:43,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:43,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:43,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:43,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 13:12:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:43,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:43,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:43,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:12:43,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:43,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:12:43,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:43,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:12:43,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:12:43,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:12:43,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:44,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 13:12:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:44,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:44,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:44,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:44,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:12:44,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:44,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:12:44,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:44,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:44,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:12:44,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:44,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:44,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:12:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:44,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:44,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:44,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:44,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:12:44,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:44,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:12:44,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:44,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:44,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:12:44,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:44,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:44,055 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-13 13:12:44,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089439126] [2020-10-13 13:12:44,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:44,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 13:12:44,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327481842] [2020-10-13 13:12:44,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:12:44,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:44,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:12:44,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:12:44,057 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 7 states. [2020-10-13 13:12:44,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:44,198 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2020-10-13 13:12:44,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:12:44,199 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-10-13 13:12:44,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:44,200 INFO L225 Difference]: With dead ends: 77 [2020-10-13 13:12:44,201 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 13:12:44,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:12:44,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 13:12:44,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-13 13:12:44,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 13:12:44,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-13 13:12:44,208 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 66 [2020-10-13 13:12:44,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:44,208 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-13 13:12:44,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:12:44,209 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-13 13:12:44,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 13:12:44,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:44,210 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:12:44,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:12:44,210 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:44,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:44,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1541017661, now seen corresponding path program 10 times [2020-10-13 13:12:44,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:44,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788008346] [2020-10-13 13:12:44,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:44,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:44,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:44,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:44,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:49,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:49,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 13:12:49,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:12:49,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:12:49,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:49,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:12:49,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 13:12:49,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:12:49,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:49,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:49,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:49,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:49,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:49,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:49,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:12:49,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:49,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:49,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:49,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:49,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:49,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 13:12:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:49,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:49,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:49,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:12:49,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:49,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:12:49,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:49,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:12:49,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:12:49,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:12:49,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:49,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 13:12:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:49,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:49,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:49,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:49,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:12:49,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:49,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:12:49,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:12:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:49,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:49,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 13:12:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:49,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:49,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:49,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:49,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:12:49,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:49,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:12:49,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:49,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:49,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:12:49,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:49,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:49,351 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-13 13:12:49,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788008346] [2020-10-13 13:12:49,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:49,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 13:12:49,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945271517] [2020-10-13 13:12:49,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:12:49,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:49,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:12:49,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:12:49,353 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 8 states. [2020-10-13 13:12:49,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:49,521 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2020-10-13 13:12:49,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:12:49,522 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2020-10-13 13:12:49,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:49,522 INFO L225 Difference]: With dead ends: 81 [2020-10-13 13:12:49,523 INFO L226 Difference]: Without dead ends: 50 [2020-10-13 13:12:49,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:12:49,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-13 13:12:49,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-13 13:12:49,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-13 13:12:49,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-13 13:12:49,529 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 72 [2020-10-13 13:12:49,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:49,529 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-13 13:12:49,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:12:49,529 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-13 13:12:49,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 13:12:49,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:49,530 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:12:49,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 13:12:49,531 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:49,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:49,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1836873311, now seen corresponding path program 11 times [2020-10-13 13:12:49,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:49,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962278697] [2020-10-13 13:12:49,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:49,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:49,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:49,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:49,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:54,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:54,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 13:12:54,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:12:54,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:12:54,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:54,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:12:54,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-13 13:12:54,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:12:54,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:54,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:54,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:54,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:54,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:54,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:54,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:12:54,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:54,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:54,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:54,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:54,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:54,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 13:12:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:54,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:54,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:54,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:54,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 13:12:54,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:54,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 13:12:54,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:54,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:54,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:54,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:54,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:54,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:12:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:54,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:54,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:54,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:54,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 13:12:54,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:54,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:12:54,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:54,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:54,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 13:12:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:54,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:54,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:54,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:54,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 13:12:54,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:54,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:12:54,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:54,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:54,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:12:54,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:54,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2020-10-13 13:12:54,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962278697] [2020-10-13 13:12:54,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:54,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 13:12:54,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714013169] [2020-10-13 13:12:54,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:12:54,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:54,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:12:54,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:12:54,686 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 8 states. [2020-10-13 13:12:54,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:54,789 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2020-10-13 13:12:54,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:12:54,789 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-10-13 13:12:54,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:54,790 INFO L225 Difference]: With dead ends: 73 [2020-10-13 13:12:54,790 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 13:12:54,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:12:54,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 13:12:54,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-13 13:12:54,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-13 13:12:54,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-13 13:12:54,797 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 78 [2020-10-13 13:12:54,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:54,797 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-13 13:12:54,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:12:54,797 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-13 13:12:54,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 13:12:54,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:54,798 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:12:54,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 13:12:54,799 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:54,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:54,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1726786463, now seen corresponding path program 12 times [2020-10-13 13:12:54,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:54,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136149907] [2020-10-13 13:12:54,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:54,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:54,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:54,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:54,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:59,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:59,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 13:12:59,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:12:59,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 13:12:59,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:59,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:12:59,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:12:59,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:12:59,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:59,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:59,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:59,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:59,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:59,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:59,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:12:59,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:59,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:59,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:59,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:59,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:59,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 13:12:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:59,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:59,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:59,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:59,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 13:12:59,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:59,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:12:59,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:59,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:59,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:12:59,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:59,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:59,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:12:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:59,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:59,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:59,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:59,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 13:12:59,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:59,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 13:12:59,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:59,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:59,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:12:59,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:59,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:12:59,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:12:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:59,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:59,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:59,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:59,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 13:12:59,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:59,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 13:12:59,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:59,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:12:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:59,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:12:59,986 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-13 13:12:59,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136149907] [2020-10-13 13:12:59,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:59,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 13:12:59,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479159277] [2020-10-13 13:12:59,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:12:59,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:59,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:12:59,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:12:59,988 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 8 states. [2020-10-13 13:13:00,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:13:00,106 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2020-10-13 13:13:00,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:13:00,107 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-10-13 13:13:00,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:13:00,108 INFO L225 Difference]: With dead ends: 90 [2020-10-13 13:13:00,108 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 13:13:00,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:13:00,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 13:13:00,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-13 13:13:00,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 13:13:00,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-13 13:13:00,114 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 80 [2020-10-13 13:13:00,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:13:00,115 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-13 13:13:00,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:13:00,115 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-13 13:13:00,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 13:13:00,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:13:00,116 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:13:00,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 13:13:00,116 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:13:00,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:13:00,117 INFO L82 PathProgramCache]: Analyzing trace with hash -401359871, now seen corresponding path program 13 times [2020-10-13 13:13:00,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:13:00,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698911176] [2020-10-13 13:13:00,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:13:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:00,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:00,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:00,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:00,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:05,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:05,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 13:13:05,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:13:05,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:13:05,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:05,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:13:05,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 13:13:05,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:13:05,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:05,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:13:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:05,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:05,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:05,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:13:05,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:13:05,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:13:05,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:05,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:05,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:05,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:05,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:05,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 13:13:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:05,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:05,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:05,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 13:13:05,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:13:05,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 13:13:05,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:05,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:13:05,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:13:05,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:13:05,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:05,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 13:13:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:05,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:05,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:05,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:05,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 13:13:05,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:05,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 13:13:05,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:05,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:05,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:13:05,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:05,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:05,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:13:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:05,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:05,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:05,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:05,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 13:13:05,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:05,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 13:13:05,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:05,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:05,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:13:05,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:05,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:13:05,345 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-10-13 13:13:05,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698911176] [2020-10-13 13:13:05,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:13:05,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 13:13:05,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826439559] [2020-10-13 13:13:05,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:13:05,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:13:05,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:13:05,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:13:05,348 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 9 states. [2020-10-13 13:13:05,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:13:05,543 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2020-10-13 13:13:05,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 13:13:05,544 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-13 13:13:05,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:13:05,545 INFO L225 Difference]: With dead ends: 91 [2020-10-13 13:13:05,545 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 13:13:05,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:13:05,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 13:13:05,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-13 13:13:05,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 13:13:05,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-13 13:13:05,560 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 82 [2020-10-13 13:13:05,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:13:05,563 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-13 13:13:05,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:13:05,563 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-13 13:13:05,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 13:13:05,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:13:05,565 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:13:05,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 13:13:05,565 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:13:05,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:13:05,566 INFO L82 PathProgramCache]: Analyzing trace with hash -53408161, now seen corresponding path program 14 times [2020-10-13 13:13:05,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:13:05,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974706646] [2020-10-13 13:13:05,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:13:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:05,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:05,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:05,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:05,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:10,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:10,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 13:13:10,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:13:10,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:13:10,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:13:10,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:13:10,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:13:10,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:10,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:13:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:10,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:10,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:10,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:13:10,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:13:10,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:13:10,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:10,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:10,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:10,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:10,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:10,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 13:13:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:10,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:10,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:10,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:10,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:13:10,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:10,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:13:10,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:10,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:10,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:13:10,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:10,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:10,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 13:13:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:10,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:10,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:10,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:10,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:13:10,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:10,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:13:10,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:10,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:10,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:13:10,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:10,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:10,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 13:13:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:10,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:10,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:10,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:10,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:13:10,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:10,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:13:10,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:10,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:10,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:13:10,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:10,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:10,743 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2020-10-13 13:13:10,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974706646] [2020-10-13 13:13:10,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:13:10,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 13:13:10,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393856061] [2020-10-13 13:13:10,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:13:10,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:13:10,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:13:10,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:13:10,745 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 9 states. [2020-10-13 13:13:10,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:13:10,864 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2020-10-13 13:13:10,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 13:13:10,865 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-13 13:13:10,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:13:10,866 INFO L225 Difference]: With dead ends: 96 [2020-10-13 13:13:10,866 INFO L226 Difference]: Without dead ends: 58 [2020-10-13 13:13:10,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:13:10,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-13 13:13:10,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-13 13:13:10,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 13:13:10,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-13 13:13:10,878 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 88 [2020-10-13 13:13:10,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:13:10,878 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-13 13:13:10,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:13:10,878 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-13 13:13:10,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 13:13:10,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:13:10,882 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:13:10,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 13:13:10,882 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:13:10,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:13:10,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1880792257, now seen corresponding path program 15 times [2020-10-13 13:13:10,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:13:10,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359530004] [2020-10-13 13:13:10,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:13:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:10,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:10,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:10,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:10,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:15,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:15,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 13:13:15,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:13:15,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:13:15,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:15,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:13:15,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-13 13:13:15,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:13:15,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:15,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:13:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:15,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:15,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:15,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:13:15,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:13:15,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:13:15,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:15,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:15,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:15,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:15,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:15,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 13:13:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:15,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:15,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:15,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:15,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:13:15,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:15,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 13:13:15,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:15,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:15,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:15,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:15,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:15,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 13:13:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:16,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:16,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:16,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:16,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:13:16,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:16,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 13:13:16,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:16,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:16,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:16,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:16,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:16,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 13:13:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:16,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:16,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:16,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:16,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:13:16,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:16,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 13:13:16,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:16,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:16,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:13:16,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:16,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:16,076 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2020-10-13 13:13:16,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359530004] [2020-10-13 13:13:16,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:13:16,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 13:13:16,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959408132] [2020-10-13 13:13:16,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:13:16,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:13:16,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:13:16,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:13:16,078 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 9 states. [2020-10-13 13:13:16,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:13:16,202 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2020-10-13 13:13:16,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 13:13:16,203 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-10-13 13:13:16,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:13:16,204 INFO L225 Difference]: With dead ends: 83 [2020-10-13 13:13:16,204 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 13:13:16,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:13:16,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 13:13:16,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-13 13:13:16,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 13:13:16,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-13 13:13:16,213 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 90 [2020-10-13 13:13:16,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:13:16,214 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-13 13:13:16,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:13:16,214 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-13 13:13:16,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 13:13:16,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:13:16,216 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:13:16,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 13:13:16,216 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:13:16,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:13:16,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1810955967, now seen corresponding path program 16 times [2020-10-13 13:13:16,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:13:16,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142418968] [2020-10-13 13:13:16,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:13:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:16,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:16,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:16,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:16,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:21,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:21,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 13:13:21,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:13:21,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:13:21,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:21,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:13:21,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:13:21,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:13:21,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:21,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:13:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:21,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:21,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:21,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:13:21,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:13:21,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:13:21,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:21,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:21,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:21,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:21,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:21,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 13:13:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:21,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:21,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:21,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:21,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:13:21,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:21,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:13:21,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:21,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:21,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:13:21,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:21,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:21,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 13:13:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:21,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:21,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:21,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:21,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:13:21,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:21,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:13:21,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:21,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:21,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:13:21,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:21,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:21,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:13:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:21,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:21,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:21,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:21,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:13:21,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:21,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:13:21,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:21,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:21,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:13:21,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:21,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:21,388 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2020-10-13 13:13:21,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142418968] [2020-10-13 13:13:21,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:13:21,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 13:13:21,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275625844] [2020-10-13 13:13:21,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:13:21,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:13:21,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:13:21,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:13:21,390 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 10 states. [2020-10-13 13:13:21,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:13:21,509 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2020-10-13 13:13:21,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 13:13:21,511 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-10-13 13:13:21,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:13:21,512 INFO L225 Difference]: With dead ends: 102 [2020-10-13 13:13:21,512 INFO L226 Difference]: Without dead ends: 62 [2020-10-13 13:13:21,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:13:21,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-13 13:13:21,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-13 13:13:21,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-13 13:13:21,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-13 13:13:21,519 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 92 [2020-10-13 13:13:21,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:13:21,519 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-13 13:13:21,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:13:21,520 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-13 13:13:21,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 13:13:21,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:13:21,522 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 7, 7, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:13:21,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 13:13:21,522 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:13:21,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:13:21,522 INFO L82 PathProgramCache]: Analyzing trace with hash -383218655, now seen corresponding path program 17 times [2020-10-13 13:13:21,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:13:21,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312147567] [2020-10-13 13:13:21,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:13:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:21,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:21,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:21,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:21,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:26,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:26,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 13:13:26,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:13:26,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 13:13:26,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:26,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:13:26,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-13 13:13:26,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:13:26,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:26,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:13:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:26,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:26,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:26,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:13:26,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:13:26,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:13:26,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:26,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:26,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:26,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:26,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:26,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 13:13:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:26,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:26,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:26,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:26,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:13:26,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:26,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 13:13:26,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:26,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:26,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:26,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:26,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:26,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 13:13:26,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:26,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:26,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:26,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:26,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:13:26,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:26,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 13:13:26,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:26,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:26,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:26,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:26,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:26,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 13:13:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:26,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:26,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:26,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:26,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:13:26,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:26,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 13:13:26,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:26,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:26,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:13:26,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:26,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:26,754 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2020-10-13 13:13:26,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312147567] [2020-10-13 13:13:26,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:13:26,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 13:13:26,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393523894] [2020-10-13 13:13:26,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:13:26,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:13:26,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:13:26,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:13:26,756 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 10 states. [2020-10-13 13:13:26,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:13:26,847 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2020-10-13 13:13:26,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 13:13:26,848 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-13 13:13:26,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:13:26,848 INFO L225 Difference]: With dead ends: 87 [2020-10-13 13:13:26,849 INFO L226 Difference]: Without dead ends: 64 [2020-10-13 13:13:26,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:13:26,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-13 13:13:26,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-13 13:13:26,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-13 13:13:26,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-13 13:13:26,854 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 94 [2020-10-13 13:13:26,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:13:26,854 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-13 13:13:26,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:13:26,854 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-13 13:13:26,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 13:13:26,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:13:26,855 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 7, 7, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:13:26,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 13:13:26,856 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:13:26,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:13:26,856 INFO L82 PathProgramCache]: Analyzing trace with hash -650078689, now seen corresponding path program 18 times [2020-10-13 13:13:26,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:13:26,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128397875] [2020-10-13 13:13:26,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:13:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:26,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:26,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:26,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:26,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:31,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:31,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 13:13:31,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:13:31,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 13:13:31,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:31,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:13:31,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-13 13:13:31,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:13:31,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:31,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:13:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:31,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:31,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:31,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:13:31,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:13:31,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:13:31,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:31,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:31,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:31,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:31,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:31,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 13:13:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:31,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:31,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:31,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:31,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:13:31,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:31,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 13:13:31,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:31,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:31,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:31,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:31,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:31,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 13:13:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:31,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:31,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:31,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:13:31,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:13:31,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:13:31,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:31,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:13:31,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:13:31,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:13:31,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:32,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 13:13:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:32,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:32,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:32,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:32,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:13:32,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:32,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 13:13:32,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:32,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:32,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:13:32,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:32,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:32,049 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 88 proven. 124 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2020-10-13 13:13:32,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128397875] [2020-10-13 13:13:32,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:13:32,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 13:13:32,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170790070] [2020-10-13 13:13:32,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:13:32,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:13:32,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:13:32,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:13:32,051 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 10 states. [2020-10-13 13:13:32,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:13:32,235 INFO L93 Difference]: Finished difference Result 107 states and 117 transitions. [2020-10-13 13:13:32,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 13:13:32,237 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 96 [2020-10-13 13:13:32,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:13:32,238 INFO L225 Difference]: With dead ends: 107 [2020-10-13 13:13:32,238 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 13:13:32,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:13:32,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 13:13:32,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-13 13:13:32,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 13:13:32,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-13 13:13:32,247 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 96 [2020-10-13 13:13:32,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:13:32,247 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-13 13:13:32,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:13:32,247 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-13 13:13:32,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 13:13:32,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:13:32,250 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:13:32,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 13:13:32,251 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:13:32,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:13:32,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1317136387, now seen corresponding path program 19 times [2020-10-13 13:13:32,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:13:32,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870160028] [2020-10-13 13:13:32,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:13:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:32,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:32,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:32,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:32,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:37,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:37,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 13:13:37,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:13:37,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:13:37,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:37,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:13:37,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-13 13:13:37,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:13:37,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:37,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:13:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:37,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:37,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:37,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:13:37,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:13:37,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 13:13:37,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:37,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:37,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:37,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:37,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 13:13:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:37,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:37,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:37,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:37,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:13:37,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:37,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 13:13:37,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:37,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:37,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:37,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:37,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:37,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 13:13:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:37,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:37,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:37,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:37,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:13:37,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:37,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 13:13:37,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:37,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:37,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:37,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:37,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:37,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:13:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:37,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:37,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:37,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:37,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:13:37,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:37,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 13:13:37,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:37,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:37,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 13:13:37,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:37,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:37,492 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2020-10-13 13:13:37,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870160028] [2020-10-13 13:13:37,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:13:37,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 13:13:37,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239758264] [2020-10-13 13:13:37,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:13:37,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:13:37,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:13:37,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:13:37,494 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 11 states. [2020-10-13 13:13:37,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:13:37,625 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2020-10-13 13:13:37,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 13:13:37,626 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-10-13 13:13:37,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:13:37,627 INFO L225 Difference]: With dead ends: 93 [2020-10-13 13:13:37,628 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 13:13:37,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:13:37,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 13:13:37,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-13 13:13:37,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 13:13:37,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-13 13:13:37,634 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 102 [2020-10-13 13:13:37,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:13:37,634 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-13 13:13:37,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:13:37,634 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-13 13:13:37,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 13:13:37,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:13:37,636 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 8, 8, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:13:37,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 13:13:37,636 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:13:37,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:13:37,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1879450363, now seen corresponding path program 20 times [2020-10-13 13:13:37,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:13:37,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930423761] [2020-10-13 13:13:37,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:13:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:37,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:37,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:37,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:37,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:42,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:42,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 13:13:42,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:13:42,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:13:42,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:42,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:13:42,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:13:42,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:13:42,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:42,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:13:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:42,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:42,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:42,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:13:42,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:13:42,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:13:42,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:42,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:42,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:42,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:42,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:42,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 13:13:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:42,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:42,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:42,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:42,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:13:42,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:42,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 13:13:42,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:42,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:42,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 13:13:42,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:42,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:42,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 13:13:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:42,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:42,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:42,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:42,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:13:42,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:42,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 13:13:42,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:42,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:42,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 13:13:42,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:42,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:42,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:13:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:42,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:42,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:42,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:42,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:13:42,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:42,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 13:13:42,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:42,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 13:13:42,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:42,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:42,863 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2020-10-13 13:13:42,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930423761] [2020-10-13 13:13:42,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:13:42,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 13:13:42,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17679048] [2020-10-13 13:13:42,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:13:42,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:13:42,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:13:42,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:13:42,865 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 11 states. [2020-10-13 13:13:42,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:13:42,991 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2020-10-13 13:13:42,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 13:13:42,992 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-13 13:13:42,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:13:42,993 INFO L225 Difference]: With dead ends: 116 [2020-10-13 13:13:42,993 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 13:13:42,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:13:42,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 13:13:42,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-13 13:13:42,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 13:13:42,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-13 13:13:42,998 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 104 [2020-10-13 13:13:42,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:13:42,999 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-13 13:13:42,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:13:42,999 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-13 13:13:43,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 13:13:43,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:13:43,000 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 8, 8, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:13:43,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 13:13:43,001 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:13:43,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:13:43,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1266330973, now seen corresponding path program 21 times [2020-10-13 13:13:43,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:13:43,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309482270] [2020-10-13 13:13:43,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:13:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:43,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:43,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:43,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:43,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:48,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:48,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 13:13:48,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:13:48,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 13:13:48,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:13:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 13:13:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:13:48,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:48,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:13:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:48,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:48,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:48,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:13:48,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:13:48,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:13:48,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:48,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:48,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:48,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:48,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:48,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 13:13:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:48,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:48,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:48,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:48,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:13:48,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:48,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 13:13:48,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:48,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:48,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:48,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:48,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:48,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:13:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:48,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:48,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:48,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:13:48,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:13:48,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 13:13:48,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:48,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:13:48,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:13:48,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:13:48,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:48,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 13:13:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:48,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:48,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:48,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:48,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:13:48,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:48,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 13:13:48,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:48,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:48,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 13:13:48,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:48,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:48,254 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 116 proven. 165 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-10-13 13:13:48,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309482270] [2020-10-13 13:13:48,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:13:48,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 13:13:48,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411365130] [2020-10-13 13:13:48,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:13:48,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:13:48,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:13:48,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:13:48,256 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 11 states. [2020-10-13 13:13:48,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:13:48,492 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2020-10-13 13:13:48,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 13:13:48,493 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 106 [2020-10-13 13:13:48,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:13:48,494 INFO L225 Difference]: With dead ends: 117 [2020-10-13 13:13:48,494 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 13:13:48,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:13:48,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 13:13:48,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-13 13:13:48,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-13 13:13:48,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-13 13:13:48,499 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 106 [2020-10-13 13:13:48,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:13:48,499 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-13 13:13:48,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:13:48,500 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-13 13:13:48,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 13:13:48,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:13:48,500 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:13:48,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 13:13:48,501 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:13:48,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:13:48,501 INFO L82 PathProgramCache]: Analyzing trace with hash -278698053, now seen corresponding path program 22 times [2020-10-13 13:13:48,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:13:48,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274042736] [2020-10-13 13:13:48,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:13:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:48,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:48,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:48,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:48,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:53,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:53,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 13:13:53,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:13:53,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 13:13:53,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:53,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:13:53,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:13:53,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:13:53,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:53,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:13:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:53,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:53,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:53,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:13:53,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:13:53,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:13:53,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:53,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:53,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:53,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:53,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:53,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 13:13:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:53,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:53,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:53,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:53,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:13:53,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:53,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 13:13:53,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:13:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:53,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:53,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 13:13:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:53,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:53,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:53,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:53,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:13:53,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:53,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 13:13:53,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:53,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:53,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:13:53,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:53,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:53,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 13:13:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:53,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:53,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:53,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:53,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:13:53,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:53,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 13:13:53,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:13:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:53,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:53,776 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-13 13:13:53,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274042736] [2020-10-13 13:13:53,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:13:53,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 13:13:53,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022946061] [2020-10-13 13:13:53,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:13:53,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:13:53,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:13:53,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:13:53,778 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-13 13:13:53,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:13:53,890 INFO L93 Difference]: Finished difference Result 122 states and 130 transitions. [2020-10-13 13:13:53,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:13:53,891 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-10-13 13:13:53,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:13:53,891 INFO L225 Difference]: With dead ends: 122 [2020-10-13 13:13:53,891 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 13:13:53,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:13:53,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 13:13:53,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-13 13:13:53,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 13:13:53,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-13 13:13:53,897 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 112 [2020-10-13 13:13:53,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:13:53,898 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-13 13:13:53,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:13:53,898 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-13 13:13:53,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 13:13:53,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:13:53,899 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 9, 9, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:13:53,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 13:13:53,900 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:13:53,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:13:53,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1126141923, now seen corresponding path program 23 times [2020-10-13 13:13:53,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:13:53,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963114962] [2020-10-13 13:13:53,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:13:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:53,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:53,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:53,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:54,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:58,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:58,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 13:13:58,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:13:58,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 13:13:58,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:58,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:13:58,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-13 13:13:58,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:13:58,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:58,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:13:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:58,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:58,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:58,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:13:58,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:13:58,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:13:58,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:58,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:58,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:58,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:13:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:58,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:58,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:59,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:59,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:13:59,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:59,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 13:13:59,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:59,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:59,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:59,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:59,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:59,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 13:13:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:59,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:59,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:59,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:13:59,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:13:59,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 13:13:59,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:13:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:13:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:13:59,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:59,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 13:13:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:59,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:59,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:59,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:59,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:13:59,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:59,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 13:13:59,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:59,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:59,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:13:59,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:59,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:59,257 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 148 proven. 212 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2020-10-13 13:13:59,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963114962] [2020-10-13 13:13:59,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:13:59,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 13:13:59,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964775178] [2020-10-13 13:13:59,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:13:59,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:13:59,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:13:59,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:13:59,259 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 12 states. [2020-10-13 13:13:59,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:13:59,506 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2020-10-13 13:13:59,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:13:59,506 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 114 [2020-10-13 13:13:59,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:13:59,508 INFO L225 Difference]: With dead ends: 123 [2020-10-13 13:13:59,508 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 13:13:59,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-13 13:13:59,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 13:13:59,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-13 13:13:59,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 13:13:59,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-13 13:13:59,514 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 114 [2020-10-13 13:13:59,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:13:59,515 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-13 13:13:59,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:13:59,515 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-13 13:13:59,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 13:13:59,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:13:59,516 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 9, 9, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:13:59,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 13:13:59,517 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:13:59,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:13:59,517 INFO L82 PathProgramCache]: Analyzing trace with hash -967910789, now seen corresponding path program 24 times [2020-10-13 13:13:59,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:13:59,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224122845] [2020-10-13 13:13:59,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:13:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:59,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:59,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:59,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:59,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:04,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:04,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 13:14:04,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:14:04,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 13:14:04,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:04,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:14:04,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 13:14:04,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:14:04,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:04,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:14:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:04,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:04,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:04,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:14:04,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:04,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:14:04,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:04,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:04,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:14:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:04,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:04,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:04,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:04,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 13:14:04,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:14:04,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 13:14:04,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:04,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:04,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:04,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:04,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:04,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 13:14:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:04,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:04,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:04,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:04,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 13:14:04,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:14:04,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 13:14:04,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:04,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:04,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:04,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:04,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:04,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 13:14:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:04,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:04,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:04,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:04,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 13:14:04,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:14:04,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 13:14:04,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:04,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:04,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 13:14:04,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:04,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:04,819 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2020-10-13 13:14:04,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224122845] [2020-10-13 13:14:04,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:14:04,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 13:14:04,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405381458] [2020-10-13 13:14:04,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:14:04,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:14:04,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:14:04,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:14:04,821 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 12 states. [2020-10-13 13:14:04,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:14:04,943 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2020-10-13 13:14:04,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:14:04,943 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 120 [2020-10-13 13:14:04,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:14:04,944 INFO L225 Difference]: With dead ends: 107 [2020-10-13 13:14:04,944 INFO L226 Difference]: Without dead ends: 78 [2020-10-13 13:14:04,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:14:04,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-13 13:14:04,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-13 13:14:04,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 13:14:04,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-13 13:14:04,952 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 120 [2020-10-13 13:14:04,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:14:04,953 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-13 13:14:04,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:14:04,953 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-13 13:14:04,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 13:14:04,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:14:04,960 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 9, 9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:14:04,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 13:14:04,961 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:14:04,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:14:04,961 INFO L82 PathProgramCache]: Analyzing trace with hash -953070087, now seen corresponding path program 25 times [2020-10-13 13:14:04,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:14:04,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092450675] [2020-10-13 13:14:04,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:14:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:04,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:05,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:05,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:05,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:09,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:09,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 13:14:09,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:14:09,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 13:14:09,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:09,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:14:09,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:14:09,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 13:14:09,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:10,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:14:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:10,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:10,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:10,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:14:10,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:10,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:14:10,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:10,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:10,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:10,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:10,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:10,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:14:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:10,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:10,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:10,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:10,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 13:14:10,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:14:10,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 13:14:10,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:10,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:10,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 13:14:10,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:10,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:10,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 13:14:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:10,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:10,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:10,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:10,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 13:14:10,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:14:10,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 13:14:10,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:10,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:10,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 13:14:10,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:10,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:10,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 13:14:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:10,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:10,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:10,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:10,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 13:14:10,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:14:10,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 13:14:10,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:10,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:10,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 13:14:10,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:10,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:10,266 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2020-10-13 13:14:10,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092450675] [2020-10-13 13:14:10,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:14:10,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 13:14:10,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845585675] [2020-10-13 13:14:10,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:14:10,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:14:10,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:14:10,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:14:10,268 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 13 states. [2020-10-13 13:14:10,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:14:10,391 INFO L93 Difference]: Finished difference Result 132 states and 140 transitions. [2020-10-13 13:14:10,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:14:10,392 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 122 [2020-10-13 13:14:10,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:14:10,392 INFO L225 Difference]: With dead ends: 132 [2020-10-13 13:14:10,393 INFO L226 Difference]: Without dead ends: 80 [2020-10-13 13:14:10,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:14:10,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-13 13:14:10,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-13 13:14:10,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 13:14:10,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-13 13:14:10,398 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 122 [2020-10-13 13:14:10,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:14:10,398 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-13 13:14:10,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:14:10,399 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-13 13:14:10,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 13:14:10,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:14:10,400 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:14:10,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 13:14:10,400 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:14:10,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:14:10,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1047477285, now seen corresponding path program 26 times [2020-10-13 13:14:10,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:14:10,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827051165] [2020-10-13 13:14:10,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:14:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:10,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:10,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:10,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:10,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:15,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:15,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 13:14:15,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:14:15,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 13:14:15,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:15,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:14:15,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 13:14:15,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 13:14:15,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:15,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:14:15,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:15,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:15,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:15,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:14:15,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:15,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 13:14:15,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:15,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:15,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:15,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:15,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:15,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 13:14:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:15,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:15,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:15,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 13:14:15,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:15,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 13:14:15,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:15,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:14:15,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:14:15,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 13:14:15,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:15,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 13:14:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:15,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:15,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:15,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:15,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 13:14:15,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:14:15,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 13:14:15,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:15,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:15,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 13:14:15,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:15,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:15,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 13:14:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:15,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:15,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:15,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:15,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 13:14:15,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:14:15,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 13:14:15,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:15,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:15,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 13:14:15,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:15,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 979 backedges. 0 proven. 449 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2020-10-13 13:14:15,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827051165] [2020-10-13 13:14:15,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:14:15,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 13:14:15,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633112691] [2020-10-13 13:14:15,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:14:15,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:14:15,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:14:15,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:14:15,717 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 13 states. [2020-10-13 13:14:15,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:14:15,954 INFO L93 Difference]: Finished difference Result 133 states and 143 transitions. [2020-10-13 13:14:15,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:14:15,955 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 124 [2020-10-13 13:14:15,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:14:15,956 INFO L225 Difference]: With dead ends: 133 [2020-10-13 13:14:15,957 INFO L226 Difference]: Without dead ends: 82 [2020-10-13 13:14:15,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-13 13:14:15,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-13 13:14:15,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-13 13:14:15,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 13:14:15,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-13 13:14:15,962 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 124 [2020-10-13 13:14:15,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:14:15,963 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-13 13:14:15,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:14:15,963 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-13 13:14:15,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 13:14:15,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:14:15,964 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:14:15,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 13:14:15,964 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:14:15,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:14:15,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1422542521, now seen corresponding path program 27 times [2020-10-13 13:14:15,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:14:15,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669798174] [2020-10-13 13:14:15,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:14:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:15,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:16,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:16,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:16,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:21,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:21,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 13:14:21,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:14:21,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 13:14:21,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:21,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:14:21,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 13:14:21,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 13:14:21,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:21,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:14:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:21,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:21,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:21,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:14:21,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:21,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:14:21,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:21,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:21,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:21,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:21,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:21,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 13:14:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:21,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:21,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:21,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:21,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:14:21,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:14:21,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 13:14:21,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:21,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:21,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:21,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:21,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:21,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:14:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:21,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:21,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:21,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:21,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:14:21,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:14:21,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 13:14:21,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:21,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:21,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:21,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:21,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:21,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 13:14:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:21,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:21,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:21,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:21,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:14:21,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:14:21,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 13:14:21,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:21,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:21,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:14:21,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:21,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:21,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-13 13:14:21,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669798174] [2020-10-13 13:14:21,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:14:21,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 13:14:21,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70362808] [2020-10-13 13:14:21,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:14:21,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:14:21,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:14:21,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:14:21,319 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 13 states. [2020-10-13 13:14:21,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:14:21,434 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2020-10-13 13:14:21,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:14:21,435 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-10-13 13:14:21,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:14:21,436 INFO L225 Difference]: With dead ends: 115 [2020-10-13 13:14:21,436 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 13:14:21,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:14:21,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 13:14:21,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-13 13:14:21,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 13:14:21,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-13 13:14:21,446 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 130 [2020-10-13 13:14:21,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:14:21,446 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-13 13:14:21,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:14:21,446 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-13 13:14:21,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 13:14:21,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:14:21,447 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:14:21,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 13:14:21,448 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:14:21,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:14:21,448 INFO L82 PathProgramCache]: Analyzing trace with hash 2069899959, now seen corresponding path program 28 times [2020-10-13 13:14:21,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:14:21,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806115753] [2020-10-13 13:14:21,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:14:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:21,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:21,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:21,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:21,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:26,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:26,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 13:14:26,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:14:26,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:14:26,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:26,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 13:14:26,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:14:26,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:14:26,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:26,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:14:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:26,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:26,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:26,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:14:26,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:26,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:14:26,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:26,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:26,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:26,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:26,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:26,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 13:14:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:26,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:26,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:26,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:26,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:14:26,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:14:26,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 13:14:26,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:26,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:26,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:14:26,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:26,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:26,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:14:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:26,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:26,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:26,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:26,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:14:26,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:14:26,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 13:14:26,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:26,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:26,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:14:26,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:26,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:26,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 13:14:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:26,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:26,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:26,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:26,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:14:26,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:14:26,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 13:14:26,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:26,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:26,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:14:26,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:26,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:26,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-13 13:14:26,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806115753] [2020-10-13 13:14:26,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:14:26,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 13:14:26,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508419889] [2020-10-13 13:14:26,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 13:14:26,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:14:26,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 13:14:26,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:14:26,793 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 14 states. [2020-10-13 13:14:26,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:14:26,897 INFO L93 Difference]: Finished difference Result 142 states and 150 transitions. [2020-10-13 13:14:26,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:14:26,897 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2020-10-13 13:14:26,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:14:26,898 INFO L225 Difference]: With dead ends: 142 [2020-10-13 13:14:26,899 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 13:14:26,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:14:26,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 13:14:26,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-13 13:14:26,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-13 13:14:26,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-13 13:14:26,906 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 132 [2020-10-13 13:14:26,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:14:26,906 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-13 13:14:26,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 13:14:26,906 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-13 13:14:26,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 13:14:26,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:14:26,907 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 11, 11, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:14:26,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 13:14:26,908 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:14:26,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:14:26,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1117203993, now seen corresponding path program 29 times [2020-10-13 13:14:26,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:14:26,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236030765] [2020-10-13 13:14:26,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:14:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:26,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:26,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:27,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:27,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:31,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:31,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 13:14:31,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:14:31,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-13 13:14:31,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:31,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 13:14:31,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-13 13:14:31,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:14:31,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:31,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:14:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:31,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:31,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:31,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:14:31,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:31,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:14:31,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:31,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:31,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:31,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:31,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:31,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 13:14:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:31,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:32,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:32,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:32,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:14:32,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:14:32,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 13:14:32,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:32,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:32,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:32,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:14:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:32,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:32,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:32,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:14:32,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:32,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 13:14:32,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:32,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 13:14:32,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:14:32,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:14:32,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:32,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 13:14:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:32,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:32,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:32,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:32,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:14:32,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:14:32,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 13:14:32,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:32,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:32,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:14:32,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:32,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:32,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 224 proven. 324 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2020-10-13 13:14:32,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236030765] [2020-10-13 13:14:32,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:14:32,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 13:14:32,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379695797] [2020-10-13 13:14:32,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 13:14:32,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:14:32,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 13:14:32,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:14:32,327 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 14 states. [2020-10-13 13:14:32,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:14:32,657 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2020-10-13 13:14:32,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:14:32,658 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 134 [2020-10-13 13:14:32,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:14:32,659 INFO L225 Difference]: With dead ends: 143 [2020-10-13 13:14:32,659 INFO L226 Difference]: Without dead ends: 88 [2020-10-13 13:14:32,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-13 13:14:32,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-13 13:14:32,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-13 13:14:32,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 13:14:32,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-13 13:14:32,667 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 134 [2020-10-13 13:14:32,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:14:32,668 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-13 13:14:32,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 13:14:32,668 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-13 13:14:32,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-13 13:14:32,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:14:32,669 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:14:32,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 13:14:32,670 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:14:32,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:14:32,670 INFO L82 PathProgramCache]: Analyzing trace with hash 942451063, now seen corresponding path program 30 times [2020-10-13 13:14:32,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:14:32,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653983604] [2020-10-13 13:14:32,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:14:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:32,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:32,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:32,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:33,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:37,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:37,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 13:14:37,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:14:37,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:14:37,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:37,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 13:14:37,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 13:14:37,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:14:37,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:37,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:14:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:37,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:37,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:37,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:14:37,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:37,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:14:37,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:37,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:37,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:37,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:37,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:37,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 13:14:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:37,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:37,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:37,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:37,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 13:14:37,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:14:37,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 13:14:37,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:37,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:37,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:37,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:37,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:37,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:14:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:37,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:37,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:37,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:37,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 13:14:37,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:14:37,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 13:14:37,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:37,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:37,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:37,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:37,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:37,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 13:14:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:37,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:37,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:38,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:38,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 13:14:38,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:14:38,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 13:14:38,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:38,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:38,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 13:14:38,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:38,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:38,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-13 13:14:38,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653983604] [2020-10-13 13:14:38,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:14:38,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 13:14:38,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227585624] [2020-10-13 13:14:38,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 13:14:38,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:14:38,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 13:14:38,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:14:38,045 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 14 states. [2020-10-13 13:14:38,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:14:38,193 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2020-10-13 13:14:38,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:14:38,194 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 140 [2020-10-13 13:14:38,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:14:38,195 INFO L225 Difference]: With dead ends: 123 [2020-10-13 13:14:38,195 INFO L226 Difference]: Without dead ends: 90 [2020-10-13 13:14:38,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:14:38,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-13 13:14:38,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-13 13:14:38,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 13:14:38,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-13 13:14:38,202 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 140 [2020-10-13 13:14:38,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:14:38,203 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-13 13:14:38,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 13:14:38,203 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-13 13:14:38,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 13:14:38,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:14:38,204 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:14:38,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 13:14:38,204 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:14:38,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:14:38,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1521459723, now seen corresponding path program 31 times [2020-10-13 13:14:38,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:14:38,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324900463] [2020-10-13 13:14:38,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:14:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:38,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:38,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:38,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:38,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:43,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:43,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 13:14:43,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:14:43,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 13:14:43,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:43,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:14:43,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 13:14:43,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 13:14:43,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:43,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:14:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:43,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:43,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:43,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:14:43,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:43,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:14:43,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:43,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:43,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:43,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:43,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:43,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 13:14:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:43,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:43,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:43,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:43,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 13:14:43,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:14:43,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 13:14:43,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:43,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:43,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:43,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:43,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:43,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:14:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:43,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:43,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:43,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 13:14:43,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:43,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 13:14:43,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:43,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:14:43,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:14:43,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 13:14:43,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:43,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 13:14:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:43,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:43,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:43,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:43,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 13:14:43,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:14:43,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 13:14:43,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:43,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 13:14:43,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:43,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:43,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 268 proven. 389 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2020-10-13 13:14:43,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324900463] [2020-10-13 13:14:43,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:14:43,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 13:14:43,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288539781] [2020-10-13 13:14:43,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 13:14:43,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:14:43,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 13:14:43,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:14:43,610 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 15 states. [2020-10-13 13:14:43,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:14:43,906 INFO L93 Difference]: Finished difference Result 151 states and 161 transitions. [2020-10-13 13:14:43,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:14:43,906 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 142 [2020-10-13 13:14:43,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:14:43,907 INFO L225 Difference]: With dead ends: 151 [2020-10-13 13:14:43,908 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 13:14:43,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-13 13:14:43,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 13:14:43,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-13 13:14:43,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 13:14:43,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-13 13:14:43,914 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 142 [2020-10-13 13:14:43,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:14:43,914 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-13 13:14:43,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 13:14:43,914 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-13 13:14:43,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 13:14:43,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:14:43,915 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 11, 11, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:14:43,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 13:14:43,916 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:14:43,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:14:43,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1929485485, now seen corresponding path program 32 times [2020-10-13 13:14:43,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:14:43,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412758964] [2020-10-13 13:14:43,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:14:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:43,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:43,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:43,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:44,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:48,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:48,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 13:14:48,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:14:48,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:14:48,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:48,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:14:48,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:14:48,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 13:14:48,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:49,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:14:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:49,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:49,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:49,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:14:49,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:49,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:14:49,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:49,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:49,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:49,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:49,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:49,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 13:14:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:49,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:49,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:49,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:49,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:14:49,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:14:49,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 13:14:49,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:49,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:49,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:14:49,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:49,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:49,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 13:14:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:49,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:49,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:49,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:49,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:14:49,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:14:49,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 13:14:49,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:49,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:49,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:14:49,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:49,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:49,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 13:14:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:49,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:49,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:49,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:49,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:14:49,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:14:49,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 13:14:49,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:49,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:49,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:14:49,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:49,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:49,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1504 trivial. 0 not checked. [2020-10-13 13:14:49,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412758964] [2020-10-13 13:14:49,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:14:49,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 13:14:49,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59297110] [2020-10-13 13:14:49,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 13:14:49,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:14:49,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 13:14:49,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:14:49,318 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 15 states. [2020-10-13 13:14:49,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:14:49,477 INFO L93 Difference]: Finished difference Result 156 states and 164 transitions. [2020-10-13 13:14:49,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:14:49,478 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2020-10-13 13:14:49,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:14:49,479 INFO L225 Difference]: With dead ends: 156 [2020-10-13 13:14:49,479 INFO L226 Difference]: Without dead ends: 94 [2020-10-13 13:14:49,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:14:49,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-13 13:14:49,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-13 13:14:49,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-13 13:14:49,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-13 13:14:49,484 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 148 [2020-10-13 13:14:49,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:14:49,485 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-13 13:14:49,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 13:14:49,485 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-13 13:14:49,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-13 13:14:49,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:14:49,486 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 12, 12, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:14:49,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 13:14:49,486 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:14:49,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:14:49,487 INFO L82 PathProgramCache]: Analyzing trace with hash -455712075, now seen corresponding path program 33 times [2020-10-13 13:14:49,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:14:49,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737576914] [2020-10-13 13:14:49,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:14:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:49,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:49,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:49,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:50,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:54,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:54,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 13:14:54,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:14:54,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 13:14:54,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:54,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:14:54,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-13 13:14:54,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 13:14:54,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:54,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:14:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:54,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:54,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:54,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:14:54,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:54,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 13:14:54,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:54,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:54,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:54,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:54,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:54,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 13:14:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:54,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:54,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:54,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:54,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:14:54,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:14:54,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 13:14:54,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:54,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:54,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:54,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:54,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:54,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:14:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:54,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:54,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:54,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:54,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:14:54,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:14:54,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 13:14:54,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:54,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:54,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:54,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:54,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:54,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 13:14:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:54,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:54,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:54,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:54,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:14:54,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:14:54,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 13:14:54,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:54,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:54,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:14:54,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:54,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:54,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1648 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2020-10-13 13:14:54,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737576914] [2020-10-13 13:14:54,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:14:54,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 13:14:54,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178277771] [2020-10-13 13:14:54,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 13:14:54,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:14:54,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 13:14:54,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:14:54,929 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 15 states. [2020-10-13 13:14:55,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:14:55,079 INFO L93 Difference]: Finished difference Result 131 states and 136 transitions. [2020-10-13 13:14:55,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:14:55,079 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 150 [2020-10-13 13:14:55,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:14:55,080 INFO L225 Difference]: With dead ends: 131 [2020-10-13 13:14:55,080 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 13:14:55,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:14:55,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 13:14:55,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-13 13:14:55,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 13:14:55,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-13 13:14:55,086 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 150 [2020-10-13 13:14:55,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:14:55,086 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-13 13:14:55,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 13:14:55,087 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-13 13:14:55,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 13:14:55,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:14:55,089 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 12, 12, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:14:55,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 13:14:55,090 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:14:55,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:14:55,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1800030131, now seen corresponding path program 34 times [2020-10-13 13:14:55,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:14:55,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382431902] [2020-10-13 13:14:55,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:14:55,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:55,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:55,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:55,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:55,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:00,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:00,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 13:15:00,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:15:00,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-13 13:15:00,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:00,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 13:15:00,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 13:15:00,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 13:15:00,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:00,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:00,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:00,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:00,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:00,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:00,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:00,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:15:00,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:00,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:00,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:00,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:00,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:00,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 13:15:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:00,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:00,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:00,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:15:00,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:00,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 13:15:00,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:00,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 13:15:00,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:15:00,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 13:15:00,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:00,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:15:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:00,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:00,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:00,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:00,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:15:00,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:15:00,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 13:15:00,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:00,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:00,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:15:00,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:00,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:00,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 13:15:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:00,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:00,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:00,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:00,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:15:00,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:15:00,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 13:15:00,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:00,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:00,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:15:00,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:00,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:00,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 0 proven. 776 refuted. 0 times theorem prover too weak. 895 trivial. 0 not checked. [2020-10-13 13:15:00,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382431902] [2020-10-13 13:15:00,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:15:00,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 13:15:00,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224817238] [2020-10-13 13:15:00,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 13:15:00,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:00,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 13:15:00,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 13:15:00,567 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 16 states. [2020-10-13 13:15:00,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:00,882 INFO L93 Difference]: Finished difference Result 161 states and 171 transitions. [2020-10-13 13:15:00,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 13:15:00,883 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 152 [2020-10-13 13:15:00,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:00,884 INFO L225 Difference]: With dead ends: 161 [2020-10-13 13:15:00,884 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 13:15:00,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-13 13:15:00,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 13:15:00,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-13 13:15:00,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-13 13:15:00,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-13 13:15:00,891 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 152 [2020-10-13 13:15:00,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:00,891 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-13 13:15:00,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 13:15:00,892 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-13 13:15:00,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-13 13:15:00,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:00,893 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 12, 12, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:15:00,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 13:15:00,893 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:00,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:00,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1197352337, now seen corresponding path program 35 times [2020-10-13 13:15:00,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:00,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506938337] [2020-10-13 13:15:00,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:00,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:00,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:00,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:01,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:05,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:05,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-13 13:15:05,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:15:05,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-13 13:15:05,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:05,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 13:15:05,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:15:05,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 13:15:05,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:06,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:06,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:06,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:06,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:06,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:06,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:15:06,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:06,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:06,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:06,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:06,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:06,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 13:15:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:06,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:06,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:06,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:06,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 13:15:06,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:15:06,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 13:15:06,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:06,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:06,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 13:15:06,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:06,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:06,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 13:15:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:06,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:06,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:06,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:06,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 13:15:06,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:15:06,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 13:15:06,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:06,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:06,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 13:15:06,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:06,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:06,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 13:15:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:06,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:06,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:06,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:06,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 13:15:06,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:15:06,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 13:15:06,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:06,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:06,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 13:15:06,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:06,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:06,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1902 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1758 trivial. 0 not checked. [2020-10-13 13:15:06,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506938337] [2020-10-13 13:15:06,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:15:06,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 13:15:06,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887813817] [2020-10-13 13:15:06,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 13:15:06,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:06,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 13:15:06,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 13:15:06,365 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 16 states. [2020-10-13 13:15:06,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:06,507 INFO L93 Difference]: Finished difference Result 166 states and 174 transitions. [2020-10-13 13:15:06,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 13:15:06,508 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 158 [2020-10-13 13:15:06,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:06,508 INFO L225 Difference]: With dead ends: 166 [2020-10-13 13:15:06,509 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 13:15:06,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 13:15:06,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 13:15:06,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-13 13:15:06,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 13:15:06,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-13 13:15:06,514 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 158 [2020-10-13 13:15:06,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:06,514 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-13 13:15:06,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 13:15:06,514 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-13 13:15:06,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 13:15:06,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:06,516 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:15:06,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 13:15:06,516 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:06,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:06,516 INFO L82 PathProgramCache]: Analyzing trace with hash -871378317, now seen corresponding path program 36 times [2020-10-13 13:15:06,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:06,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368788132] [2020-10-13 13:15:06,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:06,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:06,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:06,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:07,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:11,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:11,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 13:15:11,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:15:11,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-13 13:15:11,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:11,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 13:15:11,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 13:15:11,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 13:15:11,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:11,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:11,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:11,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:11,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:11,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:11,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:15:11,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:11,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:11,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:11,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:11,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:11,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 13:15:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:11,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:11,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:11,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:11,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 13:15:11,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:15:11,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 13:15:11,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:11,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:11,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:11,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:11,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:11,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:15:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:11,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:11,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:11,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:11,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 13:15:11,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:15:11,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 13:15:11,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:11,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:11,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:11,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:11,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:11,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 13:15:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:11,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:12,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:12,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:12,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 13:15:12,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:15:12,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 13:15:12,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 13:15:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:12,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1927 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1783 trivial. 0 not checked. [2020-10-13 13:15:12,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368788132] [2020-10-13 13:15:12,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:15:12,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 13:15:12,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535353531] [2020-10-13 13:15:12,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 13:15:12,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:12,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 13:15:12,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 13:15:12,056 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 16 states. [2020-10-13 13:15:12,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:12,170 INFO L93 Difference]: Finished difference Result 139 states and 144 transitions. [2020-10-13 13:15:12,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 13:15:12,170 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 160 [2020-10-13 13:15:12,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:12,171 INFO L225 Difference]: With dead ends: 139 [2020-10-13 13:15:12,171 INFO L226 Difference]: Without dead ends: 102 [2020-10-13 13:15:12,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 13:15:12,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-13 13:15:12,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-13 13:15:12,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 13:15:12,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-13 13:15:12,176 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 160 [2020-10-13 13:15:12,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:12,176 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-13 13:15:12,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 13:15:12,177 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-13 13:15:12,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 13:15:12,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:12,178 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:15:12,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 13:15:12,178 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:12,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:12,179 INFO L82 PathProgramCache]: Analyzing trace with hash 914245617, now seen corresponding path program 37 times [2020-10-13 13:15:12,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:12,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658274996] [2020-10-13 13:15:12,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:12,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:12,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:12,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:13,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:17,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:17,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 13:15:17,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:15:17,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5130 [2020-10-13 13:15:17,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:17,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:15:17,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 13:15:17,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:15:17,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:17,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:17,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:17,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:17,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:17,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:17,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:15:17,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:17,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:17,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 13:15:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:17,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:17,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:17,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 13:15:17,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:17,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 13:15:17,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:17,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:15:17,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:15:17,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:15:17,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:17,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:15:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:17,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:17,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:17,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:17,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 13:15:17,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:15:17,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 13:15:17,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:17,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:17,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 13:15:17,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:17,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:17,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 13:15:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:17,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:17,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:17,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:17,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 13:15:17,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:15:17,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 13:15:17,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:17,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:17,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 13:15:17,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:17,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:17,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 0 proven. 905 refuted. 0 times theorem prover too weak. 1047 trivial. 0 not checked. [2020-10-13 13:15:17,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658274996] [2020-10-13 13:15:17,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:15:17,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 13:15:17,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499559461] [2020-10-13 13:15:17,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 13:15:17,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:17,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 13:15:17,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:15:17,731 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 17 states. [2020-10-13 13:15:18,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:18,141 INFO L93 Difference]: Finished difference Result 171 states and 181 transitions. [2020-10-13 13:15:18,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 13:15:18,142 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 162 [2020-10-13 13:15:18,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:18,143 INFO L225 Difference]: With dead ends: 171 [2020-10-13 13:15:18,143 INFO L226 Difference]: Without dead ends: 104 [2020-10-13 13:15:18,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-13 13:15:18,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-13 13:15:18,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-13 13:15:18,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-13 13:15:18,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-13 13:15:18,150 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 162 [2020-10-13 13:15:18,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:18,150 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-13 13:15:18,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 13:15:18,150 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-13 13:15:18,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 13:15:18,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:18,151 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 13, 13, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:15:18,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 13:15:18,152 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:18,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:18,152 INFO L82 PathProgramCache]: Analyzing trace with hash -593961393, now seen corresponding path program 38 times [2020-10-13 13:15:18,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:18,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185875854] [2020-10-13 13:15:18,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:18,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:18,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:18,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:19,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:23,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:23,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 13:15:23,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:15:23,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-13 13:15:23,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:23,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:15:23,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 13:15:23,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:15:23,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:23,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:23,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:23,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:23,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:23,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:23,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:15:23,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:23,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:23,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:23,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:23,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:23,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 13:15:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:23,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:23,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:23,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:23,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:15:23,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:15:23,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 13:15:23,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:23,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:23,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:23,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:23,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:23,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:15:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:23,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:23,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:23,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:23,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:15:23,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:15:23,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 13:15:23,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:23,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:23,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:23,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:23,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:23,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 13:15:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:23,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:23,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:23,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:23,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:15:23,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:15:23,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 13:15:23,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:23,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:23,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:15:23,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:23,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:23,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2201 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2032 trivial. 0 not checked. [2020-10-13 13:15:23,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185875854] [2020-10-13 13:15:23,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:15:23,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 13:15:23,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725824888] [2020-10-13 13:15:23,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 13:15:23,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:23,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 13:15:23,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:15:23,720 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 17 states. [2020-10-13 13:15:23,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:23,813 INFO L93 Difference]: Finished difference Result 145 states and 150 transitions. [2020-10-13 13:15:23,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 13:15:23,814 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 168 [2020-10-13 13:15:23,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:23,815 INFO L225 Difference]: With dead ends: 145 [2020-10-13 13:15:23,815 INFO L226 Difference]: Without dead ends: 106 [2020-10-13 13:15:23,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:15:23,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-13 13:15:23,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-13 13:15:23,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-13 13:15:23,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-13 13:15:23,820 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 168 [2020-10-13 13:15:23,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:23,821 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-13 13:15:23,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 13:15:23,821 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-13 13:15:23,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 13:15:23,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:23,822 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:15:23,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 13:15:23,822 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:23,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:23,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1305040077, now seen corresponding path program 39 times [2020-10-13 13:15:23,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:23,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050549697] [2020-10-13 13:15:23,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:23,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:23,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:23,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:24,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:28,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:28,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 13:15:28,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:15:28,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 13:15:28,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:28,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:15:28,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:15:28,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:15:28,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:29,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:29,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:29,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:29,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:29,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:29,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:15:29,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:29,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:29,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:29,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:29,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:29,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 13:15:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:29,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:29,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:29,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:29,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:15:29,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:15:29,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 13:15:29,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:29,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:29,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:15:29,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:29,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:29,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:15:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:29,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:29,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:29,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:29,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:15:29,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:15:29,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 13:15:29,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:29,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:29,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:15:29,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:29,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:29,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 13:15:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:29,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:29,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:29,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:29,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:15:29,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:15:29,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 13:15:29,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:29,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:29,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:15:29,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:29,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2228 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2020-10-13 13:15:29,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050549697] [2020-10-13 13:15:29,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:15:29,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 13:15:29,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779725256] [2020-10-13 13:15:29,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 13:15:29,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:29,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 13:15:29,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:15:29,283 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 17 states. [2020-10-13 13:15:29,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:29,415 INFO L93 Difference]: Finished difference Result 180 states and 188 transitions. [2020-10-13 13:15:29,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 13:15:29,415 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 170 [2020-10-13 13:15:29,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:29,417 INFO L225 Difference]: With dead ends: 180 [2020-10-13 13:15:29,417 INFO L226 Difference]: Without dead ends: 108 [2020-10-13 13:15:29,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:15:29,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-13 13:15:29,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-13 13:15:29,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 13:15:29,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-13 13:15:29,422 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 170 [2020-10-13 13:15:29,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:29,423 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-13 13:15:29,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 13:15:29,423 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-13 13:15:29,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 13:15:29,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:29,424 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:15:29,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 13:15:29,424 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:29,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:29,425 INFO L82 PathProgramCache]: Analyzing trace with hash -385565009, now seen corresponding path program 40 times [2020-10-13 13:15:29,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:29,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166026361] [2020-10-13 13:15:29,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:29,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:29,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:29,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:30,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:34,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:34,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 13:15:34,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:15:34,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 13:15:34,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:34,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 13:15:34,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 13:15:34,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 13:15:34,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:34,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:34,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:34,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:34,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:34,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:34,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:15:34,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:34,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:34,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:34,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:34,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:34,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 13:15:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:34,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:34,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:34,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:34,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:15:34,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:15:34,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 13:15:34,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:34,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:34,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:34,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:34,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:34,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:15:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:34,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:34,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:34,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:15:34,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:34,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 13:15:34,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:34,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 13:15:34,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:15:34,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 13:15:34,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:34,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 13:15:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:34,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:34,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:34,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:34,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:15:34,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:15:34,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 13:15:34,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:34,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:34,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:15:34,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:34,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:34,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 424 proven. 620 refuted. 0 times theorem prover too weak. 1211 trivial. 0 not checked. [2020-10-13 13:15:34,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166026361] [2020-10-13 13:15:34,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:15:34,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 13:15:34,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401728687] [2020-10-13 13:15:34,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 13:15:34,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:34,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 13:15:34,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:15:34,941 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 18 states. [2020-10-13 13:15:35,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:35,380 INFO L93 Difference]: Finished difference Result 181 states and 191 transitions. [2020-10-13 13:15:35,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 13:15:35,380 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 172 [2020-10-13 13:15:35,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:35,381 INFO L225 Difference]: With dead ends: 181 [2020-10-13 13:15:35,381 INFO L226 Difference]: Without dead ends: 110 [2020-10-13 13:15:35,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 13:15:35,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-13 13:15:35,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-13 13:15:35,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-13 13:15:35,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-10-13 13:15:35,387 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 172 [2020-10-13 13:15:35,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:35,387 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-10-13 13:15:35,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 13:15:35,387 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-10-13 13:15:35,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 13:15:35,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:35,388 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 14, 14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:15:35,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 13:15:35,389 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:35,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:35,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1649480307, now seen corresponding path program 41 times [2020-10-13 13:15:35,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:35,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217375486] [2020-10-13 13:15:35,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:35,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:35,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:35,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:35,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:40,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:40,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-13 13:15:40,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:15:40,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-13 13:15:40,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:40,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 13:15:40,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-13 13:15:40,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 13:15:40,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:40,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:40,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:40,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:40,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:40,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:40,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:15:40,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:40,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:40,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:40,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:40,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:40,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 13:15:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:40,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:40,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:40,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:40,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 13:15:40,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:15:40,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 13:15:40,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:40,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:40,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:40,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:40,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:40,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:15:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:40,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:40,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:40,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:40,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 13:15:40,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:15:40,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 13:15:40,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:40,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:40,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:40,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:40,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:40,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 13:15:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:40,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:40,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:40,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:40,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 13:15:40,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:15:40,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 13:15:40,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:40,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:40,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 13:15:40,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:40,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:41,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2522 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2326 trivial. 0 not checked. [2020-10-13 13:15:41,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217375486] [2020-10-13 13:15:41,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:15:41,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 13:15:41,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807728765] [2020-10-13 13:15:41,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 13:15:41,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:41,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 13:15:41,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:15:41,014 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 18 states. [2020-10-13 13:15:41,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:41,186 INFO L93 Difference]: Finished difference Result 153 states and 158 transitions. [2020-10-13 13:15:41,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 13:15:41,187 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 178 [2020-10-13 13:15:41,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:41,188 INFO L225 Difference]: With dead ends: 153 [2020-10-13 13:15:41,188 INFO L226 Difference]: Without dead ends: 112 [2020-10-13 13:15:41,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:15:41,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-13 13:15:41,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-13 13:15:41,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-13 13:15:41,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2020-10-13 13:15:41,194 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 178 [2020-10-13 13:15:41,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:41,195 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2020-10-13 13:15:41,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 13:15:41,195 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2020-10-13 13:15:41,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 13:15:41,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:41,196 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:15:41,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 13:15:41,197 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:41,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:41,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1194071179, now seen corresponding path program 42 times [2020-10-13 13:15:41,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:41,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118894550] [2020-10-13 13:15:41,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:41,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:41,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:41,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:42,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:46,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:46,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 13:15:46,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:15:46,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-13 13:15:46,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:46,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 13:15:46,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:15:46,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 13:15:46,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:46,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:46,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:46,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:46,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:46,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:46,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:15:46,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:46,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:46,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:46,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:46,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:46,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 13:15:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:46,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:46,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:46,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:46,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 13:15:46,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:15:46,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 13:15:46,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:46,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:46,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 13:15:46,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:46,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:46,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:15:46,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:46,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:46,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:46,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:46,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 13:15:46,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:15:46,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 13:15:46,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:46,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:46,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 13:15:46,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:46,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:46,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-13 13:15:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:46,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:46,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:46,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:46,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 13:15:46,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:15:46,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 13:15:46,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:46,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:46,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 13:15:46,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:46,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:46,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2355 trivial. 0 not checked. [2020-10-13 13:15:46,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118894550] [2020-10-13 13:15:46,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:15:46,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 13:15:46,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419254550] [2020-10-13 13:15:46,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 13:15:46,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:46,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 13:15:46,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:15:46,795 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand 18 states. [2020-10-13 13:15:46,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:46,954 INFO L93 Difference]: Finished difference Result 190 states and 198 transitions. [2020-10-13 13:15:46,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 13:15:46,954 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 180 [2020-10-13 13:15:46,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:46,955 INFO L225 Difference]: With dead ends: 190 [2020-10-13 13:15:46,956 INFO L226 Difference]: Without dead ends: 114 [2020-10-13 13:15:46,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:15:46,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-13 13:15:46,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-13 13:15:46,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-13 13:15:46,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2020-10-13 13:15:46,962 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 180 [2020-10-13 13:15:46,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:46,962 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2020-10-13 13:15:46,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 13:15:46,962 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2020-10-13 13:15:46,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-13 13:15:46,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:46,964 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:15:46,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 13:15:46,964 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:46,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:46,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1814164499, now seen corresponding path program 43 times [2020-10-13 13:15:46,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:46,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315922890] [2020-10-13 13:15:46,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:46,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:47,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:47,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:48,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking...