/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=BIGGEST --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/max40-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 18:27:59,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 18:27:59,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 18:27:59,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 18:27:59,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 18:27:59,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 18:27:59,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 18:27:59,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 18:27:59,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 18:27:59,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 18:27:59,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 18:27:59,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 18:27:59,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 18:27:59,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 18:27:59,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 18:27:59,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 18:27:59,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 18:27:59,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 18:27:59,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 18:27:59,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 18:27:59,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 18:27:59,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 18:27:59,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 18:27:59,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 18:27:59,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 18:27:59,235 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 18:27:59,235 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 18:27:59,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 18:27:59,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 18:27:59,240 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 18:27:59,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 18:27:59,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 18:27:59,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 18:27:59,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 18:27:59,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 18:27:59,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 18:27:59,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 18:27:59,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 18:27:59,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 18:27:59,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 18:27:59,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 18:27:59,247 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 [2020-10-12 18:27:59,283 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 18:27:59,283 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 18:27:59,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 18:27:59,285 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 18:27:59,285 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 18:27:59,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 18:27:59,286 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 18:27:59,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 18:27:59,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 18:27:59,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 18:27:59,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 18:27:59,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 18:27:59,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 18:27:59,288 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 18:27:59,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 18:27:59,288 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 18:27:59,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 18:27:59,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 18:27:59,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 18:27:59,289 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 18:27:59,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 18:27:59,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 18:27:59,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 18:27:59,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 18:27:59,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 18:27:59,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 18:27:59,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 18:27:59,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 18:27:59,291 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 18:27:59,291 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 18:27:59,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 18:27:59,624 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 18:27:59,629 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 18:27:59,631 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 18:27:59,632 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 18:27:59,632 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max40-1.i [2020-10-12 18:27:59,692 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0aa0cc20/0a77ea5656034a32924512df4897221d/FLAGafa3fd99d [2020-10-12 18:28:00,178 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 18:28:00,178 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/max40-1.i [2020-10-12 18:28:00,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0aa0cc20/0a77ea5656034a32924512df4897221d/FLAGafa3fd99d [2020-10-12 18:28:00,598 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0aa0cc20/0a77ea5656034a32924512df4897221d [2020-10-12 18:28:00,606 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 18:28:00,607 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 18:28:00,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 18:28:00,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 18:28:00,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 18:28:00,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:28:00" (1/1) ... [2020-10-12 18:28:00,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ed95284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:28:00, skipping insertion in model container [2020-10-12 18:28:00,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:28:00" (1/1) ... [2020-10-12 18:28:00,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 18:28:00,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 18:28:00,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:28:00,825 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 18:28:00,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:28:00,861 INFO L208 MainTranslator]: Completed translation [2020-10-12 18:28:00,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:28:00 WrapperNode [2020-10-12 18:28:00,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 18:28:00,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 18:28:00,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 18:28:00,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 18:28:00,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:28:00" (1/1) ... [2020-10-12 18:28:00,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:28:00" (1/1) ... [2020-10-12 18:28:00,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:28:00" (1/1) ... [2020-10-12 18:28:00,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:28:00" (1/1) ... [2020-10-12 18:28:00,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:28:00" (1/1) ... [2020-10-12 18:28:00,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:28:00" (1/1) ... [2020-10-12 18:28:00,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:28:00" (1/1) ... [2020-10-12 18:28:00,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 18:28:00,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 18:28:00,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 18:28:00,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 18:28:00,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:28:00" (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 [2020-10-12 18:28:01,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 18:28:01,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 18:28:01,043 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2020-10-12 18:28:01,043 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 18:28:01,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 18:28:01,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 18:28:01,044 INFO L130 BoogieDeclarations]: Found specification of procedure max [2020-10-12 18:28:01,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 18:28:01,045 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 18:28:01,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 18:28:01,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 18:28:01,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 18:28:01,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 18:28:01,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 18:28:01,366 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 18:28:01,367 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 18:28:01,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:28:01 BoogieIcfgContainer [2020-10-12 18:28:01,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 18:28:01,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 18:28:01,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 18:28:01,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 18:28:01,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:28:00" (1/3) ... [2020-10-12 18:28:01,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615dff97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:28:01, skipping insertion in model container [2020-10-12 18:28:01,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:28:00" (2/3) ... [2020-10-12 18:28:01,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615dff97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:28:01, skipping insertion in model container [2020-10-12 18:28:01,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:28:01" (3/3) ... [2020-10-12 18:28:01,378 INFO L109 eAbstractionObserver]: Analyzing ICFG max40-1.i [2020-10-12 18:28:01,388 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 18:28:01,395 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 18:28:01,408 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 18:28:01,431 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 18:28:01,432 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 18:28:01,432 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 18:28:01,432 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 18:28:01,432 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 18:28:01,432 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 18:28:01,432 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 18:28:01,432 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 18:28:01,450 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-12 18:28:01,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 18:28:01,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:01,457 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] [2020-10-12 18:28:01,458 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:01,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:01,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1379671032, now seen corresponding path program 1 times [2020-10-12 18:28:01,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:01,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900077688] [2020-10-12 18:28:01,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:01,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:01,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:01,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:01,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:01,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:02,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:02,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:02,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:28:02,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:28:02,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1308 [2020-10-12 18:28:02,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:02,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:28:02,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:28:02,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 18:28:02,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 18:28:03,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:03,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:03,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:03,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:03,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:03,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:28:03,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:03,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:03,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:03,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:03,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:28:03,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:03,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:03,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:03,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:03,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:28:03,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:03,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 18:28:03,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:03,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:28:03,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:03,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:28:03,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:28:03,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 18:28:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:03,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:03,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:03,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:03,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:28:03,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:03,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 18:28:03,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:03,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:28:03,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:03,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:28:03,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:03,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:28:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:03,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:03,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:03,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:03,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:28:03,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:03,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 18:28:03,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:03,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:28:03,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:03,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:28:03,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:03,363 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 18:28:03,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900077688] [2020-10-12 18:28:03,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:28:03,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 18:28:03,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769965539] [2020-10-12 18:28:03,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:28:03,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:03,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:28:03,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:28:03,388 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 11 states. [2020-10-12 18:28:03,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:03,739 INFO L93 Difference]: Finished difference Result 89 states and 129 transitions. [2020-10-12 18:28:03,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:28:03,741 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-12 18:28:03,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:03,752 INFO L225 Difference]: With dead ends: 89 [2020-10-12 18:28:03,752 INFO L226 Difference]: Without dead ends: 54 [2020-10-12 18:28:03,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:28:03,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-12 18:28:03,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2020-10-12 18:28:03,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-12 18:28:03,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2020-10-12 18:28:03,812 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 32 [2020-10-12 18:28:03,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:03,812 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2020-10-12 18:28:03,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:28:03,813 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2020-10-12 18:28:03,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 18:28:03,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:03,825 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, 1, 1, 1, 1] [2020-10-12 18:28:03,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 18:28:03,826 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:03,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:03,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1328588870, now seen corresponding path program 1 times [2020-10-12 18:28:03,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:03,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447594078] [2020-10-12 18:28:03,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:03,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:03,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:03,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:03,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:03,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:04,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:04,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 18:28:04,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:28:04,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1110 [2020-10-12 18:28:04,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:04,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:28:04,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 18:28:04,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:28:04,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:04,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:04,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:04,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:04,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:04,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:04,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:28:04,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:04,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:04,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:04,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:04,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:04,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:04,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:04,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:04,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:04,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:28:04,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:04,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:28:04,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:04,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:28:04,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:04,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:28:04,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:05,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 18:28:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:05,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:05,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:05,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:05,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:28:05,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:05,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 18:28:05,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:05,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:28:05,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:05,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:28:05,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:05,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:28:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:05,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:05,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:05,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 18:28:05,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:05,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 18:28:05,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:05,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:28:05,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:05,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:28:05,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:05,059 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 18:28:05,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447594078] [2020-10-12 18:28:05,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:05,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 18:28:05,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122764532] [2020-10-12 18:28:05,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 18:28:05,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:05,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 18:28:05,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:28:05,066 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand 5 states. [2020-10-12 18:28:05,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:05,194 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2020-10-12 18:28:05,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 18:28:05,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-12 18:28:05,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:05,195 INFO L225 Difference]: With dead ends: 66 [2020-10-12 18:28:05,196 INFO L226 Difference]: Without dead ends: 36 [2020-10-12 18:28:05,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:28:05,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-12 18:28:05,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-10-12 18:28:05,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-12 18:28:05,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-10-12 18:28:05,212 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 36 [2020-10-12 18:28:05,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:05,213 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-10-12 18:28:05,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 18:28:05,213 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-10-12 18:28:05,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 18:28:05,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:05,219 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 18:28:05,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 18:28:05,219 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:05,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:05,220 INFO L82 PathProgramCache]: Analyzing trace with hash 981704641, now seen corresponding path program 2 times [2020-10-12 18:28:05,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:05,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71155993] [2020-10-12 18:28:05,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:05,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:05,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:05,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:05,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:05,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:07,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:08,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:10,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:10,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 18:28:10,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 18:28:10,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 18:28:10,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:10,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:28:10,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:28:10,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:28:10,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:10,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:10,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:10,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:10,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:10,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:10,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:28:10,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:10,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:10,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:10,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:10,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:28:10,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:10,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:10,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:10,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:10,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:28:10,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:10,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-12 18:28:10,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:10,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:28:10,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:10,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:28:10,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:28:10,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 18:28:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:10,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:10,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:10,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:10,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:28:10,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:10,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-12 18:28:10,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:10,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:28:10,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:10,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 18:28:10,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:10,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 18:28:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:10,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:10,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:10,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:10,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:28:10,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:10,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 18:28:10,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:10,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:28:10,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:10,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:28:10,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:10,964 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 72 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 18:28:10,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71155993] [2020-10-12 18:28:10,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:10,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 18:28:10,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120616532] [2020-10-12 18:28:10,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 18:28:10,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:10,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 18:28:10,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:28:10,968 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 14 states. [2020-10-12 18:28:11,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:11,858 INFO L93 Difference]: Finished difference Result 112 states and 146 transitions. [2020-10-12 18:28:11,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 18:28:11,858 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 56 [2020-10-12 18:28:11,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:11,860 INFO L225 Difference]: With dead ends: 112 [2020-10-12 18:28:11,860 INFO L226 Difference]: Without dead ends: 88 [2020-10-12 18:28:11,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=198, Invalid=614, Unknown=0, NotChecked=0, Total=812 [2020-10-12 18:28:11,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-12 18:28:11,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 72. [2020-10-12 18:28:11,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-12 18:28:11,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2020-10-12 18:28:11,875 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 56 [2020-10-12 18:28:11,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:11,876 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2020-10-12 18:28:11,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 18:28:11,876 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2020-10-12 18:28:11,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 18:28:11,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:11,878 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:11,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 18:28:11,879 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:11,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:11,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1260494052, now seen corresponding path program 1 times [2020-10-12 18:28:11,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:11,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447127127] [2020-10-12 18:28:11,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:11,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:11,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:11,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:11,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:14,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:14,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:16,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:16,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 18:28:16,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:28:16,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 18:28:16,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:16,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:28:16,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-12 18:28:16,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:28:16,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:16,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:16,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:16,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:16,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:16,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:16,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:28:16,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:16,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:16,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:16,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:16,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:16,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:16,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:16,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:16,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:16,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:28:16,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:16,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 18:28:16,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:16,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:28:16,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:16,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:28:16,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:28:17,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 18:28:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:17,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:17,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:17,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:17,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:28:17,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:17,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 18:28:17,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:17,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:28:17,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:17,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:28:17,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:17,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 18:28:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:17,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:17,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:17,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:17,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:28:17,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:17,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-12 18:28:17,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:17,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:28:17,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:17,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 18:28:17,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:28:17,473 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 29 proven. 138 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-12 18:28:17,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447127127] [2020-10-12 18:28:17,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:17,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 18:28:17,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526652] [2020-10-12 18:28:17,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 18:28:17,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:17,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 18:28:17,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2020-10-12 18:28:17,479 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand 18 states. [2020-10-12 18:28:18,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:18,652 INFO L93 Difference]: Finished difference Result 203 states and 290 transitions. [2020-10-12 18:28:18,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 18:28:18,653 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 68 [2020-10-12 18:28:18,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:18,657 INFO L225 Difference]: With dead ends: 203 [2020-10-12 18:28:18,657 INFO L226 Difference]: Without dead ends: 140 [2020-10-12 18:28:18,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=409, Invalid=1313, Unknown=0, NotChecked=0, Total=1722 [2020-10-12 18:28:18,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-12 18:28:18,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 124. [2020-10-12 18:28:18,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-12 18:28:18,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 165 transitions. [2020-10-12 18:28:18,686 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 165 transitions. Word has length 68 [2020-10-12 18:28:18,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:18,687 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 165 transitions. [2020-10-12 18:28:18,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 18:28:18,687 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 165 transitions. [2020-10-12 18:28:18,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 18:28:18,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:18,690 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 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, 1, 1, 1] [2020-10-12 18:28:18,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 18:28:18,691 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:18,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:18,691 INFO L82 PathProgramCache]: Analyzing trace with hash 587346034, now seen corresponding path program 1 times [2020-10-12 18:28:18,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:18,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263832206] [2020-10-12 18:28:18,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:18,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:18,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:18,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:18,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:19,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:20,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:20,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:21,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:21,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:22,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:23,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:23,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 18:28:23,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 18:28:23,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 18:28:23,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:23,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-12 18:28:23,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:28:23,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 18:28:23,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:24,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:24,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:24,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:24,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:24,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:24,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:24,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:24,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:24,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:24,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:24,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 18:28:24,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:24,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:24,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:24,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:24,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:28:24,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:24,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-12 18:28:24,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:24,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:28:24,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:24,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:28:24,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:25,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 18:28:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:25,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:25,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:25,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:25,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:25,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:28:25,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:28:25,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-12 18:28:25,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:25,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:28:25,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:25,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:28:25,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:26,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 18:28:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:26,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:26,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:26,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:26,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:28:26,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:26,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-12 18:28:26,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:26,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:28:26,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:26,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 18:28:26,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:27,288 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 5 proven. 449 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-12 18:28:27,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263832206] [2020-10-12 18:28:27,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:27,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-12 18:28:27,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382244275] [2020-10-12 18:28:27,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-12 18:28:27,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:27,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-12 18:28:27,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1521, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 18:28:27,292 INFO L87 Difference]: Start difference. First operand 124 states and 165 transitions. Second operand 41 states. [2020-10-12 18:28:28,621 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2020-10-12 18:28:28,959 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2020-10-12 18:28:29,492 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-10-12 18:28:29,655 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2020-10-12 18:28:29,899 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2020-10-12 18:28:30,144 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2020-10-12 18:28:30,490 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2020-10-12 18:28:30,653 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-10-12 18:28:30,847 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 49 [2020-10-12 18:28:31,139 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-12 18:28:31,408 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2020-10-12 18:28:31,585 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2020-10-12 18:28:31,916 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2020-10-12 18:28:32,285 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2020-10-12 18:28:32,800 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2020-10-12 18:28:33,065 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2020-10-12 18:28:33,230 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-12 18:28:33,723 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 52 [2020-10-12 18:28:33,922 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 53 [2020-10-12 18:28:34,181 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-12 18:28:35,187 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2020-10-12 18:28:35,542 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2020-10-12 18:28:35,758 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 57 [2020-10-12 18:28:35,967 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2020-10-12 18:28:36,349 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-12 18:28:36,583 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-12 18:28:36,809 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-10-12 18:28:37,070 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2020-10-12 18:28:37,565 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-10-12 18:28:37,875 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-10-12 18:28:38,328 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2020-10-12 18:28:38,636 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2020-10-12 18:28:38,954 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-12 18:28:39,286 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-10-12 18:28:41,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:41,049 INFO L93 Difference]: Finished difference Result 314 states and 495 transitions. [2020-10-12 18:28:41,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-10-12 18:28:41,050 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 94 [2020-10-12 18:28:41,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:41,055 INFO L225 Difference]: With dead ends: 314 [2020-10-12 18:28:41,055 INFO L226 Difference]: Without dead ends: 303 [2020-10-12 18:28:41,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3810 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=1361, Invalid=12211, Unknown=0, NotChecked=0, Total=13572 [2020-10-12 18:28:41,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-12 18:28:41,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 135. [2020-10-12 18:28:41,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-12 18:28:41,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 175 transitions. [2020-10-12 18:28:41,128 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 175 transitions. Word has length 94 [2020-10-12 18:28:41,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:41,128 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 175 transitions. [2020-10-12 18:28:41,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-12 18:28:41,129 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 175 transitions. [2020-10-12 18:28:41,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 18:28:41,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:41,131 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 13, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:41,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 18:28:41,131 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:41,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:41,131 INFO L82 PathProgramCache]: Analyzing trace with hash 806200752, now seen corresponding path program 2 times [2020-10-12 18:28:41,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:41,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726028934] [2020-10-12 18:28:41,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:41,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:41,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:41,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:41,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:46,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:46,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 18:28:46,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:28:46,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 18:28:46,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:46,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:28:46,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-12 18:28:46,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:28:46,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:46,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:46,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:46,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:46,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:46,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:46,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:46,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:46,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:46,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:46,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:46,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:46,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:46,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:46,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:46,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:46,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:28:46,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:46,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 18:28:46,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:46,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:28:46,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:46,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:28:46,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:46,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 18:28:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:46,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:46,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:46,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:28:46,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:46,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 18:28:46,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:46,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:28:46,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:46,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:28:46,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:46,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 18:28:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:46,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:46,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:46,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:46,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:28:46,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:46,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 18:28:46,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:46,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:28:46,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:46,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:28:46,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:46,356 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 135 proven. 270 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-12 18:28:46,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726028934] [2020-10-12 18:28:46,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:46,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 18:28:46,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233592771] [2020-10-12 18:28:46,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:28:46,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:46,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:28:46,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:28:46,358 INFO L87 Difference]: Start difference. First operand 135 states and 175 transitions. Second operand 9 states. [2020-10-12 18:28:46,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:46,609 INFO L93 Difference]: Finished difference Result 282 states and 373 transitions. [2020-10-12 18:28:46,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 18:28:46,610 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-10-12 18:28:46,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:46,612 INFO L225 Difference]: With dead ends: 282 [2020-10-12 18:28:46,612 INFO L226 Difference]: Without dead ends: 156 [2020-10-12 18:28:46,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:28:46,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-12 18:28:46,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 142. [2020-10-12 18:28:46,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-12 18:28:46,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 182 transitions. [2020-10-12 18:28:46,634 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 182 transitions. Word has length 94 [2020-10-12 18:28:46,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:46,634 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 182 transitions. [2020-10-12 18:28:46,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:28:46,635 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 182 transitions. [2020-10-12 18:28:46,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 18:28:46,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:46,637 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:46,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 18:28:46,637 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:46,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:46,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1986084589, now seen corresponding path program 2 times [2020-10-12 18:28:46,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:46,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074261894] [2020-10-12 18:28:46,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:46,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:46,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:46,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:46,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:51,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:51,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:51,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 18:28:51,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:28:51,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 18:28:51,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:51,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:28:51,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-12 18:28:51,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:28:51,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:28:51,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:51,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:51,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:51,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:51,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:51,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:28:51,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:51,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:51,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:51,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:51,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:28:51,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:51,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:51,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:51,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:51,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:28:51,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:51,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-12 18:28:51,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:51,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:28:51,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:51,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:28:51,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:28:51,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:28:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:51,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:51,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:51,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:28:51,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:51,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 18:28:51,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:51,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:28:51,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:51,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:28:51,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:51,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 18:28:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:51,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:51,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:52,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:52,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:28:52,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:52,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 18:28:52,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:52,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:28:52,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:52,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:28:52,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:52,040 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 198 proven. 396 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-12 18:28:52,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074261894] [2020-10-12 18:28:52,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:52,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 18:28:52,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358520178] [2020-10-12 18:28:52,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 18:28:52,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:52,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 18:28:52,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:28:52,042 INFO L87 Difference]: Start difference. First operand 142 states and 182 transitions. Second operand 10 states. [2020-10-12 18:28:52,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:52,330 INFO L93 Difference]: Finished difference Result 308 states and 412 transitions. [2020-10-12 18:28:52,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 18:28:52,331 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2020-10-12 18:28:52,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:52,332 INFO L225 Difference]: With dead ends: 308 [2020-10-12 18:28:52,333 INFO L226 Difference]: Without dead ends: 175 [2020-10-12 18:28:52,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-12 18:28:52,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-12 18:28:52,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 158. [2020-10-12 18:28:52,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-12 18:28:52,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 202 transitions. [2020-10-12 18:28:52,354 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 202 transitions. Word has length 104 [2020-10-12 18:28:52,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:52,354 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 202 transitions. [2020-10-12 18:28:52,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 18:28:52,355 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 202 transitions. [2020-10-12 18:28:52,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 18:28:52,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:52,357 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 19, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:52,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 18:28:52,357 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:52,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:52,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1470577800, now seen corresponding path program 3 times [2020-10-12 18:28:52,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:52,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287636722] [2020-10-12 18:28:52,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:52,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:52,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:52,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:52,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:57,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:57,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:57,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 18:28:57,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:28:57,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 18:28:57,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:57,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:28:57,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:28:57,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 18:28:57,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:57,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:57,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:57,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:57,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:57,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:57,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:28:57,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:57,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:57,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:57,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:57,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:57,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:57,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:57,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:57,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 18:28:57,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:57,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 18:28:57,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:57,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:28:57,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:57,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 18:28:57,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:57,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 18:28:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:57,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:57,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:57,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:57,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 18:28:57,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:57,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-12 18:28:57,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:57,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:28:57,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:57,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 18:28:57,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:57,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 18:28:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:57,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:57,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:57,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:57,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 18:28:57,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:57,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 18:28:57,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:57,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:28:57,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:57,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 18:28:57,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:57,687 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 273 proven. 546 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-12 18:28:57,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287636722] [2020-10-12 18:28:57,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:57,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 18:28:57,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400667088] [2020-10-12 18:28:57,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:28:57,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:57,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:28:57,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:28:57,690 INFO L87 Difference]: Start difference. First operand 158 states and 202 transitions. Second operand 11 states. [2020-10-12 18:28:57,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:57,998 INFO L93 Difference]: Finished difference Result 340 states and 452 transitions. [2020-10-12 18:28:58,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 18:28:58,002 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 116 [2020-10-12 18:28:58,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:58,004 INFO L225 Difference]: With dead ends: 340 [2020-10-12 18:28:58,005 INFO L226 Difference]: Without dead ends: 191 [2020-10-12 18:28:58,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:28:58,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-12 18:28:58,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 174. [2020-10-12 18:28:58,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-12 18:28:58,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 222 transitions. [2020-10-12 18:28:58,040 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 222 transitions. Word has length 116 [2020-10-12 18:28:58,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:58,042 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 222 transitions. [2020-10-12 18:28:58,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:28:58,043 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 222 transitions. [2020-10-12 18:28:58,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 18:28:58,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:58,049 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 22, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:58,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 18:28:58,049 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:58,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:58,050 INFO L82 PathProgramCache]: Analyzing trace with hash 800369059, now seen corresponding path program 4 times [2020-10-12 18:28:58,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:58,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762736047] [2020-10-12 18:28:58,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:58,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:58,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:58,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:58,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:03,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:03,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 18:29:03,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:29:03,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 18:29:03,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:03,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:29:03,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:29:03,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 18:29:03,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:03,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:03,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:03,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:03,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:03,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:03,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:29:03,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:03,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:03,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:03,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:03,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:03,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:03,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:03,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:03,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 18:29:03,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:03,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 18:29:03,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:03,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:29:03,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:03,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 18:29:03,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:03,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 18:29:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:03,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:03,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:03,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:03,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 18:29:03,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:03,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-12 18:29:03,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:03,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:29:03,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:03,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 18:29:03,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:03,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 18:29:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:03,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:03,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:03,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:03,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 18:29:03,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:03,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 18:29:03,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:03,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:29:03,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:03,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 18:29:03,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:03,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 360 proven. 720 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-12 18:29:03,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762736047] [2020-10-12 18:29:03,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:03,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 18:29:03,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977809943] [2020-10-12 18:29:03,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 18:29:03,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:03,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 18:29:03,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 18:29:03,432 INFO L87 Difference]: Start difference. First operand 174 states and 222 transitions. Second operand 12 states. [2020-10-12 18:29:03,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:03,881 INFO L93 Difference]: Finished difference Result 372 states and 492 transitions. [2020-10-12 18:29:03,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:29:03,882 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-10-12 18:29:03,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:03,885 INFO L225 Difference]: With dead ends: 372 [2020-10-12 18:29:03,885 INFO L226 Difference]: Without dead ends: 207 [2020-10-12 18:29:03,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:29:03,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-12 18:29:03,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 190. [2020-10-12 18:29:03,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-12 18:29:03,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 242 transitions. [2020-10-12 18:29:03,915 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 242 transitions. Word has length 128 [2020-10-12 18:29:03,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:03,915 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 242 transitions. [2020-10-12 18:29:03,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 18:29:03,916 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 242 transitions. [2020-10-12 18:29:03,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-12 18:29:03,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:03,920 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 25, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:03,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 18:29:03,921 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:03,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:03,921 INFO L82 PathProgramCache]: Analyzing trace with hash 617170494, now seen corresponding path program 5 times [2020-10-12 18:29:03,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:03,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697026421] [2020-10-12 18:29:03,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:03,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:03,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:03,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:04,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:08,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:08,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 18:29:08,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:29:08,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 18:29:08,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:08,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:29:08,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:29:08,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:29:08,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:08,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:08,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:08,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:08,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:08,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:08,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:29:08,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:08,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:08,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:08,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:08,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:08,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:08,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:09,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:09,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:29:09,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:09,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-12 18:29:09,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:09,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:29:09,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:09,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:29:09,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:29:09,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 18:29:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:09,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:09,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:09,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:09,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:29:09,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:09,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-12 18:29:09,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:29:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:29:09,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:09,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 18:29:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:09,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:09,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:09,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:09,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:29:09,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:09,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-12 18:29:09,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:09,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:29:09,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:09,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:29:09,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:29:09,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 459 proven. 918 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-12 18:29:09,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697026421] [2020-10-12 18:29:09,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:09,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 18:29:09,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720742701] [2020-10-12 18:29:09,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:29:09,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:09,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:29:09,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:29:09,793 INFO L87 Difference]: Start difference. First operand 190 states and 242 transitions. Second operand 13 states. [2020-10-12 18:29:10,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:10,211 INFO L93 Difference]: Finished difference Result 404 states and 532 transitions. [2020-10-12 18:29:10,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 18:29:10,212 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 140 [2020-10-12 18:29:10,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:10,215 INFO L225 Difference]: With dead ends: 404 [2020-10-12 18:29:10,215 INFO L226 Difference]: Without dead ends: 223 [2020-10-12 18:29:10,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-12 18:29:10,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-12 18:29:10,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 206. [2020-10-12 18:29:10,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-12 18:29:10,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 262 transitions. [2020-10-12 18:29:10,236 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 262 transitions. Word has length 140 [2020-10-12 18:29:10,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:10,238 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 262 transitions. [2020-10-12 18:29:10,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:29:10,238 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 262 transitions. [2020-10-12 18:29:10,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-12 18:29:10,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:10,241 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 28, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:10,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 18:29:10,242 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:10,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:10,242 INFO L82 PathProgramCache]: Analyzing trace with hash -217787815, now seen corresponding path program 6 times [2020-10-12 18:29:10,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:10,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891716115] [2020-10-12 18:29:10,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:10,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:10,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:10,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:10,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:15,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:15,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 18:29:15,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:29:15,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 18:29:15,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:15,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:29:15,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:29:15,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 18:29:15,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:15,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:15,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:15,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:15,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:15,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:15,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:29:15,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:15,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:15,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:15,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:15,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:15,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:15,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:15,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:15,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:15,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:15,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-12 18:29:15,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:15,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:29:15,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:15,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 18:29:15,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:15,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:29:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:15,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:15,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:15,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:15,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:15,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:15,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-12 18:29:15,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:15,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:29:15,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:15,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 18:29:15,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:15,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 18:29:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:15,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:15,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:15,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:15,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:15,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:15,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-12 18:29:15,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:15,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:29:15,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:15,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 18:29:15,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:15,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1845 backedges. 570 proven. 1140 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-12 18:29:15,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891716115] [2020-10-12 18:29:15,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:15,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 18:29:15,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121869769] [2020-10-12 18:29:15,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 18:29:15,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:15,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 18:29:15,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:29:15,928 INFO L87 Difference]: Start difference. First operand 206 states and 262 transitions. Second operand 14 states. [2020-10-12 18:29:16,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:16,383 INFO L93 Difference]: Finished difference Result 436 states and 572 transitions. [2020-10-12 18:29:16,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 18:29:16,386 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 152 [2020-10-12 18:29:16,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:16,389 INFO L225 Difference]: With dead ends: 436 [2020-10-12 18:29:16,389 INFO L226 Difference]: Without dead ends: 239 [2020-10-12 18:29:16,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-12 18:29:16,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-10-12 18:29:16,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 222. [2020-10-12 18:29:16,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-12 18:29:16,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 282 transitions. [2020-10-12 18:29:16,420 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 282 transitions. Word has length 152 [2020-10-12 18:29:16,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:16,420 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 282 transitions. [2020-10-12 18:29:16,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 18:29:16,421 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 282 transitions. [2020-10-12 18:29:16,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 18:29:16,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:16,424 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 31, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:16,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 18:29:16,424 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:16,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:16,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1550257652, now seen corresponding path program 7 times [2020-10-12 18:29:16,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:16,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196975961] [2020-10-12 18:29:16,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:16,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:16,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:16,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:16,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:21,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:21,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 18:29:21,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:29:21,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 18:29:21,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:21,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:29:21,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-12 18:29:21,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 18:29:21,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:21,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:21,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:21,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:21,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:21,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:21,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:29:21,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:21,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:21,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:21,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:21,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:21,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:21,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:21,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:21,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:21,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 18:29:21,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:21,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-12 18:29:21,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:21,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:29:21,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:21,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 18:29:21,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:21,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 18:29:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:21,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:21,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:21,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 18:29:21,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:21,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-12 18:29:21,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:21,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:29:21,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:21,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 18:29:21,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:29:22,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-12 18:29:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:22,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:22,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:22,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:22,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 18:29:22,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:22,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-12 18:29:22,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:22,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:29:22,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:22,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 18:29:22,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:22,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2226 backedges. 693 proven. 1386 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-12 18:29:22,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196975961] [2020-10-12 18:29:22,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:22,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 18:29:22,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483668071] [2020-10-12 18:29:22,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 18:29:22,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:22,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 18:29:22,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:29:22,213 INFO L87 Difference]: Start difference. First operand 222 states and 282 transitions. Second operand 15 states. [2020-10-12 18:29:22,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:22,690 INFO L93 Difference]: Finished difference Result 468 states and 612 transitions. [2020-10-12 18:29:22,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 18:29:22,691 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 164 [2020-10-12 18:29:22,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:22,693 INFO L225 Difference]: With dead ends: 468 [2020-10-12 18:29:22,693 INFO L226 Difference]: Without dead ends: 255 [2020-10-12 18:29:22,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-12 18:29:22,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-12 18:29:22,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 238. [2020-10-12 18:29:22,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-12 18:29:22,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 302 transitions. [2020-10-12 18:29:22,719 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 302 transitions. Word has length 164 [2020-10-12 18:29:22,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:22,719 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 302 transitions. [2020-10-12 18:29:22,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 18:29:22,719 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 302 transitions. [2020-10-12 18:29:22,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-12 18:29:22,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:22,723 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 34, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:22,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 18:29:22,724 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:22,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:22,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1731217137, now seen corresponding path program 8 times [2020-10-12 18:29:22,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:22,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206635238] [2020-10-12 18:29:22,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:22,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:22,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:22,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:22,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:27,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:27,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-12 18:29:27,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:29:27,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 18:29:27,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:27,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:29:27,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:29:27,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:29:27,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:27,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:27,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:27,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:27,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:27,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:27,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:29:27,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:27,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:27,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:27,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:27,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:27,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:27,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:27,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:27,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 18:29:27,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:27,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-12 18:29:27,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:27,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:29:27,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:27,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:29:27,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:28,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 18:29:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:28,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:28,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:28,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:28,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 18:29:28,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:28,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-12 18:29:28,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:28,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:29:28,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:28,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:29:28,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:28,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-12 18:29:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:28,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:28,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:28,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:28,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 18:29:28,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:28,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-12 18:29:28,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:28,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:29:28,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:28,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:29:28,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:28,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2643 backedges. 828 proven. 1656 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-12 18:29:28,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206635238] [2020-10-12 18:29:28,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:28,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 18:29:28,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054426877] [2020-10-12 18:29:28,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 18:29:28,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:28,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 18:29:28,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-12 18:29:28,380 INFO L87 Difference]: Start difference. First operand 238 states and 302 transitions. Second operand 16 states. [2020-10-12 18:29:28,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:28,874 INFO L93 Difference]: Finished difference Result 500 states and 652 transitions. [2020-10-12 18:29:28,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 18:29:28,875 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 176 [2020-10-12 18:29:28,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:28,877 INFO L225 Difference]: With dead ends: 500 [2020-10-12 18:29:28,877 INFO L226 Difference]: Without dead ends: 271 [2020-10-12 18:29:28,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-12 18:29:28,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-12 18:29:28,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 254. [2020-10-12 18:29:28,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-12 18:29:28,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 322 transitions. [2020-10-12 18:29:28,906 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 322 transitions. Word has length 176 [2020-10-12 18:29:28,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:28,907 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 322 transitions. [2020-10-12 18:29:28,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 18:29:28,907 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 322 transitions. [2020-10-12 18:29:28,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-12 18:29:28,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:28,910 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 37, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:28,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 18:29:28,911 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:28,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:28,911 INFO L82 PathProgramCache]: Analyzing trace with hash -973171798, now seen corresponding path program 9 times [2020-10-12 18:29:28,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:28,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146529762] [2020-10-12 18:29:28,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:28,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:28,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:28,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:28,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:33,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:33,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-12 18:29:33,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:29:33,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 18:29:33,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:33,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:29:33,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-12 18:29:33,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 18:29:33,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:33,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:33,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:33,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:33,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:33,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:33,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:29:33,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:33,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:33,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:33,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:33,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:33,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:33,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:33,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:34,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:34,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 18:29:34,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:34,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-12 18:29:34,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:34,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:29:34,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:34,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 18:29:34,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:34,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 18:29:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:34,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:34,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:34,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 18:29:34,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:34,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-12 18:29:34,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:34,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:29:34,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:34,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 18:29:34,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:34,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-12 18:29:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:34,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:34,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:34,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:34,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 18:29:34,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:34,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-12 18:29:34,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:34,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:29:34,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:34,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 18:29:34,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:34,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3096 backedges. 975 proven. 1950 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-12 18:29:34,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146529762] [2020-10-12 18:29:34,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:34,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 18:29:34,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098610920] [2020-10-12 18:29:34,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 18:29:34,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:34,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 18:29:34,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-12 18:29:34,601 INFO L87 Difference]: Start difference. First operand 254 states and 322 transitions. Second operand 17 states. [2020-10-12 18:29:35,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:35,155 INFO L93 Difference]: Finished difference Result 532 states and 692 transitions. [2020-10-12 18:29:35,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 18:29:35,155 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 188 [2020-10-12 18:29:35,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:35,157 INFO L225 Difference]: With dead ends: 532 [2020-10-12 18:29:35,157 INFO L226 Difference]: Without dead ends: 287 [2020-10-12 18:29:35,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-12 18:29:35,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-12 18:29:35,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 270. [2020-10-12 18:29:35,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-12 18:29:35,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 342 transitions. [2020-10-12 18:29:35,179 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 342 transitions. Word has length 188 [2020-10-12 18:29:35,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:35,179 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 342 transitions. [2020-10-12 18:29:35,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 18:29:35,180 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 342 transitions. [2020-10-12 18:29:35,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-12 18:29:35,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:35,186 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 40, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:35,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 18:29:35,186 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:35,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:35,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1469275589, now seen corresponding path program 10 times [2020-10-12 18:29:35,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:35,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348115234] [2020-10-12 18:29:35,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:35,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:35,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:35,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:35,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:40,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:40,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-12 18:29:40,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:29:40,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 18:29:40,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:40,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:29:40,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:29:40,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:29:40,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:40,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:40,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:40,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:40,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:40,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:40,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:29:40,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:40,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:40,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:40,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:40,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:40,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:40,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:40,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:40,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 18:29:40,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:40,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-12 18:29:40,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:40,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:29:40,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:40,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:29:40,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:40,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 18:29:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:40,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:40,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:40,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:40,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 18:29:40,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:40,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-12 18:29:40,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:40,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:29:40,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:40,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:29:40,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:40,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-12 18:29:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:40,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:40,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:41,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:41,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 18:29:41,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:41,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-12 18:29:41,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:41,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:29:41,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:41,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:29:41,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:41,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3585 backedges. 1134 proven. 2268 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-12 18:29:41,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348115234] [2020-10-12 18:29:41,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:41,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 18:29:41,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456123925] [2020-10-12 18:29:41,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 18:29:41,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:41,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 18:29:41,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-12 18:29:41,123 INFO L87 Difference]: Start difference. First operand 270 states and 342 transitions. Second operand 18 states. [2020-10-12 18:29:41,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:41,670 INFO L93 Difference]: Finished difference Result 564 states and 732 transitions. [2020-10-12 18:29:41,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 18:29:41,671 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 200 [2020-10-12 18:29:41,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:41,673 INFO L225 Difference]: With dead ends: 564 [2020-10-12 18:29:41,674 INFO L226 Difference]: Without dead ends: 303 [2020-10-12 18:29:41,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 18:29:41,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-12 18:29:41,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 286. [2020-10-12 18:29:41,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-10-12 18:29:41,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 362 transitions. [2020-10-12 18:29:41,696 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 362 transitions. Word has length 200 [2020-10-12 18:29:41,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:41,697 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 362 transitions. [2020-10-12 18:29:41,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 18:29:41,697 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 362 transitions. [2020-10-12 18:29:41,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-12 18:29:41,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:41,701 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 43, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:41,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 18:29:41,701 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:41,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:41,702 INFO L82 PathProgramCache]: Analyzing trace with hash -2029136032, now seen corresponding path program 11 times [2020-10-12 18:29:41,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:41,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031648966] [2020-10-12 18:29:41,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:41,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:41,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:41,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:41,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:46,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:46,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-12 18:29:46,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:29:46,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 18:29:46,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:46,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:29:46,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 18:29:46,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 18:29:46,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:46,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:46,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:46,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:46,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:46,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:46,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:29:46,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:46,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:46,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:46,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:46,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:46,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:46,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:46,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:46,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:46,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:29:46,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:46,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-12 18:29:46,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:46,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:29:46,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:46,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 18:29:46,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:47,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 18:29:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:47,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:47,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:47,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:29:47,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:47,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-12 18:29:47,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:47,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:29:47,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:47,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 18:29:47,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:47,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-12 18:29:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:47,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:47,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:47,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:47,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:29:47,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:47,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-12 18:29:47,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:47,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:29:47,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:47,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 18:29:47,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:47,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4110 backedges. 1305 proven. 2610 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-12 18:29:47,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031648966] [2020-10-12 18:29:47,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:47,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 18:29:47,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665782855] [2020-10-12 18:29:47,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 18:29:47,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:47,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 18:29:47,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:29:47,613 INFO L87 Difference]: Start difference. First operand 286 states and 362 transitions. Second operand 19 states. [2020-10-12 18:29:48,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:48,250 INFO L93 Difference]: Finished difference Result 596 states and 772 transitions. [2020-10-12 18:29:48,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 18:29:48,251 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 212 [2020-10-12 18:29:48,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:48,256 INFO L225 Difference]: With dead ends: 596 [2020-10-12 18:29:48,256 INFO L226 Difference]: Without dead ends: 319 [2020-10-12 18:29:48,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 18:29:48,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-12 18:29:48,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 302. [2020-10-12 18:29:48,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-10-12 18:29:48,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 382 transitions. [2020-10-12 18:29:48,290 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 382 transitions. Word has length 212 [2020-10-12 18:29:48,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:48,290 INFO L479 AbstractCegarLoop]: Abstraction has 302 states and 382 transitions. [2020-10-12 18:29:48,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 18:29:48,291 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 382 transitions. [2020-10-12 18:29:48,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-12 18:29:48,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:48,296 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 46, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:48,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 18:29:48,296 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:48,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:48,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1009926021, now seen corresponding path program 12 times [2020-10-12 18:29:48,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:48,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806124504] [2020-10-12 18:29:48,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:48,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:48,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:48,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:48,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:53,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:53,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-12 18:29:53,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:29:53,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 18:29:53,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:53,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:29:53,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:29:53,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 18:29:53,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:53,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:53,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:53,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:53,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:53,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:53,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:29:53,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:53,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:53,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:53,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:53,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:53,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:53,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:53,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:53,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 18:29:53,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:53,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-12 18:29:53,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:53,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:29:53,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:53,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 18:29:53,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:53,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 18:29:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:53,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:53,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:54,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:54,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 18:29:54,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:54,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-12 18:29:54,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:54,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:29:54,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:54,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 18:29:54,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:54,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-12 18:29:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:54,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:54,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:54,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:54,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 18:29:54,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:54,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-12 18:29:54,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:54,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:29:54,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:54,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 18:29:54,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:54,341 INFO L134 CoverageAnalysis]: Checked inductivity of 4671 backedges. 1488 proven. 2976 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-10-12 18:29:54,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806124504] [2020-10-12 18:29:54,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:54,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 18:29:54,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457316507] [2020-10-12 18:29:54,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 18:29:54,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:54,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 18:29:54,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-12 18:29:54,344 INFO L87 Difference]: Start difference. First operand 302 states and 382 transitions. Second operand 20 states. [2020-10-12 18:29:55,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:55,018 INFO L93 Difference]: Finished difference Result 628 states and 812 transitions. [2020-10-12 18:29:55,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 18:29:55,019 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 224 [2020-10-12 18:29:55,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:55,022 INFO L225 Difference]: With dead ends: 628 [2020-10-12 18:29:55,022 INFO L226 Difference]: Without dead ends: 335 [2020-10-12 18:29:55,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 18:29:55,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-12 18:29:55,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 318. [2020-10-12 18:29:55,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-10-12 18:29:55,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 402 transitions. [2020-10-12 18:29:55,047 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 402 transitions. Word has length 224 [2020-10-12 18:29:55,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:55,048 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 402 transitions. [2020-10-12 18:29:55,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 18:29:55,048 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 402 transitions. [2020-10-12 18:29:55,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-12 18:29:55,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:55,053 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 49, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:55,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 18:29:55,053 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:55,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:55,054 INFO L82 PathProgramCache]: Analyzing trace with hash 588437782, now seen corresponding path program 13 times [2020-10-12 18:29:55,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:55,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289683934] [2020-10-12 18:29:55,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:55,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:55,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:55,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:55,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:00,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:00,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-12 18:30:00,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:30:00,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 18:30:00,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:00,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:30:00,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:30:00,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 18:30:00,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:00,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:00,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:00,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:00,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:00,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:00,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:30:00,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:00,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:00,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:00,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:00,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:00,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:00,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:00,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:00,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 18:30:00,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:00,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-12 18:30:00,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:00,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:30:00,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:00,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 18:30:00,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:00,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 18:30:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:00,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:00,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:00,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:00,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 18:30:00,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:00,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-12 18:30:00,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:00,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:30:00,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:00,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 18:30:00,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:00,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-12 18:30:00,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:00,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:00,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:01,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:01,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 18:30:01,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:01,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-12 18:30:01,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:01,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:30:01,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:01,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 18:30:01,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:01,203 INFO L134 CoverageAnalysis]: Checked inductivity of 5268 backedges. 1683 proven. 3366 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-12 18:30:01,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289683934] [2020-10-12 18:30:01,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:30:01,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 18:30:01,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695758192] [2020-10-12 18:30:01,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 18:30:01,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:01,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 18:30:01,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:30:01,205 INFO L87 Difference]: Start difference. First operand 318 states and 402 transitions. Second operand 21 states. [2020-10-12 18:30:01,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:01,962 INFO L93 Difference]: Finished difference Result 660 states and 852 transitions. [2020-10-12 18:30:01,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 18:30:01,963 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 236 [2020-10-12 18:30:01,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:01,965 INFO L225 Difference]: With dead ends: 660 [2020-10-12 18:30:01,965 INFO L226 Difference]: Without dead ends: 351 [2020-10-12 18:30:01,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 18:30:01,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-10-12 18:30:01,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 334. [2020-10-12 18:30:01,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-10-12 18:30:01,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 422 transitions. [2020-10-12 18:30:01,989 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 422 transitions. Word has length 236 [2020-10-12 18:30:01,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:01,989 INFO L479 AbstractCegarLoop]: Abstraction has 334 states and 422 transitions. [2020-10-12 18:30:01,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 18:30:01,989 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 422 transitions. [2020-10-12 18:30:01,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-12 18:30:01,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:01,995 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 52, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:01,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 18:30:01,995 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:01,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:01,996 INFO L82 PathProgramCache]: Analyzing trace with hash -805510863, now seen corresponding path program 14 times [2020-10-12 18:30:01,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:01,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669468612] [2020-10-12 18:30:01,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:02,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:02,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:02,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:02,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:07,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:07,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-12 18:30:07,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:30:07,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 18:30:07,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:07,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:30:07,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:30:07,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 18:30:07,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:07,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:07,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:07,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:07,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:07,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:07,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:30:07,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:07,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:07,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:07,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:07,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:07,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:07,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:07,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:07,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 18:30:07,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:07,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-12 18:30:07,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:07,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:30:07,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:07,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 18:30:07,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:07,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-12 18:30:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:07,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:07,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:07,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:07,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 18:30:07,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:07,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-12 18:30:07,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:07,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:30:07,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:07,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 18:30:07,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:07,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-12 18:30:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:07,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:08,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:08,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:08,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 18:30:08,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:08,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-12 18:30:08,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:08,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:30:08,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:08,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 18:30:08,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:08,268 INFO L134 CoverageAnalysis]: Checked inductivity of 5901 backedges. 1890 proven. 3780 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-12 18:30:08,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669468612] [2020-10-12 18:30:08,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:30:08,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 18:30:08,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441979485] [2020-10-12 18:30:08,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 18:30:08,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:08,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 18:30:08,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-12 18:30:08,270 INFO L87 Difference]: Start difference. First operand 334 states and 422 transitions. Second operand 22 states. [2020-10-12 18:30:09,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:09,029 INFO L93 Difference]: Finished difference Result 692 states and 892 transitions. [2020-10-12 18:30:09,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 18:30:09,030 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 248 [2020-10-12 18:30:09,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:09,032 INFO L225 Difference]: With dead ends: 692 [2020-10-12 18:30:09,032 INFO L226 Difference]: Without dead ends: 367 [2020-10-12 18:30:09,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 18:30:09,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-10-12 18:30:09,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 350. [2020-10-12 18:30:09,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-10-12 18:30:09,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 442 transitions. [2020-10-12 18:30:09,058 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 442 transitions. Word has length 248 [2020-10-12 18:30:09,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:09,058 INFO L479 AbstractCegarLoop]: Abstraction has 350 states and 442 transitions. [2020-10-12 18:30:09,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 18:30:09,059 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 442 transitions. [2020-10-12 18:30:09,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-12 18:30:09,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:09,062 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 55, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:09,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 18:30:09,062 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:09,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:09,062 INFO L82 PathProgramCache]: Analyzing trace with hash 2072746188, now seen corresponding path program 15 times [2020-10-12 18:30:09,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:09,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326037244] [2020-10-12 18:30:09,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:09,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:09,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:09,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:09,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:14,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:14,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-12 18:30:14,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:30:14,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 18:30:14,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:14,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:30:14,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-12 18:30:14,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 18:30:14,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:14,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:14,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:14,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:14,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:14,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:14,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:30:14,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:14,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:14,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:14,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:14,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:14,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:14,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:14,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:14,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:14,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 18:30:14,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:14,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-12 18:30:14,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:14,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:30:14,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:14,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 18:30:14,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:14,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 18:30:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:14,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:15,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:15,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 18:30:15,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:15,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-12 18:30:15,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:15,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:30:15,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:15,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 18:30:15,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:15,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-12 18:30:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:15,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:15,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:15,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:15,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 18:30:15,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:15,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-12 18:30:15,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:30:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 18:30:15,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:15,445 INFO L134 CoverageAnalysis]: Checked inductivity of 6570 backedges. 2109 proven. 4218 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-10-12 18:30:15,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326037244] [2020-10-12 18:30:15,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:30:15,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 18:30:15,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629974767] [2020-10-12 18:30:15,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 18:30:15,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:15,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 18:30:15,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-12 18:30:15,447 INFO L87 Difference]: Start difference. First operand 350 states and 442 transitions. Second operand 23 states. [2020-10-12 18:30:16,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:16,189 INFO L93 Difference]: Finished difference Result 724 states and 932 transitions. [2020-10-12 18:30:16,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 18:30:16,189 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 260 [2020-10-12 18:30:16,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:16,193 INFO L225 Difference]: With dead ends: 724 [2020-10-12 18:30:16,193 INFO L226 Difference]: Without dead ends: 383 [2020-10-12 18:30:16,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-12 18:30:16,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-10-12 18:30:16,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 366. [2020-10-12 18:30:16,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-10-12 18:30:16,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 462 transitions. [2020-10-12 18:30:16,219 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 462 transitions. Word has length 260 [2020-10-12 18:30:16,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:16,220 INFO L479 AbstractCegarLoop]: Abstraction has 366 states and 462 transitions. [2020-10-12 18:30:16,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 18:30:16,220 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 462 transitions. [2020-10-12 18:30:16,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-12 18:30:16,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:16,223 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 58, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:16,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 18:30:16,224 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:16,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:16,224 INFO L82 PathProgramCache]: Analyzing trace with hash -862011417, now seen corresponding path program 16 times [2020-10-12 18:30:16,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:16,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140684513] [2020-10-12 18:30:16,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:16,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:16,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:16,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:16,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:21,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:21,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-12 18:30:21,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:30:21,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 18:30:21,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:21,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:30:21,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-12 18:30:21,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 18:30:21,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:21,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:21,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:21,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:21,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:21,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:21,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:30:21,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:21,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:21,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:21,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:21,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:21,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:21,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:21,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:21,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:21,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 18:30:21,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:21,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-12 18:30:21,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:21,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:30:21,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:21,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 18:30:21,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:22,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-12 18:30:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:22,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:22,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:22,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 18:30:22,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:22,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-12 18:30:22,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:22,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:30:22,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:22,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 18:30:22,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:22,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-12 18:30:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:22,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:22,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:22,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:22,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 18:30:22,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:22,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-12 18:30:22,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:22,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:30:22,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:22,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 18:30:22,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:22,856 INFO L134 CoverageAnalysis]: Checked inductivity of 7275 backedges. 2340 proven. 4680 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2020-10-12 18:30:22,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140684513] [2020-10-12 18:30:22,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:30:22,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 18:30:22,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694837927] [2020-10-12 18:30:22,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 18:30:22,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:22,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 18:30:22,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-12 18:30:22,858 INFO L87 Difference]: Start difference. First operand 366 states and 462 transitions. Second operand 24 states. [2020-10-12 18:30:23,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:23,699 INFO L93 Difference]: Finished difference Result 756 states and 972 transitions. [2020-10-12 18:30:23,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 18:30:23,700 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 272 [2020-10-12 18:30:23,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:23,702 INFO L225 Difference]: With dead ends: 756 [2020-10-12 18:30:23,702 INFO L226 Difference]: Without dead ends: 399 [2020-10-12 18:30:23,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-12 18:30:23,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-10-12 18:30:23,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 382. [2020-10-12 18:30:23,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-10-12 18:30:23,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 482 transitions. [2020-10-12 18:30:23,729 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 482 transitions. Word has length 272 [2020-10-12 18:30:23,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:23,730 INFO L479 AbstractCegarLoop]: Abstraction has 382 states and 482 transitions. [2020-10-12 18:30:23,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 18:30:23,730 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 482 transitions. [2020-10-12 18:30:23,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-12 18:30:23,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:23,733 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 63, 61, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:23,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 18:30:23,734 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:23,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:23,734 INFO L82 PathProgramCache]: Analyzing trace with hash -805955966, now seen corresponding path program 17 times [2020-10-12 18:30:23,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:23,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798965693] [2020-10-12 18:30:23,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:23,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:23,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:23,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:23,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:28,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:28,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-12 18:30:28,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:30:28,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 18:30:28,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:28,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 18:30:28,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-12 18:30:28,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 18:30:28,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:28,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:28,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:28,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:28,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:28,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:28,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:30:28,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:28,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:28,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:28,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:28,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:28,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:28,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:28,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:29,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:29,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 18:30:29,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:29,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-12 18:30:29,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:29,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 18:30:29,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:29,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 18:30:29,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:29,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-12 18:30:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:29,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:30,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:30,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 18:30:30,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:30,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-12 18:30:30,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:30,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 18:30:30,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:30,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 18:30:30,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:30,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-12 18:30:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:30,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:30,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:30,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:30,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 18:30:30,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:30,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-12 18:30:30,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:30,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 18:30:30,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:30,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 18:30:30,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:30,493 INFO L134 CoverageAnalysis]: Checked inductivity of 8016 backedges. 2583 proven. 5166 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-10-12 18:30:30,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798965693] [2020-10-12 18:30:30,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:30:30,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 18:30:30,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033984386] [2020-10-12 18:30:30,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 18:30:30,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:30,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 18:30:30,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-12 18:30:30,495 INFO L87 Difference]: Start difference. First operand 382 states and 482 transitions. Second operand 25 states. [2020-10-12 18:30:31,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:31,637 INFO L93 Difference]: Finished difference Result 788 states and 1012 transitions. [2020-10-12 18:30:31,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 18:30:31,638 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 284 [2020-10-12 18:30:31,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:31,641 INFO L225 Difference]: With dead ends: 788 [2020-10-12 18:30:31,641 INFO L226 Difference]: Without dead ends: 415 [2020-10-12 18:30:31,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-12 18:30:31,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-10-12 18:30:31,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 398. [2020-10-12 18:30:31,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-10-12 18:30:31,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 502 transitions. [2020-10-12 18:30:31,669 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 502 transitions. Word has length 284 [2020-10-12 18:30:31,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:31,670 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 502 transitions. [2020-10-12 18:30:31,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 18:30:31,670 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 502 transitions. [2020-10-12 18:30:31,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-12 18:30:31,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:31,673 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 66, 64, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:31,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 18:30:31,674 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:31,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:31,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1748065437, now seen corresponding path program 18 times [2020-10-12 18:30:31,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:31,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774484043] [2020-10-12 18:30:31,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:31,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:31,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:31,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:31,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:32,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:36,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:36,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-12 18:30:36,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:30:36,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 18:30:36,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:36,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 106 [2020-10-12 18:30:36,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:30:36,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-12 18:30:36,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:36,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:36,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:36,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:36,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:36,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:36,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:30:36,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:36,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:36,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:36,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:36,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:36,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:36,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:37,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:39,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:39,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 18:30:39,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:39,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3150 [2020-10-12 18:30:39,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:39,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 77 [2020-10-12 18:30:39,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:39,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 18:30:39,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:46,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-12 18:30:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:46,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:46,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:47,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:47,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 18:30:47,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:47,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1143 [2020-10-12 18:30:47,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:47,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:30:47,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:47,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 18:30:47,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:51,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-12 18:30:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:51,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:51,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:52,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:52,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 18:30:52,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:52,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 478 [2020-10-12 18:30:52,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:52,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 18:30:52,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:52,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 18:30:52,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:56,132 INFO L134 CoverageAnalysis]: Checked inductivity of 8793 backedges. 95 proven. 8683 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 18:30:56,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774484043] [2020-10-12 18:30:56,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:30:56,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [130] total 130 [2020-10-12 18:30:56,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828237436] [2020-10-12 18:30:56,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 130 states [2020-10-12 18:30:56,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:56,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2020-10-12 18:30:56,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1788, Invalid=14982, Unknown=0, NotChecked=0, Total=16770 [2020-10-12 18:30:56,139 INFO L87 Difference]: Start difference. First operand 398 states and 502 transitions. Second operand 130 states. [2020-10-12 18:31:01,749 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-10-12 18:31:04,377 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-12 18:31:07,341 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-10-12 18:31:09,868 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-12 18:31:10,804 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-10-12 18:31:13,787 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-12 18:31:14,904 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-10-12 18:31:18,310 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-12 18:31:19,537 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2020-10-12 18:31:23,472 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-12 18:31:24,853 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-10-12 18:31:29,321 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-12 18:31:30,848 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-10-12 18:31:35,896 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-12 18:31:37,640 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 80 [2020-10-12 18:31:43,442 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2020-10-12 18:31:45,532 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 84 [2020-10-12 18:31:46,928 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-12 18:31:50,738 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-12 18:31:52,081 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2020-10-12 18:31:54,549 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 88 [2020-10-12 18:31:56,260 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 84